JP2011229426A - PRODUCTION OF PDC USING FERULOYL-CoA SYNTHETASE GENE AND FERULOYL-CoA HYDRATASE/LYASE GENE - Google Patents
PRODUCTION OF PDC USING FERULOYL-CoA SYNTHETASE GENE AND FERULOYL-CoA HYDRATASE/LYASE GENE Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Enzymes And Modification Thereof (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
Description
本発明は、リグニンの低分子分解物であるシナピン酸、フェルラ酸、p−クマル酸といったC6C3化合物から、2−ピロン−4,6−ジカルボン酸を発酵生産するための組換えベクター、形質転換体、及びそれを用いる2−ピロン−4,6−ジカルボン酸(以下、「PDC」と略す場合がある)の工業的製造法に関する。 The present invention relates to a recombinant vector and a transformant for producing 2-pyrone-4,6-dicarboxylic acid by fermentation from a C6C3 compound such as sinapinic acid, ferulic acid, and p-coumaric acid, which are low molecular weight degradation products of lignin. , And 2-pyrone-4,6-dicarboxylic acid (hereinafter sometimes abbreviated as “PDC”) using the same.
植物主要成分であるリグニンは、芳香族高分子化合物として植物細胞壁に普遍的に含まれており、樹木では30% 、イネやトウモロコシ稈の15%を占めるバイオマス資源である。その他にも植物は多様な芳香族化合物を構成成分として含んでいる。しかし、リグニンを主成分とする植物由来の芳香族成分は化学構造が多様な成分で構成されている事や複雑な高分子構造を持つため有効な利用技術が開発されていない。従来の利用技術として挙げられるのは、リグニンを主成分とする植物由来の芳香族成分をアルカリ分解などの化学分解で生成する低分子芳香族分解物から、香料原料であるバニリンを分離製造する実用化技術がある。しかし、化学分解で生成するバニリン以外の多量の低分子芳香族物質の有効な利用方法はないのが現状である。そのため製紙工程で大量に生成するリグニンは有効利用される事無く重油の代替え品として燃焼されている。 Lignin, a major plant component, is a biomass resource that is universally contained in plant cell walls as an aromatic polymer, accounting for 30% of trees and 15% of rice and corn straw. In addition, plants contain various aromatic compounds as constituents. However, an effective utilization technique has not been developed for aromatic components derived from plants mainly composed of lignin because they are composed of components having various chemical structures and complex polymer structures. Examples of conventional technologies include the practical use of separating and producing vanillin, a fragrance raw material, from low-molecular-weight aromatic degradation products produced by chemical decomposition such as alkaline decomposition of plant-derived aromatic components mainly composed of lignin. Technology. However, there is currently no effective method for utilizing a large amount of low-molecular aromatic substances other than vanillin produced by chemical decomposition. For this reason, lignin produced in large quantities in the papermaking process is burned as a substitute for heavy oil without being effectively used.
今日の石油化学工業の発展を支えたのは、多様な化学成分の混合物である原油を触媒分解と分溜によってベンゼンやエチレンなどの単一な中間物質に一旦変換し、それらを原料に多様な機能性プラスチックスを製造するという原理である。この石油化学工業の発展を支えた基本原理は、化学構造の多様さや複雑な高分子構造を持つリグニンなど植物芳香族成分の利用技術においても適用可能な普遍的原理である。リグニンを主成分とする植物由来の芳香族成分利用の技術を開発する上で、石油化学の触媒分解に相当するプロセスとして、リグニンなど植物芳香族成分の加水分解や酸化分解、可溶媒分解などの化学的分解法や、超臨界水や超臨界有機溶媒による物理化学的分解法など多くの低分子化技術が既に数多く研究され開発されている。しかしもう一つの技術である、各種分解法により生成する植物成分由来低分子混合物から、様々な機能性プラスチックス原料や化学製品の原料と成りうる有用な単一の中間物質(石油化学においてはエチレンやベンゼン) への変換分離技術は開発されていなかった。この技術が開発されれば、リグニンを主成分とする植物由来の芳香族成分利用が、石油化学に匹敵する技術として発展する可能性がある。 Supporting the development of the petrochemical industry today is the conversion of crude oil, which is a mixture of various chemical components, into a single intermediate substance such as benzene and ethylene by catalytic cracking and fractionation. The principle is to manufacture functional plastics. The basic principle that supported the development of the petrochemical industry is a universal principle that can also be applied in the utilization technology of plant aromatic components such as lignin having diverse chemical structures and complex polymer structures. In developing technologies for the use of plant-derived aromatic components based on lignin, processes equivalent to catalytic decomposition of petrochemicals include hydrolysis, oxidative decomposition, and solvent decomposition of plant aromatic components such as lignin. Many low molecular weight technologies such as chemical decomposition methods and physicochemical decomposition methods using supercritical water or supercritical organic solvents have already been studied and developed. However, another intermediate technology, a low-molecular mixture derived from plant components produced by various decomposition methods, can be used as a raw material for various functional plastic materials and chemical products. No conversion / separation technology has been developed. If this technology is developed, the use of plant-derived aromatic components mainly composed of lignin may develop as a technology comparable to petrochemistry.
本発明者らは、リグニンの分解物であるバニリン、シリンガアルデヒド、p−ヒドロキシベンズアルデヒドなどといったC6C1化合物から、バイオリアクターにより、2−ピロン−4,6−ジカルボン酸に変換する方法を報告している。リグニン分解物を効率良く酸化して、2−ピロン−4,6−ジカルボン酸に変換する酵素は重要であり、現在この酸化反応はC6C1化合物から出発して、ベンズアルデヒドデヒドロゲナーゼ(LigV2,LigV)遺伝子、バニリン酸・シリンガ酸ディメチラーゼ(VanAB)遺伝子、プロトカテク酸4,5−ジオキシゲナーゼ(LigA,LigB又はPmdA, PmdB)遺伝子、4−カルボキシ−2−ヒドロキシムコン酸−6−セミアルデヒドデヒドロゲナーゼ(LigC又はPmdC)遺伝子などがその役割を果たしている。しかしながら、シナピン酸、フェルラ酸、p−クマル酸といったC6C3化合物から出発した場合、対応のアルデヒドへの変換に酸処理などを要するため、効率的な酵素変換は不可能であった。 The present inventors have reported a method of converting a C6C1 compound such as vanillin, syringaldehyde or p-hydroxybenzaldehyde, which is a degradation product of lignin, into 2-pyrone-4,6-dicarboxylic acid by a bioreactor. Yes. An enzyme that efficiently oxidizes a lignin degradation product and converts it into 2-pyrone-4,6-dicarboxylic acid is important. Currently, this oxidation reaction starts from a C6C1 compound, and a benzaldehyde dehydrogenase (LigV2, LigV) gene, Vanillate / syringate demethylase (VanAB) gene, protocatechuate 4,5-dioxygenase (LigA, LigB or PmdA, PmdB) gene, 4-carboxy-2-hydroxymuconate-6-semialdehyde dehydrogenase (LigC or PmdC) ) Genes play a role. However, when starting from C6C3 compounds such as sinapinic acid, ferulic acid, and p-coumaric acid, an efficient enzyme conversion is impossible because an acid treatment or the like is required for conversion to the corresponding aldehyde.
すでに従来発明で、シリンガアルデヒド、バニリン、p-ヒドロキシベンズアルデヒド、シリンガ酸、バニリン酸、p-ヒドロキシ安息香酸およびプロトカテク酸を含むC6C1化合物から、2−ピロン−4,6−ジカルボン酸の発酵生産が可能になっている。本発明では、従来不可能とされた、イネ科植物に多く含まれるC6C3化合物であるシナピン酸、フェルラ酸およびp-クマル酸から2−ピロン−4,6−ジカルボン酸を発酵生産することを可能にした。 Already in the conventional invention, 2-pyrone-4,6-dicarboxylic acid is fermentatively produced from a C6C1 compound containing syringaldehyde, vanillin, p-hydroxybenzaldehyde, syringic acid, vanillic acid, p-hydroxybenzoic acid and protocatechuic acid. It is possible. In the present invention, it is possible to fermentatively produce 2-pyrone-4,6-dicarboxylic acid from sinapinic acid, ferulic acid and p-coumaric acid, which are C6C3 compounds abundant in grasses, which has been impossible in the past. I made it.
植物芳香族成分の低分子化処理混合物に含まれる、シナピン酸、フェルラ酸およびp-クマル酸から、効率的に単一の中間物質2−ピロン−4,6−ジカルボン酸に変換する発酵生産プロセスを構築した。2−ピロン−4,6−ジカルボン酸までの変換に必要な遺伝子(FerBA, LigV2, LigV, VanAB, DesZ, PobA, LigAB, LigC)を適当なプロモーター配列の下流に連結した遺伝子組換えベクターおよびそれを保有する形質転換体細胞を作製し発酵生産を行った。 Fermentative production process for efficiently converting sinapic acid, ferulic acid and p-coumaric acid contained in a plant aromatic component depolymerization mixture into a single intermediate 2-pyrone-4,6-dicarboxylic acid Built. Recombinant vector in which genes necessary for conversion to 2-pyrone-4,6-dicarboxylic acid (FerBA, LigV2, LigV, VanAB, DesZ, PobA, LigAB, LigC) are linked downstream of an appropriate promoter sequence, and A transformant cell having the above was produced and fermented.
すなわち、
(1)本発明は、好ましくはプロモーターとターミネーターとの間に、下記のDNA分子
(a−1)配列番号1記載のフェルロイル CoAシンセターゼ(FerA)遺伝子のDNA分子;
(a−2)配列番号2記載のフェルロイル CoAシンセターゼ(FerA)のアミノ酸配列をコードするDNA分子;
(a−3)配列番号1記載のDNA分子又はその相補配列からなるDNA分子と高ストリンジェントな条件下でハイブリダイズし、且つフェルロイル CoAシンセターゼ(FerA)活性を有するポリペプチドをコードするDNA分子;又は
(a−4)配列番号2記載のアミノ酸配列の1もしくは数個のアミノ酸が欠失、置換及び/又は付加されたアミノ酸配列からなり、且つフェルロイル CoAシンセターゼ(FerA)活性を有するポリペプチドをコードするDNA分子;と
(a'−1)配列番号3記載のフェルロイル CoAヒドラターゼ/リアーゼ(FerB)遺伝子のDNA分子;
(a'−2)配列番号4記載のフェルロイル CoAヒドラターゼ/リアーゼ(FerB)のアミノ酸配列をコードするDNA分子;
(a'−3)配列番号3記載のDNA分子又はその相補配列からなるDNA分子と高ストリンジェントな条件下でハイブリダイズし、且つフェルロイル CoAヒドラターゼ/リアーゼ(FerB)活性を有するポリペプチドをコードするDNA分子;又は
(a'−4)配列番号4記載のアミノ酸配列の1もしくは数個のアミノ酸が欠失、置換及び/又は付加されたアミノ酸配列からなり、且つフェルロイル CoAヒドラターゼ/リアーゼ(FerB)活性を有するポリペプチドをコードするDNA分子;
とを含むFerBA遺伝子を含む組換えベクターを提供する。
That is,
(1) The present invention is preferably a DNA molecule of a feruloyl CoA synthetase (FerA) gene described in the following DNA molecule (a-1) SEQ ID NO: 1 between a promoter and a terminator;
(A-2) a DNA molecule encoding the amino acid sequence of feruloyl CoA synthetase (FerA) described in SEQ ID NO: 2;
(A-3) a DNA molecule that hybridizes with the DNA molecule of SEQ ID NO: 1 or its complementary sequence under highly stringent conditions and encodes a polypeptide having feruloyl CoA synthetase (FerA) activity; Or (a-4) encoding a polypeptide having an amino acid sequence in which one or several amino acids of the amino acid sequence shown in SEQ ID NO: 2 are deleted, substituted and / or added, and having feruloyl CoA synthetase (FerA) activity (A′-1) a feruloyl CoA hydratase / lyase (FerB) gene DNA molecule according to SEQ ID NO: 3;
(A′-2) a DNA molecule encoding the amino acid sequence of feruloyl CoA hydratase / lyase (FerB) described in SEQ ID NO: 4;
(A′-3) which encodes a polypeptide that hybridizes with a DNA molecule comprising SEQ ID NO: 3 or a complementary sequence thereof under highly stringent conditions and has feruloyl CoA hydratase / lyase (FerB) activity DNA molecule; or (a′-4) consisting of an amino acid sequence in which one or several amino acids of SEQ ID NO: 4 have been deleted, substituted and / or added, and feruloyl CoA hydratase / lyase (FerB) activity A DNA molecule encoding a polypeptide having
And a recombinant vector containing the FerBA gene.
(2)本発明はさらに、好ましくはプロモーターとターミネーターとの間に、下記のDNA分子群を有する(1)に記載の組換えベクターを提供する:
ここで、前記DNA分子群は、(b)LigV2遺伝子、(c)LigV遺伝子、(d)VanA及びVanB遺伝子、(e)LigA遺伝子、(f)LigB遺伝子、(g)LigC遺伝子、(h)DesZ遺伝子及び(i)PobA遺伝子並びにそれらの組み合わせから成る群より選ばれ;
(b)LigV2遺伝子は下記のいずれかのDNA分子であり、
(b−1)配列番号5記載のDNA分子;
(b−2)配列番号6記載のアミノ酸配列をコードするDNA分子;
(b−3)配列番号5記載のDNA分子又はその相補配列からなるDNA分子と高ストリンジェントな条件下でハイブリダイズし、かつベンズアルデヒドデヒドロゲナーゼ活性を有するポリペプチドをコードするDNA分子;又は
(b−4)配列番号6記載のアミノ酸配列の1もしくは数個のアミノ酸が欠失、置換及び/又は付加されたアミノ酸配列からなり、かつベンズアルデヒドデヒドロゲナーゼ活性を有するポリペプチドをコードするDNA分子、
(c)LigV遺伝子は下記のいずれかのDNA分子であり、
(c−1)配列番号7記載のDNA分子;
(c−2)配列番号8記載のアミノ酸配列をコードするDNA分子;
(c−3)配列番号7記載のDNA分子の変異体、即ち、配列番号7記載のDNA分子又はその相補配列からなるDNA分子と高ストリンジェントな条件下でハイブリダイズし、ベンズアルデヒドデヒドロゲナーゼ活性を有するポリペプチドをコードするDNA分子;又は
(c−4)配列番号8記載のDNA分子の変異体、即ち、配列番号8記載のアミノ酸配列の1もしくは数個のアミノ酸が欠失、置換及び/又は付加されたアミノ酸配列からなり、ベンズアルデヒドデヒドロゲナーゼ活性を有するポリペプチドをコードするDNA分子;
(d)VanA及びVanB遺伝子はそれぞれ下記のいずれかのDNA分子であり、
(d−1)配列番号9及び11記載のDNA分子;
(d−2)配列番号10及び12記載のアミノ酸配列をコードするDNA分子;
(d−3)配列番号9及び11記載のDNA分子の変異体、即ち、配列番号9及び10記載のDNA分子又はそれぞれの相補配列からなるDNA分子と高ストリンジェントな条件下でハイブリダイズし、かつシリンガ酸に対してディメチラーゼ活性を有する2本のポリペプチドをコードするDNA分子;又は
(d−4)配列番号10及び12記載のアミノ酸配列の変異体、即ち、配列番号10及び/又は12記載のアミノ酸配列のそれぞれにおいて、1もしくは数個のアミノ酸が欠失、置換及び/又は付加されたアミノ酸配列からなり、かつシリンガ酸に対してディメチラーゼ活性を有する2本のポリペプチドのいずれか一方又は両方をコードするDNA分子;
(e)LigA遺伝子は下記のいずれかのDNA分子であり、
(e−1)配列番号13記載のDNA分子;
(e−2)配列番号14記載のアミノ酸配列をコードするDNA分子;
(e−3)配列番号13記載のDNA分子の変異体、即ち、配列番号13記載のDNA分子又はその相補配列からなるDNA分子と高ストリンジェントな条件下でハイブリダイズし、かつプロトカテク酸4,5-ジオキシゲナーゼαサブユニット活性を有するポリペプチドをコードするDNA分子;又は
(e−4)配列番号14記載のDNA分子の変異体、即ち、配列番号14記載のアミノ酸配列の1もしくは数個のアミノ酸が欠失、置換及び/又は付加されたアミノ酸配列からなり、かつプロトカテク酸4,5-ジオキシゲナーゼαサブユニット活性を有するポリペプチドをコードするDNA分子;
(f)LigB遺伝子は下記のいずれかのDNA分子であり、
(f−1)配列番号15記載のDNA分子;
(f−2)配列番号16記載のアミノ酸配列をコードするDNA分子;
(f−3)配列番号15記載のDNA分子の変異体、即ち、配列番号15記載のDNA分子又はその相補配列からなるDNA分子と高ストリンジェントな条件下でハイブリダイズし、かつプロトカテク酸4,5-ジオキシゲナーゼβサブユニット活性を有するポリペプチドをコードするDNA分子;又は
(f−4)配列番号16記載のDNA分子の変異体、即ち、配列番号16記載のアミノ酸配列の1もしくは数個のアミノ酸が欠失、置換及び/又は付加されたアミノ酸配列からなり、かつプロトカテク酸4,5-ジオキシゲナーゼβサブユニット活性を有するポリペプチドをコードするDNA分子;
(g)DNA分子(LigC遺伝子)は下記のいずれかのDNA分子であり、
(g−1)配列番号17記載のDNA分子;
(g−2)配列番号18記載のアミノ酸配列をコードするDNA分子;
(g−3)配列番号17記載のDNA分子の変異体、即ち、配列番号17記載のDNA分子又はその相補配列からなるDNA分子と高ストリンジェントな条件下でハイブリダイズし、かつ4-カルボキシ-2-ヒドロキシムコン酸-6-セミアルデヒドデヒドロゲナーゼ活性を有するポリペプチドをコードするDNA分子;又は
(g−4)配列番号18記載のDNA分子の変異体、即ち、配列番号18記載のアミノ酸配列の1もしくは数個のアミノ酸が欠失、置換及び/又は付加されたアミノ酸配列からなり、かつ4-カルボキシ-2-ヒドロキシムコン酸-6-セミアルデヒドデヒドロゲナーゼ活性を有するポリペプチドをコードするDNA分子;
(h)DesZ遺伝子は下記のいずれかのDNA分子であり、
(h−1)配列番号19記載の3MGA 3,4−ジオキシゲナーゼ(DesZ)遺伝子のDNA分子;
(h−2)配列番号20記載の3MGA 3,4−ジオキシゲナーゼ(DesZ)のアミノ酸配列をコードするDNA分子;
(h−3)配列番号19記載のDNA分子の変異体、即ち、配列番号19記載のDNA分子又はその相補配列からなるDNA分子と高ストリンジェントな条件下でハイブリダイズし、かつ3MGA 3,4−ジオキシゲナーゼ活性を有するポリペプチドをコードするDNA分子;又は
(h−4)配列番号20記載のDNA分子の変異体、即ち、配列番号20記載のアミノ酸配列の1もしくは数個のアミノ酸が欠失、置換及び/又は付加されたアミノ酸配列からなり、かつ3MGA 3,4−ジオキシゲナーゼ活性を有するポリペプチドをコードするDNA分子;
(i)PobA遺伝子は下記のいずれかのDNA分子であり、
(i−1)配列番号21記載のDNA分子;
(i−2)配列番号22記載のアミノ酸配列をコードするDNA分子;
(i−3)配列番号21記載のDNA分子の変異体、即ち、配列番号21記載のDNA分子又はその相補配列からなるDNA分子と高ストリンジェントな条件下でハイブリダイズし、かつp-ヒドロキシ安息香酸ヒドロキシラーゼ活性を有するポリペプチドをコードするDNA分子;又は
(i−4)配列番号22記載のDNA分子の変異体、即ち、配列番号22記載のアミノ酸配列の1もしくは数個のアミノ酸が欠失、置換及び/又は付加されたアミノ酸配列からなり、かつp-ヒドロキシ安息香酸ヒドロキシラーゼ活性を有するポリペプチドをコードするDNA分子。
(2) The present invention further provides the recombinant vector according to (1), preferably having the following DNA molecule group between a promoter and a terminator:
Here, the DNA molecule group includes (b) LigV2 gene, (c) LigV gene, (d) VanA and VanB gene, (e) LigA gene, (f) LigB gene, (g) LigC gene, (h) Selected from the group consisting of the DesZ gene and (i) the PobA gene and combinations thereof;
(B) The LigV2 gene is one of the following DNA molecules:
(B-1) the DNA molecule set forth in SEQ ID NO: 5;
(B-2) a DNA molecule encoding the amino acid sequence set forth in SEQ ID NO: 6;
(B-3) a DNA molecule that hybridizes with the DNA molecule of SEQ ID NO: 5 or a complementary molecule thereof under highly stringent conditions and encodes a polypeptide having benzaldehyde dehydrogenase activity; or (b- 4) a DNA molecule that encodes a polypeptide comprising an amino acid sequence in which one or several amino acids of the amino acid sequence set forth in SEQ ID NO: 6 have been deleted, substituted, and / or added, and having benzaldehyde dehydrogenase activity;
(C) The LigV gene is one of the following DNA molecules:
(C-1) a DNA molecule described in SEQ ID NO: 7;
(C-2) a DNA molecule encoding the amino acid sequence set forth in SEQ ID NO: 8;
(C-3) A variant of the DNA molecule described in SEQ ID NO: 7, that is, hybridizes with a DNA molecule consisting of the DNA molecule described in SEQ ID NO: 7 or its complementary sequence under highly stringent conditions, and has benzaldehyde dehydrogenase activity A DNA molecule encoding the polypeptide; or (c-4) a variant of the DNA molecule described in SEQ ID NO: 8, ie, one or several amino acids of the amino acid sequence described in SEQ ID NO: 8 are deleted, substituted and / or added. A DNA molecule that encodes a polypeptide comprising a sequence of amino acids and having benzaldehyde dehydrogenase activity;
(D) Each of the VanA and VanB genes is one of the following DNA molecules:
(D-1) DNA molecules described in SEQ ID NOs: 9 and 11;
(D-2) a DNA molecule encoding the amino acid sequence of SEQ ID NOS: 10 and 12;
(D-3) hybridizing under high stringency conditions with a mutant of the DNA molecule described in SEQ ID NOs: 9 and 11, that is, the DNA molecule described in SEQ ID NOs: 9 and 10 or a DNA molecule comprising the respective complementary sequences; A DNA molecule encoding two polypeptides having dimethylase activity against syringic acid; or (d-4) a variant of the amino acid sequence described in SEQ ID NOs: 10 and 12, ie, SEQ ID NOs: 10 and / or 12 In each of the amino acid sequences described, either one of two polypeptides consisting of an amino acid sequence in which one or several amino acids have been deleted, substituted and / or added and having dimethylase activity against syringic acid Or a DNA molecule encoding both;
(E) LigA gene is one of the following DNA molecules:
(E-1) the DNA molecule set forth in SEQ ID NO: 13;
(E-2) a DNA molecule encoding the amino acid sequence set forth in SEQ ID NO: 14;
(E-3) a variant of the DNA molecule described in SEQ ID NO: 13, that is, a hybridized DNA molecule consisting of the DNA molecule described in SEQ ID NO: 13 or a complementary sequence thereof under highly stringent conditions, and protocatechuic acid 4, A DNA molecule encoding a polypeptide having 5-dioxygenase α subunit activity; or (e-4) a variant of the DNA molecule described in SEQ ID NO: 14, ie, one or several amino acid sequences described in SEQ ID NO: 14 A DNA molecule encoding a polypeptide consisting of an amino acid sequence in which amino acids have been deleted, substituted and / or added, and having protocatechuate 4,5-dioxygenase α subunit activity;
(F) The LigB gene is one of the following DNA molecules:
(F-1) the DNA molecule set forth in SEQ ID NO: 15;
(F-2) a DNA molecule encoding the amino acid sequence set forth in SEQ ID NO: 16;
(F-3) a variant of the DNA molecule described in SEQ ID NO: 15, that is, a hybridized DNA molecule consisting of the DNA molecule described in SEQ ID NO: 15 or a complementary molecule thereof under highly stringent conditions, and protocatechuic acid 4, A DNA molecule encoding a polypeptide having 5-dioxygenase β subunit activity; or (f-4) a variant of the DNA molecule set forth in SEQ ID NO: 16, ie, one or several amino acid sequences set forth in SEQ ID NO: 16 A DNA molecule encoding a polypeptide consisting of an amino acid sequence in which amino acids are deleted, substituted and / or added, and having protocatechuic acid 4,5-dioxygenase β subunit activity;
(G) The DNA molecule (LigC gene) is one of the following DNA molecules:
(G-1) the DNA molecule set forth in SEQ ID NO: 17;
(G-2) a DNA molecule encoding the amino acid sequence set forth in SEQ ID NO: 18;
(G-3) a variant of the DNA molecule described in SEQ ID NO: 17, ie, a DNA molecule consisting of the DNA molecule described in SEQ ID NO: 17 or a complementary DNA sequence thereof under highly stringent conditions, and 4-carboxy- A DNA molecule encoding a polypeptide having 2-hydroxymuconic acid-6-semialdehyde dehydrogenase activity; or (g-4) a variant of the DNA molecule described in SEQ ID NO: 18, ie, one of the amino acid sequences described in SEQ ID NO: 18 Or a DNA molecule encoding a polypeptide consisting of an amino acid sequence in which several amino acids are deleted, substituted and / or added, and having 4-carboxy-2-hydroxymuconic acid-6-semialdehyde dehydrogenase activity;
(H) The DesZ gene is one of the following DNA molecules:
(H-1) a DNA molecule of 3MGA 3,4-dioxygenase (DesZ) gene described in SEQ ID NO: 19;
(H-2) a DNA molecule encoding the amino acid sequence of 3MGA 3,4-dioxygenase (DesZ) described in SEQ ID NO: 20;
(H-3) A variant of the DNA molecule described in SEQ ID NO: 19, ie, a DNA molecule consisting of the DNA molecule described in SEQ ID NO: 19 or its complementary sequence, hybridized under highly stringent conditions, and 3MGA 3, 4 A DNA molecule encoding a polypeptide having dioxygenase activity; or (h-4) a variant of the DNA molecule described in SEQ ID NO: 20, ie, deletion of one or several amino acids of the amino acid sequence described in SEQ ID NO: 20 A DNA molecule encoding a polypeptide consisting of a substituted and / or added amino acid sequence and having 3MGA 3,4-dioxygenase activity;
(I) The PobA gene is one of the following DNA molecules:
(I-1) a DNA molecule set forth in SEQ ID NO: 21;
(I-2) a DNA molecule encoding the amino acid sequence set forth in SEQ ID NO: 22;
(I-3) a variant of the DNA molecule described in SEQ ID NO: 21, that is, a hybridized DNA molecule consisting of the DNA molecule described in SEQ ID NO: 21 or a complementary sequence thereof under highly stringent conditions, and p-hydroxybenzoic acid A DNA molecule encoding a polypeptide having acid hydroxylase activity; or (i-4) a variant of the DNA molecule described in SEQ ID NO: 22, ie, one or several amino acids of the amino acid sequence described in SEQ ID NO: 22 are deleted. A DNA molecule encoding a polypeptide consisting of a substituted and / or added amino acid sequence and having p-hydroxybenzoate hydroxylase activity.
(3)本発明はさらに、好ましくはプロモーターとターミネーターとの間に、下記のDNA分子群を有する(1)〜(2)のいずれかに記載の組換えベクターを提供する:
ここで、前記DNA分子群は、(j)PmdA遺伝子、(k)PmdB遺伝子、(l)PmdC遺伝子及びその組み合わせから成る群より選ばれ;
(j)PmdA遺伝子は下記のいずれかのDNA分子であり、
(j−1)配列番号23記載のDNA分子;
(j−2)配列番号24記載のアミノ酸配列をコードするDNA分子;
(j−3)配列番号23記載のDNA分子の変異体、即ち、配列番号23記載のDNA分子又はその相補配列からなるDNA分子と高ストリンジェントな条件下でハイブリダイズし、かつプロトカテク酸4,5-ジオキシゲナーゼαサブユニット活性を有するポリペプチドをコードするDNA分子;又は
(j−4)配列番号24記載のDNA分子の変異体、即ち、配列番号24記載のアミノ酸配列の1もしくは数個のアミノ酸が欠失、置換及び/又は付加されたアミノ酸配列からなり、かつプロトカテク酸4,5-ジオキシゲナーゼαサブユニット活性を有するポリペプチドをコードするDNA分子;
(k)PmdB遺伝子は下記のいずれかのDNA分子であり、
(k−1)配列番号25記載のDNA分子;
(k−2)配列番号26記載のアミノ酸配列をコードするDNA分子;
(k−3)配列番号25記載のDNA分子の変異体、即ち、配列番号25記載のDNA分子又はその相補配列からなるDNA分子と高ストリンジェントな条件下でハイブリダイズし、かつプロトカテク酸4,5-ジオキシゲナーゼβサブユニット活性を有するポリペプチドをコードするDNA分子;又は
(k−4)配列番号26記載のDNA分子の変異体、即ち、配列番号26記載のアミノ酸配列の1もしくは数個のアミノ酸が欠失、置換及び/又は付加されたアミノ酸配列からなり、かつプロトカテク酸4,5-ジオキシゲナーゼβサブユニット活性を有するポリペプチドをコードするDNA分子;
(l)DNA分子(PmdC遺伝子)は下記のいずれかのDNA分子であり、
(l−1)配列番号27記載のDNA分子;
(l−2)配列番号28記載のアミノ酸配列をコードするDNA分子;
(l−3)配列番号27記載のDNA分子の変異体、即ち、配列番号27記載のDNA分子又はその相補配列からなるDNA分子と高ストリンジェントな条件下でハイブリダイズし、かつ4-カルボキシ-2-ヒドロキシムコン酸-6-セミアルデヒドデヒドロゲナーゼ活性を有するポリペプチドをコードするDNA分子;又は
(l−4)配列番号28記載のDNA分子の変異体、即ち、配列番号28記載のアミノ酸配列の1もしくは数個のアミノ酸が欠失、置換及び/又は付加されたアミノ酸配列からなり、かつ4-カルボキシ-2-ヒドロキシムコン酸-6-セミアルデヒドデヒドロゲナーゼ活性を有するポリペプチドをコードするDNA分子。
(3) The present invention further provides the recombinant vector according to any one of (1) to (2), preferably having the following DNA molecule group between a promoter and a terminator:
Here, the DNA molecule group is selected from the group consisting of (j) PmdA gene, (k) PmdB gene, (l) PmdC gene and combinations thereof;
(J) The PmdA gene is one of the following DNA molecules:
(J-1) the DNA molecule set forth in SEQ ID NO: 23;
(J-2) a DNA molecule encoding the amino acid sequence set forth in SEQ ID NO: 24;
(J-3) a variant of the DNA molecule described in SEQ ID NO: 23, that is, a hybridized DNA molecule consisting of the DNA molecule described in SEQ ID NO: 23 or a complementary sequence thereof under highly stringent conditions, and protocatechuic acid 4, A DNA molecule encoding a polypeptide having 5-dioxygenase α subunit activity; or (j-4) a variant of the DNA molecule set forth in SEQ ID NO: 24, ie, one or several amino acid sequences set forth in SEQ ID NO: 24 A DNA molecule encoding a polypeptide consisting of an amino acid sequence in which amino acids have been deleted, substituted and / or added, and having protocatechuate 4,5-dioxygenase α subunit activity;
(K) The PmdB gene is one of the following DNA molecules:
(K-1) the DNA molecule set forth in SEQ ID NO: 25;
(K-2) a DNA molecule encoding the amino acid sequence set forth in SEQ ID NO: 26;
(K-3) a variant of the DNA molecule represented by SEQ ID NO: 25, ie, a DNA molecule comprising the DNA molecule represented by SEQ ID NO: 25 or its complementary sequence, hybridized under highly stringent conditions, and protocatechuic acid 4, A DNA molecule encoding a polypeptide having 5-dioxygenase β subunit activity; or (k-4) a variant of the DNA molecule set forth in SEQ ID NO: 26, ie, one or several amino acid sequences set forth in SEQ ID NO: 26 A DNA molecule encoding a polypeptide consisting of an amino acid sequence in which amino acids are deleted, substituted and / or added, and having protocatechuic acid 4,5-dioxygenase β subunit activity;
(L) A DNA molecule (PmdC gene) is one of the following DNA molecules:
(L-1) a DNA molecule represented by SEQ ID NO: 27;
(L-2) a DNA molecule encoding the amino acid sequence set forth in SEQ ID NO: 28;
(L-3) a variant of the DNA molecule described in SEQ ID NO: 27, that is, a DNA molecule consisting of the DNA molecule described in SEQ ID NO: 27 or a complementary DNA sequence thereof under highly stringent conditions, and 4-carboxy- A DNA molecule encoding a polypeptide having 2-hydroxymuconic acid-6-semialdehyde dehydrogenase activity; or (l-4) a variant of the DNA molecule set forth in SEQ ID NO: 28, ie, one of the amino acid sequences set forth in SEQ ID NO: 28 Alternatively, a DNA molecule consisting of an amino acid sequence in which several amino acids are deleted, substituted and / or added, and encoding a polypeptide having 4-carboxy-2-hydroxymuconic acid-6-semialdehyde dehydrogenase activity.
(4)本発明は、前記FerBA遺伝子が、スフィンゴビウム・パウシモビリス(Sphingobium paucimobilis)SYK-6株由来である、(1)〜(3)のいずれか1に記載の組換えベクターを提供する。
(5)本発明は、(1)〜(3)のいずれか1に記載の組換えベクターを含む形質転換体を提供する。
(6)本発明は、(5)に記載の形質転換体を培養し、該培養物からPDCを採取することを特徴とする、PDCの製造方法を提供する。
(7)本発明は、シナピン酸を出発材料とする、(6)に記載のPDCの製造方法を提供する。
(8)本発明は、フェルラ酸を出発材料とする、(6)に記載のPDCの製造方法を提供する。
(9)本発明は、p−クマリン酸(p−クマル酸)を出発材料とする、(6)に記載のPDCの製造方法を提供する。
(10)本発明は、(1)〜(3)のいずれか1に記載の組換えベクターの発現により得られるタンパク質を提供する。
(4) The present invention provides the recombinant vector according to any one of (1) to (3), wherein the FerBA gene is derived from Sphingobium paucimobilis SYK-6 strain.
(5) The present invention provides a transformant comprising the recombinant vector according to any one of (1) to (3).
(6) The present invention provides a method for producing PDC, which comprises culturing the transformant according to (5) and collecting PDC from the culture.
(7) The present invention provides the method for producing PDC according to (6), wherein sinapinic acid is used as a starting material.
(8) The present invention provides the method for producing PDC according to (6), wherein ferulic acid is used as a starting material.
(9) The present invention provides the method for producing PDC according to (6), wherein p-coumaric acid (p-coumaric acid) is used as a starting material.
(10) The present invention provides a protein obtained by expressing the recombinant vector according to any one of (1) to (3).
本発明は、化学構造の多様性や複雑な高分子構造を持ち利用が困難なリグニンなどの植物芳香族成分の加水分解や酸化分解、可溶媒分解などの化学的分解法や、超臨界水や超臨界有機溶媒による物理化学的分解法などの低分子化技術で生成する、シナピン酸、フェルラ酸、p-クマル酸、バニリン、シリンガアルデヒド、p-ヒドロキシベンズアルデヒド、バニリン酸、シリンガ酸、p-ヒドロキシ安息香酸、プロトカテク酸等の混合物から、微生物機能を利用することにより、単一の化合物、2−ピロン−4,6−ジカルボン酸を発酵生産することを可能とした。
特に、本発明は、従来発明では変換が不可能であったC6C3化合物であるシナピン酸、フェルラ酸、p-クマル酸からの効率的な変換を実証した。
The present invention relates to chemical decomposition methods such as hydrolysis, oxidative decomposition, and solvolysis of plant aromatic components such as lignin, which have a variety of chemical structures and complex polymer structures, which are difficult to use, supercritical water, Sinapic acid, ferulic acid, p-coumaric acid, vanillin, syringaldehyde, p-hydroxybenzaldehyde, vanillic acid, syringic acid, p- produced by low molecular weight technologies such as physicochemical decomposition using supercritical organic solvents By utilizing a microbial function from a mixture of hydroxybenzoic acid, protocatechuic acid and the like, it was possible to fermentatively produce a single compound, 2-pyrone-4,6-dicarboxylic acid.
In particular, the present invention demonstrated efficient conversion from sinapinic acid, ferulic acid, and p-coumaric acid, which are C6C3 compounds that could not be converted by the conventional invention.
本発明は、シリンガアルデヒドやシリンガ酸などといったリグニン分解物からPDCを製造するプロセスを触媒するための酵素遺伝子を含む組換えベクターを提供する。本発明の組換えベクターは、具体的には、シナピン酸、フェルラ酸及びp−クマル酸をその対応のアルデヒド、具体的にはシリンガアルデヒド、バニリン及びp−ヒドロキシベンズアルデヒドのそれぞれに酸化することで、PDCを製造するプロセスを触媒する配列番号1(FerB遺伝子)に示す塩基配列と配列番号3(FerA遺伝子)に示す塩基配列とから成るFerBA遺伝子を含むことを特徴とする。例えば、フェルロイル CoAシンセターゼ(FerA)はフェルラ酸などのカルボキシル基へのCoAの転移を触媒し、補酵素ATPやMg2+の存在下でフェルロイル−CoAなどを産生する。フェルラ酸から出発してフェルロイル−CoAが得られる場合、フェルロイル−CoAはフェルロイル CoAヒドラターゼ/リアーゼ(FerB)により4−ヒドロキシ−3−メトキシフェニル−β−ヒドロキシプロピオニル−CoAへと水和・分解され、その結果バニリンとアセチル-CoAが生成される。FerBA遺伝子はFerB遺伝子とFerA遺伝子とから構成された既知配列であり、Accession Number: AB072376として登録され、スフィンゴビウム・パウシモビリス(S. paucimobilis)SYK-6株に由来する(J. Bacteriol 2004 186(15):4951-9)。シナピン酸、フェルラ酸及びp−クマル酸から出発したPDCへの変換経路の一例を図1に示す。 The present invention provides a recombinant vector containing an enzyme gene for catalyzing the process of producing PDC from a lignin degradation product such as syringaldehyde or syringic acid. The recombinant vector of the present invention specifically oxidizes sinapinic acid, ferulic acid and p-coumaric acid to their corresponding aldehydes, specifically syringaldehyde, vanillin and p-hydroxybenzaldehyde, respectively. And a FerBA gene comprising a base sequence shown in SEQ ID NO: 1 (FerB gene) and a base sequence shown in SEQ ID NO: 3 (FerA gene), which catalyzes the process of producing PDC. For example, feruloyl CoA synthetase (FerA) catalyzes the transfer of CoA to a carboxyl group such as ferulic acid and produces feruloyl-CoA in the presence of coenzymes ATP and Mg2 + . When feruloyl-CoA is obtained starting from ferulic acid, feruloyl-CoA is hydrated and decomposed to 4-hydroxy-3-methoxyphenyl-β-hydroxypropionyl-CoA by feruloyl CoA hydratase / lyase (FerB), As a result, vanillin and acetyl-CoA are produced. FerBA gene is a known sequence composed of FerB gene and FerA gene, registered as Accession Number: AB072376, and derived from S. paucimobilis SYK-6 strain (J. Bacteriol 2004 186 ( 15): 4951-9). An example of a conversion pathway to PDC starting from sinapinic acid, ferulic acid and p-coumaric acid is shown in FIG.
本発明の組換えベクターはさらに好ましくは、FerBA遺伝子に加え、シリンガアルデヒドをシリンガ酸に変換するベンズアルデヒドデヒドロゲナーゼ(LigV2)遺伝子(配列番号5)、シリンガ酸を3−O−メチルガリック酸に変換するバニリン酸・シリンガ酸ディメチラーゼ(VanA及びVanB)遺伝子(配列番号9及び11)、3−O−メチルガリック酸(3MGA)を酸化する3MGA 3,4−ジオキシゲナーゼ(DesZ)遺伝子(配列番号19)を含む。このように、本発明に係る組換えベクターはLigV2遺伝子と、VanA及びVanB遺伝子と、DesZ遺伝子とを含むことで、シリンガアルデヒド→シリンガ酸→3GMA→PDCに至る変換過程を触媒できる。さらに、又はDesZの代わりに、本発明の組換えベクターは、3MGAを、DesZほど効率的ではないが、PDCへと酸化する、プロトカテク酸4,5-ジオキシゲナーゼ(LigA, LigB又はPmdA, PmdB)遺伝子、4-カルボキシ-2-ヒドロキシムコン酸-6-セミアルデヒドデヒドロゲナーゼ(LigC又はPmdC)遺伝子を更に含んでよい。これにより、シリンガアルデヒド→シリンガ酸→3GMA→PDCに至る変換過程はなお一層触媒される。 The recombinant vector of the present invention is more preferably a benzaldehyde dehydrogenase (LigV2) gene (SEQ ID NO: 5) that converts syringaldehyde to syringic acid in addition to the FerBA gene, and syringic acid to 3-O-methylgallic acid. Vanillic acid / syringate demethylase (VanA and VanB) genes (SEQ ID NOs: 9 and 11), 3MGA 3,4-dioxygenase (DesZ) gene (SEQ ID NO: 19) that oxidizes 3-O-methylgallic acid (3MGA) including. Thus, the recombinant vector according to the present invention can catalyze the conversion process of syringaldehyde → syringic acid → 3GMA → PDC by including the LigV2 gene, VanA and VanB genes, and the DesZ gene. In addition, or in place of DesZ, the recombinant vector of the present invention is a protocatechuate 4,5-dioxygenase (LigA, LigB or PmdA, PmdB) that oxidizes 3MGA to PDC, although not as efficient as DesZ. The gene may further comprise a 4-carboxy-2-hydroxymuconate-6-semialdehyde dehydrogenase (LigC or PmdC) gene. This further catalyzes the conversion process of syringaldehyde → syringic acid → 3GMA → PDC.
DesZ遺伝子配列は既知配列であり、Accession Number: AB110976として登録され、スフィンゴビウム・パウシモビリス(S. paucimobilis)SYK-6株に由来する(J. Bacteriol 2004 186(15):4951-9)。 The DesZ gene sequence is a known sequence, registered as Accession Number: AB110976, and is derived from S. paucimobilis SYK-6 strain (J. Bacteriol 2004 186 (15): 4951-9).
なおさらに、本発明の組換えベクターは好ましくは、バニリンをバニリン酸へと酸化する、あるいはp−ヒドロキシベンズアルデヒドをp−ヒドロキシ安息香酸へと酸化するベンズアルデヒドデヒドロゲナーゼ(LigV)遺伝子、及び/又はp−ヒドロキシ安息香酸をプロトカテク酸へと酸化するp-ヒドロキシ安息香酸ヒドロキシラーゼ(PobA)遺伝子を更に含んでよい。これにより、バニリン→バニリン酸→プロトカテク酸(PCA)→PDCに至る変換過程や、p−ヒドロキシベンズアルデヒド→p−ヒドロキシ安息香酸→PCA→PDCに至る変換過程は一層を触媒される。 Still further, the recombinant vector of the present invention is preferably a benzaldehyde dehydrogenase (LigV) gene that oxidizes vanillin to vanillic acid or oxidizes p-hydroxybenzaldehyde to p-hydroxybenzoic acid, and / or p-hydroxy. It may further comprise a p-hydroxybenzoate hydroxylase (PobA) gene that oxidizes benzoic acid to protocatechuic acid. Thereby, the conversion process from vanillin → vanillic acid → protocatechuic acid (PCA) → PDC and the conversion process from p-hydroxybenzaldehyde → p-hydroxybenzoic acid → PCA → PDC are further catalyzed.
DesZ、VanA, VanB, LigA, LigB, LigC, LigV, PobA遺伝子及びその遺伝子産物は全て公知である。VanA, VanB はそれぞれ特開2005-278549号公報に記載の配列番号1、2、3で示されるDNA分子からなる遺伝子に相当し、LigA、LigB、LigCは、それぞれ、同公報に記載の配列番号14、16、18で示されるDNA分子からなる遺伝子に相当し、LigVは同広報に記載の配列番号21で示されるDNA分子からなる遺伝子に相当する。また、シュードモナス・プチダ(Pseudomonas putida)KT2440由来のPobA遺伝子は、Accession No.NC 002947としてNCBIに登録されている。これらの各遺伝子には、上記の各配列番号又はAccession No.で特定されたDNA分子の他に、そのDNA分子と相補的な塩基配列からなるDNAと高ストリンジェントな条件でハイブリダイズし、かつそのDNA分子と同一の活性を有するポリペプチドをコードするDNA分子も含まれる。 The DesZ, VanA, VanB, LigA, LigB, LigC, LigV, PobA genes and their gene products are all known. VanA and VanB correspond to genes consisting of DNA molecules represented by SEQ ID NOs: 1, 2, and 3 described in JP-A-2005-278549, respectively. LigA, LigB, and LigC are respectively SEQ ID NOs described in the same publication LigV corresponds to a gene consisting of a DNA molecule represented by SEQ ID NO: 21 described in the publication. The PobA gene derived from Pseudomonas putida KT2440 is Accession No. NC It is registered with NCBI as 002947. Each of these genes has the above SEQ ID No. or Accession No. In addition to the DNA molecule specified in 1., a DNA molecule that hybridizes with a DNA comprising a complementary base sequence to the DNA molecule under highly stringent conditions and encodes a polypeptide having the same activity as the DNA molecule Is also included.
LigV2は特願2009-221306に記載されている新規遺伝子である。LigV2は、添付の図1においてLigVが触媒する酸化反応、すなわちシリンガアルデヒドからシリンガ酸への反応、及びp-ヒドロキシベンズアルデヒドからp-ヒドロキシ安息香酸への反応を、LigVよりも効率良く進行させる。 LigV2 is a novel gene described in Japanese Patent Application No. 2009-221306. LigV2 advances the oxidation reaction catalyzed by LigV in FIG. 1, that is, the reaction from syringaldehyde to syringic acid and the reaction from p-hydroxybenzaldehyde to p-hydroxybenzoic acid more efficiently than LigV.
LigV2遺伝子は、配列番号5や6の配列情報に基づいて、一般的遺伝子工学的手法により製造、取得することができる。具体的には、本発明の遺伝子が発現される微生物、例えばスフィンゴビウム・パウシモビリス(S. paucimobilis)SYK-6株より、常法に従ってゲノムDNAライブラリーを調製し、該ライブラリーから、本発明遺伝子に特有の適当なプローブ等を用いて所望クローンを選択することにより製造することができる。上記において、SYK-6株からの全RNAの分離、mRNAの分離及び精製、ゲノムDNAの取得及びそのクローニングなどは、いずれも常法に従って行うことができる。 The LigV2 gene can be produced and obtained by a general genetic engineering technique based on the sequence information of SEQ ID NOs: 5 and 6. Specifically, a genomic DNA library is prepared from a microorganism in which the gene of the present invention is expressed, for example, S. paucimobilis SYK-6 strain according to a conventional method. It can be produced by selecting a desired clone using an appropriate probe specific to the gene. In the above, isolation of total RNA from SYK-6 strain, isolation and purification of mRNA, acquisition of genomic DNA, cloning thereof, and the like can be performed according to conventional methods.
LigV2遺伝子をゲノムDNAライブラリーからスクリーニングする方法も、特に制限されず、通常の各種方法に従うことができる。具体的方法としては、例えば、目的の該酸配列に選択的に結合するプローブを用いたプラークハイブリダイゼーション法、コロニーハイブリダイゼーション法など、及びこれらの組み合わせを例示することができる。 The method for screening the LigV2 gene from a genomic DNA library is not particularly limited, and various conventional methods can be used. Specific methods include, for example, a plaque hybridization method using a probe that selectively binds to the target acid sequence, a colony hybridization method, and a combination thereof.
上記方法において用いられるプローブとしては、本発明の遺伝子の塩基配列に関する情報をもとにして化学合成されたDNAなどが一般的に使用できる。また、本発明の遺伝子の塩基配列情報に基づき設定したセンス・プライマー及びアンチセンス・プライマーを、スクリーニング用プローブとして用いることができる。 As the probe used in the above method, DNA chemically synthesized based on information on the base sequence of the gene of the present invention can be generally used. In addition, sense primers and antisense primers set based on the nucleotide sequence information of the gene of the present invention can be used as screening probes.
本発明の遺伝子の取得に際しては、PCR法(Science,230,1350(1985))によるDNA増幅法が好適に利用できる。増幅させたDNA断片の単離精製は、常法に従って行うことができる。例えばゲル電気泳動法などが挙げられる。上記方法に従って得られる本発明の遺伝子は、常法、例えばジデオキシ法(Proc.Natl.Acad.Sci.,USA.,74,5463(1977))、マキサム−ギルバート法(Methods in Enzymology,65,499(1980))などに従って、その塩基配列を決定することができる。また、簡便には、市販のシークエンスキットなどを用いて、その塩基配列を決定することができる。 In obtaining the gene of the present invention, a DNA amplification method by PCR (Science, 230, 1350 (1985)) can be suitably used. Isolation and purification of the amplified DNA fragment can be performed according to a conventional method. Examples thereof include gel electrophoresis. The gene of the present invention obtained according to the above method can be obtained by conventional methods such as the dideoxy method (Proc. Natl. Acad. Sci., USA., 74, 5463 (1977)), the Maxam-Gilbert method (Methods in Enzymology, 65, 499). (1980)) and the like, the base sequence can be determined. For convenience, the base sequence can be determined using a commercially available sequence kit or the like.
PmdA、PmdB及びPmdC遺伝子も特願2009-221306に記載され、LigA遺伝子、LigB遺伝子、LigC遺伝子と同様に、プロトカテク酸を効率良くPDCに変換する。したがって、本発明の組換えベクターは、LigA遺伝子と、LigB遺伝子と、LigC遺伝子とを含む代わりに、あるいはそれに加えて、PmdA、PmdB及びPmdC遺伝子又はその変異体を含んでよい。
配列番号22に示すPmdA遺伝子(プロトカテク酸4,5-ジオキシゲナーゼ αサブユニット遺伝子)は、プロトカテク酸 4,5-環を開裂し、プロトカテク酸を4-カルボキシ-2-ヒドロキシムコン酸-6-セミアルデヒドに変換するジオキシゲナーゼのα-サブユニットをコードし、配列番号24に示すPmdB遺伝子(プロトカテク酸4,5-ジオキシゲナーゼ βサブユニット遺伝子)は、該酵素のβ-サブユニットをコードする。PmdA遺伝子及びPmdB遺伝子の塩基配列はいずれも、Accession No.AF459635としてNCBIに登録されている。また、配列番号26に示すPmdC遺伝子(プロトカテク酸 メタジオキシゲナーゼ遺伝子)は、4-カルボキシ-2-ヒドロキシムコン酸-6-セミアルデヒドを開環してPDCに変換するデヒドロゲナーゼをコードする遺伝子であり、Accession No.AF305325としてNCBIに登録されている。
PmdA, PmdB and PmdC genes are also described in Japanese Patent Application No. 2009-221306, and protocatechuic acid is efficiently converted to PDC in the same manner as the LigA gene, LigB gene and LigC gene. Therefore, the recombinant vector of the present invention may contain PmdA, PmdB, and PmdC genes or variants thereof instead of or in addition to the LigA gene, the LigB gene, and the LigC gene.
The PmdA gene (protocatechuic acid 4,5-dioxygenase α subunit gene) shown in SEQ ID NO: 22 cleaves the protocatechuic acid 4,5-ring and converts protocatechuic acid to 4-carboxy-2-hydroxymuconate-6-semi The PmdB gene (protocatechuic acid 4,5-dioxygenase β subunit gene) shown in SEQ ID NO: 24 encodes the β-subunit of the enzyme, which encodes the α-subunit of dioxygenase that converts to aldehyde. The base sequences of the PmdA gene and the PmdB gene are both Accession No. It is registered with NCBI as AF459635. The PmdC gene (protocatechuic acid metadioxygenase gene) shown in SEQ ID NO: 26 is a gene encoding a dehydrogenase that opens 4-carboxy-2-hydroxymuconic acid-6-semialdehyde and converts it to PDC. Accession No. It is registered with NCBI as AF305325.
PmdA、PmdB、及びPmdC遺伝子は、例えば、コマモナス属 E6(Comamonas sp. E6)株から、コマモナス・テストステロニ BR6020株由来のゲノム(Accession NO.AF305325)を参考にして、PCR法〔Science,230,1350(1985)〕によるDNA/RNA増幅法を用いて獲得することができる。かかるPCR法の採用に際して使用されるプライマーは、コマモナス・テストステロニ BR6020株由来の遺伝子の配列情報に基づいて適宜設定でき、これは常法に従って調製できる。 PmdA, PmdB, and PmdC gene is, for example, from Comamonas sp. E6 (Comamonas sp. E6) Co., Ltd., and genome derived from Comamonas testosteroni BR6020 strain (Accession NO.AF305325) as a reference, PCR method [Science, 230,1350 (1985)] can be obtained using the DNA / RNA amplification method. Primers used for adopting such a PCR method can be appropriately set based on the sequence information of the gene derived from Comamonas testosteroni strain BR6020, and can be prepared according to a conventional method.
本明細書において、「高ストリンジェントな条件」とは、いわゆる特異的なハイブリッドが形成され、非特異的なハイブリッドが形成されない条件をいう。高ストリンジェントな条件としては、同一性が高いDNA同士がハイブリダイズし、それより同一性が低いDNA同士がハイブリダイズしない条件、例えば、Molecular cloning a Laboratory manual 2nd edition(Sambrookら、1989)に記載の条件が挙げられる。具体的には、通常のサザンハイブリダイゼーションにおける洗浄の条件である60℃、1×SSC、0.1%SDS、好ましくは、0.1×SSC、0.1%SDSで相当する塩濃度でハイブリダイズする条件が挙げられる。 In the present specification, “high stringent conditions” refers to conditions under which so-called specific hybrids are formed and non-specific hybrids are not formed. Highly stringent conditions are described in conditions where DNAs with high identity hybridize and DNAs with lower identity do not hybridize, eg, Molecular cloning a Laboratory manual 2nd edition (Sambrook et al., 1989). These conditions are listed. Specifically, conditions for hybridization at a salt concentration of 60 ° C., 1 × SSC, 0.1% SDS, preferably 0.1 × SSC, 0.1% SDS, which are washing conditions in normal Southern hybridization, can be mentioned. .
本明細書において、「1個もしくは数個のアミノ酸が欠失、置換及び/又は付加されたアミノ酸配列」とは、注目の配列番号のアミノ酸配列と等価のアミノ酸配列を意味し、具体的には、好ましくは1〜20個のアミノ酸、より好ましくは1〜10個のアミノ酸が欠失、置換もしくは付加されたアミノ酸配列を意味し、付加には、両末端への1個〜数個のアミノ酸の付加が含まれる。 In the present specification, the “amino acid sequence in which one or several amino acids are deleted, substituted and / or added” means an amino acid sequence equivalent to the amino acid sequence of the SEQ ID NO of interest, specifically, Means an amino acid sequence in which preferably 1 to 20 amino acids, more preferably 1 to 10 amino acids are deleted, substituted or added, and the addition includes one to several amino acids at both ends. Includes appends.
本発明に係る遺伝子群を挿入するためのベクターは、宿主中で複製可能なものであれば特に制限されず、例えば、プラスミドDNA、ファージDNAなどが挙げられる。
プラスミドDNAとしては、pBR322、pBR325、pUC118、pUC119、pET21、pET28、pGEX−4T、pQE−30、pQE−60などの大腸菌宿主用プラスミド、pUB110、pTP5などの枯草菌用プラスミド、YEp13、YEp24、YCp50などの酵母宿主用プラスミド、pBI221、pBI121などの植物細胞宿主用プラスミドなどが挙げられる。ファージDNAとしてはλファージなどが挙げられる。更に、レトロウイルス又はワクシニアウイルスなどの動物ウイルス、バキュロウイルスなどの昆虫ウイルスベクターを用いることもできる。
The vector for inserting the gene group according to the present invention is not particularly limited as long as it can replicate in the host, and examples thereof include plasmid DNA, phage DNA, and the like.
Plasmid DNA includes plasmids for E. coli hosts such as pBR322, pBR325, pUC118, pUC119, pET21, pET28, pGEX-4T, pQE-30, and pQE-60, plasmids for Bacillus subtilis such as pUB110 and pTP5, YEp13, YEp24, and YCp50. And yeast cell plasmids such as pBI221 and pBI121. Examples of phage DNA include λ phage. Furthermore, animal viruses such as retrovirus or vaccinia virus, and insect virus vectors such as baculovirus can be used.
本発明に係る遺伝子群をベクターに挿入するには、まず、本発明に係る各遺伝子を有する精製されたDNAを適当な制限酵素で切断し、適当なベクターDNAの制限酵素部位又はマルチクローニングサイトに挿入してベクターに連結する方法などが採用される。 In order to insert the gene group according to the present invention into a vector, first, the purified DNA having each gene according to the present invention is cleaved with an appropriate restriction enzyme, and then introduced into a restriction enzyme site or a multicloning site of an appropriate vector DNA. A method of inserting and linking to a vector is employed.
本発明に係る遺伝子群は、その遺伝子群の機能が発揮されるようにベクターに組み込むことができる。すなわち、ベクターは、本発明に係る各遺伝子、プロモーター、所望によりエンハンサーなどのシスエレメント、スプライシングシグナル、ポリA付加シグナル、選択マーカー、リボソーム結合配列(シャイン・ダルガノ配列)などを含むように調製することができる。選択マーカーとしては、例えば、アンピシリン耐性遺伝子、ネオマイシン耐性遺伝子、ジヒドロ葉酸還元酵素遺伝子などを使用することができる。 The gene group concerning this invention can be integrated in a vector so that the function of the gene group may be exhibited. That is, the vector should be prepared so as to include each gene according to the present invention, a promoter, and optionally a cis element such as an enhancer, a splicing signal, a poly A addition signal, a selection marker, a ribosome binding sequence (Shine-Dalgarno sequence) and the like. Can do. As a selection marker, for example, an ampicillin resistance gene, a neomycin resistance gene, a dihydrofolate reductase gene, or the like can be used.
プロモーターとしては、大腸菌などの宿主中で発現できるものであればいずれを用いてもよい。例えばtrpプロモーター、lacプロモーター、PLプロモーター、PRプロモーターなどの大腸菌由来のものやT7プロモーターなどのファージ由来のものが用いられる。更に、tacプロモーターなどのように人為的に設計改変されたプロモーターを用いてもよい。 Any promoter can be used as long as it can be expressed in a host such as Escherichia coli. For example, those derived from Escherichia coli such as trp promoter, lac promoter, PL promoter and PR promoter, and those derived from phage such as T7 promoter are used. Furthermore, an artificially designed and modified promoter such as a tac promoter may be used.
本発明に係る遺伝子群を含む組換えベクターを、当該遺伝子群が発現し得るように宿主中に導入することにより、形質転換することができる。形質転換の方法としては、プロトプラスト法、コンピテントセル法、エレクトロポレーション法等が挙げられる。 The recombinant vector containing the gene group according to the present invention can be transformed by introducing it into a host so that the gene group can be expressed. Examples of transformation methods include protoplast method, competent cell method, electroporation method and the like.
宿主としては、本発明の遺伝子群を発現できるものであれば特に限定されるものではない。例えば、シュードモナス・プチダ(Pseudomonas putida)などのシュードモナス属、エッシェリヒア・コリ(Escherichia coli)などのエッシェリヒア属、バチルス・ズブチリス(Bacillus subtilis)などのバチルス属、リゾビウム・メリロティ(Rhizobium meliloti)などのリゾビウム属に属する細菌類の他に、サッカロマイセス・セレビシエ(Saccharomyces cerevisiae)、シゾサッカロマイセス・ポンベ(Schizosaccharomyces pombe)、ピヒア・パストリス(Pichia pastoris)などの酵母;シロイヌナズナ、タバコ、トウモロコシ、イネ、ニンジンなどから株化した植物細胞や該植物から調製したプロトプラスト;COS細胞、CHO細胞などの動物細胞;及び、Sf9、Sf21などの昆虫細胞が挙げられる。好ましくは、植物成分由来、化学合成もしくは石油由来のバニリン、シリンガアルデヒド、バニリン酸、シリンガ酸、プロトカテク酸、p-ヒドロキシベンズアルデヒド、p-ヒドロキシ安息香酸の分解代謝酵素機能を消失せしめたいわゆるPDC代謝能を有しない、あるいは代謝能の弱い宿主が使用され、その典型例としてシュードモナス・プチダPpY1100株が挙げられる。 The host is not particularly limited as long as it can express the gene group of the present invention. For example, Pseudomonas putida ( Pseudomonas putida ), Escherichia coli ( Escherichia coli ) Escherichia , Bacillus subtilis ( Bacillus subtilis ) Bacillus, Rhizobium meliloti ( Rhizobium meliloti ) Saccharomyces cerevisiae , Schizosaccharomyces pombe , Pichia pastoris and other yeasts; Arabidopsis, tobacco, corn, rice, carrots, etc. Plant cells and protoplasts prepared from the plants; animal cells such as COS cells and CHO cells; and insect cells such as Sf9 and Sf21. Preferably, so-called PDC metabolism in which the function of degradation and metabolism of plant components-derived, chemically synthesized or petroleum-derived vanillin, syringaldehyde, vanillic acid, syringic acid, protocatechuic acid, p-hydroxybenzaldehyde, p-hydroxybenzoic acid is lost. A host having no ability or low metabolic ability is used, and a typical example thereof is Pseudomonas putida PpY1100.
形質転換体の選択は、用いたプラスミドの選択マーカー、例えば形質転換体のDNA組換えにより獲得する薬剤耐性を指標にすることができる。薬剤耐性マーカーとしては、例えば、カナマイシン耐性遺伝子、アンピシリン耐性遺伝子、テトラサイクリン耐性遺伝子等が挙げられる。これらの形質転換体の中から目的の組換えベクターを含有する形質転換体の選択は、例えば遺伝子の部分的なDNA断片をプローブとして用いたコロニーハイブリダイゼーション法により行うのが好ましい。プローブの標識としては、例えば放射性同位元素、ジゴキシゲニン、酵素等を用いることができる。 Selection of transformants can be based on the selection marker of the plasmid used, for example, drug resistance acquired by DNA recombination of the transformant. Examples of drug resistance markers include kanamycin resistance gene, ampicillin resistance gene, tetracycline resistance gene and the like. Among these transformants, selection of a transformant containing the target recombinant vector is preferably performed, for example, by a colony hybridization method using a partial DNA fragment of a gene as a probe. As a probe label, for example, a radioisotope, digoxigenin, an enzyme, or the like can be used.
得られた形質転換体は、糖類の他、窒素源、金属塩、ミネラル、ビタミン等を含む培地を用いて適当な条件下で培養すればよい。培地のpHは、形質転換体が生育し得る範囲のpHであればよく、pH 6〜8程度に調整するのが好適である。培養は、好気的条件下で、15〜40℃、好ましくは28〜37℃で2〜7日間振盪又は通気攪拌培養すればよい。 What is necessary is just to culture the obtained transformant on suitable conditions using the culture medium containing nitrogen source, a metal salt, a mineral, a vitamin, etc. other than saccharides. The pH of the medium may be in a range where the transformant can grow, and is preferably adjusted to about pH 6-8. The culture may be carried out under aerobic conditions at 15 to 40 ° C., preferably 28 to 37 ° C. for 2 to 7 days with shaking or aeration and stirring.
本発明の製造法によって得られるPDCは、生分解性のプラスチック材料、化学製品材料等として利用できる。 The PDC obtained by the production method of the present invention can be used as a biodegradable plastic material, chemical product material or the like.
次に実施例を挙げて本発明を詳細に説明するが、本発明はこれら実施例に何ら限定されるものではない。 EXAMPLES Next, although an Example is given and this invention is demonstrated in detail, this invention is not limited to these Examples at all.
実施例1
1.1 FerBA遺伝子の獲得及びPDC生産のための組換えプラスミドpJBDZおよびpJBV2Zの作製
FerBA遺伝子配列は既知配列であり、スフィンゴビウム・パウシモビリス(S. paucimobilis )SYK-6株に由来し、Accession Number: AB072376で登録されている(Applied and Environmental Microbiology, 68 (9), pp. 4416-4424(2002)。FerBAを含む3.6-kb断片並びにFerB及びFerAそれぞれのアミノ酸配列を図2及び図3に示す。
Example 1
1.1 Recombinant plasmids pJBDZ and pJBV2Z for FerBA gene acquisition and PDC production
The FerBA gene sequence is a known sequence and is derived from S. paucimobilis SYK-6 strain and registered under Accession Number: AB072376 (Applied and Environmental Microbiology, 68 (9), pp. 4416 -4424 (2002) The 3.6-kb fragment containing FerBA and the amino acid sequences of FerB and FerA are shown in FIGS.
FerBA遺伝子を図4に記載のとおりにして、制限酵素処理、末端の平滑化、末端の脱リン酸化、を適宜行い連結した。なお、各遺伝子はLacZ のαフラグメントとインフレームで接続されLac promoterごと切り出され、連結された。詳しくは、以下のとおりにして組換えプラスミドを作製した。 The FerBA gene was ligated by appropriate restriction enzyme treatment, terminal blunting, and terminal dephosphorylation as described in FIG. Each gene was connected in-frame with the LacZ α fragment, excised together with the Lac promoter, and ligated. Specifically, a recombinant plasmid was prepared as follows.
1.2 FerBAを含むpJFABの作成
Applied and Environmental Microbiology, 68 (9), pp. 4416-4424(2002)に記載のとおりにして作製したFerBAを含むプラスミドpKHR201を制限酵素VspI及びBamHIにより切断した後末端平滑化によって得られるFerBAを含むDNA断片(3.6 kb)と、pJB866(U82001)を制限酵素BamHIにより切断した後末端平滑化によって得られるDNA断片とを、T4DNAリガーゼ(ロッシュ製)により結合させることにより、組み換えプラスミドpJFABを作製した(図4)。
1.3 DesZを含むpBSDZの作成
Journal of Bacteriology, 186 (15), pp. 4951-4959(2004)に記載のとおりにして作製したpBX2FからDesZを含む2.7-kb SalI-XhoI断片をpBluescriptIIKS(+)のSalI-XhoIに挿入し、組み換えプラスミドpBXSA1を作製した。pBXSA1を制限酵素SmaI及びSphIにより切断した後末端平滑化によって得られるDNA断片(1.7 kb)と、pBluescriptIISK(+)を制限酵素NotIにより切断した後末端平滑化によって得られるDNA断片とを、T4DNAリガーゼ(ロッシュ製)により結合させることにより、組み換えプラスミドpBSDZを作製した(図4)。
1.4 FerBA及びDesZを含むpJFDZの作成
上記pJFABを制限酵素HindIIIにより切断した後末端平滑化によって得られるDNA断片と、上記pBSDZを制限酵素VspI及びXbaIにより切断した後末端平滑化によって得られるDNA断片とを、T4DNAリガーゼ(ロッシュ製)により結合させることにより、組み換えプラスミドpJFDZを作製した(図4)。
1.2 Creation of pJFAB including FerBA
Contains FerBA obtained by digestion of plasmid pKHR201 containing FerBA prepared as described in Applied and Environmental Microbiology, 68 (9), pp. 4416-4424 (2002) with restriction enzymes VspI and BamHI, followed by end blunting A DNA fragment (3.6 kb) and a DNA fragment obtained by cleaving pJB866 (U82001) with restriction enzyme BamHI and then blunting the ends were ligated with T4 DNA ligase (manufactured by Roche) to prepare recombinant plasmid pJFAB ( FIG. 4).
1.3 Creating pBSDZ including DesZ
Inserting a 2.7-kb SalI-XhoI fragment containing DesZ from pBX2F prepared as described in Journal of Bacteriology, 186 (15), pp. 4951-4959 (2004) into SalI-XhoI of pBluescriptIIKS (+), A recombinant plasmid pBXSA1 was prepared. A DNA fragment (1.7 kb) obtained by cleaving pBXSA1 with restriction enzymes SmaI and SphI and then blunting the ends, and a DNA fragment obtained by cleaving pBluescriptIISK (+) with restriction enzyme NotI and then blunting the ends, T4 DNA ligase Recombinant plasmid pBSDZ was prepared by binding with (Roche) (FIG. 4).
1.4 Preparation of pJFDZ containing FerBA and DesZ A DNA fragment obtained by cutting the above pJFAB with restriction enzyme HindIII and then blunting the ends, and a DNA fragment obtained by cutting the above pBSDZ with restriction enzymes VspI and XbaI and then blunting the ends The fragment was ligated with T4 DNA ligase (Roche) to produce a recombinant plasmid pJFDZ (FIG. 4).
1.5 LigV2を含むpSKL2ifの作成
LigV2を含むpSKL2ifは特願2009-221306に記載のとおりにして作成した。簡単には、配列番号5で示すLigV2遺伝子を以下のプライマー:
uni-primer:5’-GGCGCTGAAGTCCGCCGC-3’ (配列番号29)
rev-primer:5’-CTGCAGGCCTATCTCGAGAC-3’ (配列番号30)
を用いて、PCR法により増幅させた。塩基配列を有するアルデヒドデヒドロゲナーゼ遺伝子LigV2を含む1.7kbのBamHI-PstI遺伝子断片をpBluescriptIIKS(+)のBamHI-PstIに挿入し、組み換えプラスミドpSKL2ifを作製した(図4)。PCRの反応条件は、94℃で30秒間(変性)、55℃で30秒〜1分間(アニーリング)、72℃で2分間(伸長)から成る反応工程を1サイクルとして、30サイクル行った後、72℃で7分間反応させた。LigV2遺伝子を配列番号5に、アミノ酸配列を配列番号6に示す。増幅したLigV2遺伝子をpBluescriptIISK(+)のMCSに挿入し、組み換えプラスミドpSKL2ifを作製した(図4)。
1.6 FerBA、DesZ及びLigV2を含むpJFV2Zの作成
次いで、pJFDZを制限酵素NotIにより切断した後末端平滑化によって得られるDNA断片と、pSKL2ifを制限酵素VspI及びSalIにより切断した後末端平滑化によって得られるDNA断片とを、T4DNAリガーゼ(ロッシュ製)により結合させることにより、組み換えプラスミドpJFV2Zを作製した(図4)。
1.5 Creation of pSKL2if including LigV2
PSKL2if containing LigV2 was prepared as described in Japanese Patent Application No. 2009-221306. Briefly, the LigV2 gene shown in SEQ ID NO: 5 is converted into the following primers:
uni-primer: 5'-GGCGCTGAAGTCCGCCGC-3 '(SEQ ID NO: 29)
rev-primer: 5'-CTGCAGGCCTATCTCGAGAC-3 '(SEQ ID NO: 30)
Was amplified by the PCR method. A 1.7 kb BamHI-PstI gene fragment containing the aldehyde dehydrogenase gene LigV2 having a base sequence was inserted into BamHI-PstI of pBluescriptIIKS (+) to prepare a recombinant plasmid pSKL2if (FIG. 4). PCR reaction conditions were as follows: 30 cycles of 94 ° C. for 30 seconds (denaturation), 55 ° C. for 30 seconds to 1 minute (annealing), 72 ° C. for 2 minutes (extension). The reaction was carried out at 72 ° C. for 7 minutes. The LigV2 gene is shown in SEQ ID NO: 5, and the amino acid sequence is shown in SEQ ID NO: 6. The amplified LigV2 gene was inserted into the MCS of pBluescriptIISK (+) to prepare a recombinant plasmid pSKL2if (FIG. 4).
1.6 Preparation of pJFV2Z containing FerBA, DesZ and LigV2 Next, pJFDZ was cleaved with restriction enzyme NotI and then subjected to end blunting, and pSKL2if was cleaved with restriction enzymes VspI and SalI followed by end blunting. The resulting DNA fragment was ligated with T4 DNA ligase (Roche) to produce a recombinant plasmid pJFV2Z (FIG. 4).
1.7 VanA, VanB, PobA, LigV, LigA,B,Cを含むpVaPoLigVABCの作成
PobA遺伝子を以下のプライマー:
uni-primer:5’-TCGAGCAATGGCAAACCCTAACAGCAGATG-3' (配列番号31)
rev-primer:5’-CTAGAGGCTTGGTGAAAAACGCCTGACCCG-3' (配列番号32)
を用いて、PCR法により増幅させた。PCRの反応条件は、94℃で30秒間(変性)、55℃で30秒〜1分間(アニーリング)、72℃で2分間(伸長)から成る反応工程を1サイクルとして、30サイクル行った後、72℃で7分間反応させた。PobA遺伝子を配列番号20に、アミノ酸配列を配列番号21に示す。
1.7 Creation of pVaPoLigVABC including VanA, VanB, PobA, LigV, LigA, B, C
The following primers for the PobA gene:
uni-primer: 5'-TCGAGCAATGGCAAACCCTAACAGCAGATG-3 '(SEQ ID NO: 31)
rev-primer: 5'-CTAGAGGCTTGGTGAAAAACGCCTGACCCG-3 '(SEQ ID NO: 32)
Was amplified by the PCR method. PCR reaction conditions were as follows: 30 cycles of 94 ° C. for 30 seconds (denaturation), 55 ° C. for 30 seconds to 1 minute (annealing), 72 ° C. for 2 minutes (extension), and 30 cycles. The reaction was carried out at 72 ° C. for 7 minutes. The PobA gene is shown in SEQ ID NO: 20, and the amino acid sequence is shown in SEQ ID NO: 21.
増幅したPobA遺伝子をpBluescriptIISK(+)のMCSに挿入し、組み換えプラスミドpPobAを作製した。特開2005‐278549号公報の図16に記載のプラスミドpULVを制限酵素Vsp I及びHindIIIにより切断した後に末端を平滑化して得られるDNA断片と、pPobAを制限酵素HindIIIによって切断した後に末端を平滑化して得られるDNA断片とを、T4DNAリガーゼにより結合させることにより、組換えベクターpPobALigVを作製した。次いで、特開2005−278549号公報に記載のpKTVLABCを制限酵素Xba Iによって部分消化した後に末端を平滑化して得られるDNA断片をセルフライゲーションし、LigABC下流のXba Iサイトを欠損させて(サイトデリーション)、組換えベクターpDVZ21Xを作製した。pDVZ21Xを制限酵素Xba Iによって部分消化した後に末端を平滑化して得られるDNA断片と、前記の組換えベクターpPobALigVとを制限酵素Vsp I及びXho Iにより切断した後に末端を平滑化して得られるDNA断片とを、T4DNAリガーゼにより結合させることにより、組換えベクターpVaPoLigVABCを作製した。 The amplified PobA gene was inserted into MCS of pBluescriptIISK (+) to prepare a recombinant plasmid pPobA. A DNA fragment obtained by cutting the plasmid pULV described in FIG. 16 of JP-A-2005-278549 with restriction enzymes Vsp I and HindIII and then blunting the ends, and after cutting pPobA with the restriction enzyme HindIII and blunting the ends. The recombinant DNA pPobALigV was prepared by ligating the obtained DNA fragment with T4 DNA ligase. Next, a DNA fragment obtained by partially digesting pKTVLABC described in JP-A-2005-278549 with the restriction enzyme Xba I and then blunting the ends was self-ligated, and the Xba I site downstream of LigABC was deleted (site deletion). The recombinant vector pDVZ21X was prepared. DNA fragment obtained by partially digesting pDVZ21X with restriction enzyme Xba I and then blunting the ends, and DNA fragment obtained by cutting the recombinant vector pPobALigV with restriction enzymes Vsp I and Xho I and then blunting the ends Were combined with T4DNA ligase to prepare a recombinant vector pVaPoLigVABC.
1.8 宿主への遺伝子の導入
植物成分由来、化学合成もしくは石油由来のバニリン、シリンガアルデヒド、バニリン酸、シリンガ酸、プロトカテク酸のいずれかからの分解代謝酵素機能、及び2−ピロン−4,6−ジカルボン酸に対する分解酵素機能を消失せしめた微生物であるシュードモナス属細菌(Pseudomonas putida PpY1100)を、LB液体培地500mlで、28℃23時間培養し氷中で30分冷却した。4℃10分10000rpmで遠心集菌し、500mlの0℃蒸留水で温和に洗浄後再び遠心集菌した。続いて250mlの0℃蒸留水で温和に洗浄後、遠心集菌した。さらに125mlの0℃蒸留水で温和に洗浄後、遠心集菌した。集菌した微生物細胞を、10%グリセロールを含む蒸留水に懸濁し0℃にて保持した。
1.8 Introduction of gene into host Degradative metabolic enzyme function from plant component-derived, chemically synthesized or petroleum-derived vanillin, syringaldehyde, vanillic acid, syringic acid, protocatechuic acid, and 2-pyrone-4, Pseudomonas bacterium (Pseudomonas putida PpY1100), a microorganism that has lost the function of degrading enzyme for 6-dicarboxylic acid, was cultured in LB liquid medium 500 ml at 28 ° C. for 23 hours and cooled in ice for 30 minutes. The cells were collected by centrifugation at 10000 rpm at 4 ° C. for 10 minutes, washed gently with 500 ml of 0 ° C. distilled water, and then collected again by centrifugation. Subsequently, the cells were gently washed with 250 ml of 0 ° C. distilled water and then collected by centrifugation. Further, the cells were gently washed with 125 ml of 0 ° C. distilled water and collected by centrifugation. The collected microbial cells were suspended in distilled water containing 10% glycerol and kept at 0 ° C.
1.2で構築したプラスミドpJFABを上記株に導入し、PpY1100-FAB株と命名した。別に、pJFABと1.7で構築したプラスミドpVaPoLigVABCを上記株に導入し、PpY1100-FABplus株と命名した。さらに別に、1.6で構築したプラスミドpJFV2ZとpVaPoLigVABCを上記株に導入し、PpY1100-FV2Zplus株と命名した。 The plasmid pJFAB constructed in 1.2 was introduced into the above strain and named PpY1100-FAB strain. Separately, pJFAB and the plasmid pVaPoLigVABC constructed in 1.7 were introduced into the above strain and named PpY1100-FABplus strain. Separately, plasmids pJFV2Z and pVaPoLigVABC constructed in 1.6 were introduced into the above strain and named PpY1100-FV2Zplus strain.
実施例2
シュードモナス属細菌(Pseudomonas putida PpY1100)にPDC発酵生産プラスミドpJFABとpVaPoLigVABCを導入した形質転換細胞によりフェルラ酸からPDCの製造に関する実施例(5リットルの培養液での変換試験)
(1)PDCを発酵生産するための多段反応プロセスの酵素遺伝子を含む組み換えプラスミドpJFABを大腸菌JM109株に形質転換し、25 mg/Lのテトラサイクリンを含むLB培地(10ml)で、37℃で18時間振とう培養し、増殖した培養細胞から組み換えプラスミドpJFABを抽出した。また、組み換えプラスミドpVaPoLigVABCを大腸菌JM109株に形質転換し、25 mg/Lのカナマイシンを含むLB培地(10ml)で、37℃で18時間振とう培養し、増殖した培養細胞から組み換えプラスミドpVaPoLigVABCを抽出した。
(2)PDC代謝能を消失せしめた微生物であるシュードモナス属細菌(Pseudomonas putida PpY1100)を、LB液体培地200mlで、28℃ 24時間培養し氷中で30分冷却した。4℃ 10分10000rpmで遠心集菌し、200mlの0℃蒸留水で温和に洗浄後再び遠心集菌した。続いて150mlの0℃蒸留水で温和に洗浄後、遠心集菌した。さらに100mlの0℃蒸留水で温和に洗浄後、遠心集菌した。集菌した微生物細胞を、10%グリセロールを含む蒸留水に懸濁し0℃にて保持した。
(3)(1)のプラスミドpJFABとpVaPoLigVABCを約0.05μgを含む蒸留水4μlを0.2cmのキュベットに入れ、(2)の10%グリセロールを含む蒸留水に懸濁した細胞液40μlを加え、(25μF、2500V、12msec)の条件でエレクトロポレーションにかけた。
(4)上記処理した細胞全量を10mlのLB液体培地に接種し、28℃で6時間培養した。培養後遠心によって菌体を集め25 mg/Lのカナマイシン、テトラサイクリンを含むLB平板に塗布し28℃で48時間培養し、プラスミドpJFABとpVaPoLigVABCを保持するカナマイシン、テトラサイクリン耐性を示す形質転換株を得た。本菌をPseudomonas putida PpY1100-FABplus株と名づけた。
(5)PpY1100-FABplus株を、200mlのLB液体培地(25 mg/Lのカナマイシン、テトラサイクリンを含む)に接種し28℃で16時間培養し前培養菌体懸濁液とした。5 LのLB液体培地及び消泡剤(Antiform A) 3 mlを10 L容量のジャーファーメンター(発酵槽)を用いて調製し、そこに培養したPpY1100-FABplus株の前培養菌体懸濁液50mlを混合し、28℃ 700 rpm/minの通気攪拌下、OD660=10〜14まで培養した(10時間〜12時間)。
(6)OD660=10〜14に達した発酵槽の培養液に、基質であるフェルラ酸25 gを含む0.1NのNaOH水溶液(pH8.0に調整)500mlを、ペリスタポンプを用いて10時間かけて添加した。反応の進行に伴う2−ピロン−4,6−ジカルボン酸の生成により、培養液のpHが低下する。それを防ぐためpHセンサーに連結したペリスタポンプで5NのNaOH溶液を添加して培養液のpHを維持した。
反応の進行はThin Layer Chromatography(TLC)によって確認した。図5に示す様に、添加したフェルラ酸は基質添加36時間で殆ど消失することが確認された。反応液中の2−ピロン−4,6−ジカルボン酸定量の結果は図6に示すように約21.5mM(収率95.1%)検出された。
(7)反応終了後、発酵槽の培地をプラスチック容器(バケツ)に移した。培養液から遠心分離(6000rpm、20℃)により菌体成分を沈殿除去し、得られた上清に塩酸を加えpH3.5にし低温で保存した。2−ピロン−4,6−ジカルボン酸は、特開2008-79603号公報に示す方法に従い精製し高純度のPDCを得た。
Example 2
Example of PDC production from ferulic acid by transformed cells with PDC fermentation production plasmids pJFAB and pVaPoLigVABC introduced into Pseudomonas bacterium ( Pseudomonas putida PpY1100) (conversion test in 5 liter culture medium)
(1) Recombinant plasmid pJFAB containing the enzyme gene of multistage reaction process for fermentative production of PDC was transformed into E. coli strain JM109, and LB medium (10 ml) containing 25 mg / L tetracycline for 18 hours at 37 ° C The recombinant plasmid pJFAB was extracted from the cultured cells grown by shaking and grown. In addition, the recombinant plasmid pVaPoLigVABC was transformed into E. coli strain JM109, cultured in LB medium (10 ml) containing 25 mg / L kanamycin for 18 hours at 37 ° C., and the recombinant plasmid pVaPoLigVABC was extracted from the grown cultured cells. .
(2) Pseudomonas bacteria ( Pseudomonas putida PpY1100), a microorganism that has lost its ability to metabolize PDC, was cultured in 200 ml of LB liquid medium at 28 ° C. for 24 hours and cooled in ice for 30 minutes. The cells were collected by centrifugation at 10000 rpm at 4 ° C. for 10 minutes, washed gently with 200 ml of 0 ° C. distilled water and then collected again by centrifugation. Subsequently, the cells were gently washed with 150 ml of 0 ° C. distilled water and collected by centrifugation. Further, after gentle washing with 100 ml of 0 ° C. distilled water, the cells were collected by centrifugation. The collected microbial cells were suspended in distilled water containing 10% glycerol and kept at 0 ° C.
(3) Place 4 μl of distilled water containing about 0.05 μg of the plasmid pJFAB and pVaPoLigVABC of (1) in a 0.2 cm cuvette, add 40 μl of cell suspension suspended in distilled water containing 10% glycerol of (2), ( 25 μF, 2500 V, 12 msec).
(4) The total amount of the treated cells was inoculated into 10 ml of LB liquid medium and cultured at 28 ° C. for 6 hours. After incubation, the cells were collected by centrifugation and applied to an LB plate containing 25 mg / L of kanamycin and tetracycline, and cultured at 28 ° C. for 48 hours to obtain a kanamycin- and tetracycline-resistant transformant carrying plasmids pJFAB and pVaPoLigVABC. . This bacterium was named Pseudomonas putida PpY1100-FABplus strain.
(5) The PpY1100-FABplus strain was inoculated into 200 ml of LB liquid medium (containing 25 mg / L kanamycin and tetracycline) and cultured at 28 ° C. for 16 hours to obtain a precultured cell suspension. Pre-cultured cell suspension of PpY1100-FABplus strain prepared with 3 L of 5 L LB liquid medium and antifoaming agent (Antiform A) using 10 L capacity jar fermenter (fermentor) 50 ml was mixed and cultured at 28 ° C. under aeration and agitation at 700 rpm / min until OD 660 = 10 to 14 (10 to 12 hours).
(6) To the culture solution of the fermenter that reached OD 660 = 10-14, 500 ml of 0.1N NaOH aqueous solution (adjusted to pH 8.0) containing 25 g of ferulic acid as a substrate was added for 10 hours using a peristaltic pump. Added. Due to the production of 2-pyrone-4,6-dicarboxylic acid as the reaction proceeds, the pH of the culture solution decreases. To prevent this, a 5N NaOH solution was added with a peristaltic pump connected to a pH sensor to maintain the pH of the culture solution.
The progress of the reaction was confirmed by thin layer chromatography (TLC). As shown in FIG. 5, it was confirmed that the added ferulic acid almost disappeared after 36 hours of substrate addition. As a result of quantification of 2-pyrone-4,6-dicarboxylic acid in the reaction solution, about 21.5 mM (yield 95.1%) was detected as shown in FIG.
(7) After completion of the reaction, the culture medium in the fermenter was transferred to a plastic container (bucket). The bacterial cell components were precipitated and removed from the culture by centrifugation (6000 rpm, 20 ° C.), and hydrochloric acid was added to the resulting supernatant to adjust the pH to 3.5 and stored at a low temperature. 2-pyrone-4,6-dicarboxylic acid was purified according to the method shown in JP-A-2008-79603 to obtain high-purity PDC.
実施例3
シュードモナス属細菌(Pseudomonas putida PpY1100)にPDC発酵生産プラスミドpJFV2ZとpVaPoLigVABCを導入した形質転換細胞によりp-クマル酸からPDCの製造に関する実施例
(1)PDCを発酵生産するための多段反応プロセスの酵素遺伝子を含む組み換えプラスミドpJFV2Zを大腸菌JM109株に形質転換し、25 mg/Lのテトラサイクリンを含むLB培地(10ml)で、37℃で18時間振とう培養し、増殖した培養細胞から組み換えプラスミドpJFV2Zを抽出した。また、組み換えプラスミドpVaPoLigVABCを大腸菌JM109株に形質転換し、25 mg/Lのカナマイシンを含むLB培地(10ml)で、37℃で18時間振とう培養し、増殖した培養細胞から組み換えプラスミドpVaPoLigVABCを抽出した。
(2)植物成分由来、化学合成もしくは石油由来のバニリン、シリンガアルデヒド、バニリン酸、シリンガ酸、プロトカテク酸、p-ヒドロキシベンズアルデヒド、p-ヒドロキシ安息香酸の分解代謝酵素機能を消失せしめた微生物であるシュードモナス属細菌(Pseudomonas putida PpY1100)を、LB液体培地200mlで、28℃ 24時間培養し氷中で30分冷却した。4℃ 10分10000rpmで遠心集菌し、200mlの0℃蒸留水で温和に洗浄後再び遠心集菌した。続いて150mlの0℃蒸留水で温和に洗浄後、遠心集菌した。さらに100mlの0℃蒸留水で温和に洗浄後、遠心集菌した。集菌した微生物細胞を、10%グリセロールを含む蒸留水に懸濁し0℃にて保持した。
(3)(1)のプラスミドpJFV2ZとpVaPoLigVABCを約0.05μgを含む蒸留水4μlを0.2cmのキュベットに入れ、(2)の10%グリセロールを含む蒸留水に懸濁した細胞液40μlを加え、(25μF、2500V、12msec)の条件でエレクトロポレーションにかけた。
(4)上記処理した細胞全量を10mlのLB液体培地に接種し、28℃で6時間培養した。培養後遠心によって菌体を集め25 mg/Lのカナマイシン、テトラサイクリンを含むLB平板に塗布し28℃で48時間培養し、プラスミドpJFV2ZとpVaPoLigVABCを保持するカナマイシン、テトラサイクリン耐性を示す形質転換株を得た。本菌をPseudomonas putida PpY1100-FV2Zplus株と名づけた。
(5)PpY1100-FV2Zplus株を、200mlのLB液体培地(25 mg/Lのカナマイシン、テトラサイクリンを含む)に接種し28℃で16時間培養し前培養菌体懸濁液とした。5 LのLB液体培地及び消泡剤(Antiform A) 3 mlを10 L容量のジャーファーメンター(発酵槽)を用いて調製し、そこに培養したPpY1100-FV2Zplus株の前培養菌体懸濁液50mlを混合し、28℃ 700 rpm/minの通気攪拌下、OD660=10〜14まで培養した(10時間〜12時間)。
(6)OD660=10〜14に達した発酵槽の培養液に、基質であるp-クマル酸25 gを含む0.1NのNaOH水溶液(pH8.0に調整)500mlを、ペリスタポンプを用いて10時間かけて添加した。反応の進行に伴う2−ピロン−4,6−ジカルボン酸の生成により、培養液のpHが低下する。それを防ぐためpHセンサーに連結したペリスタポンプで5NのNaOH溶液を添加して培養液のpHを維持した。
反応の進行はThin Layer Chromatography(TLC)によって確認した。図7に示す様に、添加したp-クマル酸は基質添加終了時に殆ど消失することが確認された。反応液中の2−ピロンー4,6−ジカルボン酸定量の結果は図8に示すように約27.4mM(収率90.1%)検出された。
(7)反応終了後、発酵槽の培地をプラスチック容器(バケツ)に移した。培養液から遠心分離(6000rpm、20℃)により菌体成分を沈殿除去し、得られた上清に塩酸を加えpH3.5にし低温で保存した。2−ピロン−4,6−ジカルボン酸は、特開2008-79603号公報に示す方法に従い精製し高純度のPDCを得た。
Example 3
Example of PDC production from p-coumaric acid by transformed cells introduced with PDC fermentation production plasmids pJFV2Z and pVaPoLigVABC into Pseudomonas bacterium ( Pseudomonas putida PpY1100) (1) Enzyme gene of multi-stage reaction process for fermentation production of PDC Recombinant plasmid pJFV2Z containing Escherichia coli was transformed into E. coli strain JM109, cultured in LB medium (10 ml) containing 25 mg / L tetracycline with shaking at 37 ° C. for 18 hours, and recombinant plasmid pJFV2Z was extracted from the grown cultured cells . In addition, the recombinant plasmid pVaPoLigVABC was transformed into E. coli strain JM109, cultured in LB medium (10 ml) containing 25 mg / L kanamycin for 18 hours at 37 ° C., and the recombinant plasmid pVaPoLigVABC was extracted from the grown cultured cells. .
(2) Microorganisms that have lost the functions of plant components-derived, chemically synthesized or petroleum-derived vanillin, syringaldehyde, vanillic acid, syringic acid, protocatechuic acid, p-hydroxybenzaldehyde, and p-hydroxybenzoic acid. Pseudomonas bacteria ( Pseudomonas putida PpY1100) were cultured in 200 ml of LB liquid medium at 28 ° C. for 24 hours and cooled in ice for 30 minutes. The cells were collected by centrifugation at 10000 rpm at 4 ° C. for 10 minutes, washed gently with 200 ml of 0 ° C. distilled water and then collected again by centrifugation. Subsequently, the cells were gently washed with 150 ml of 0 ° C. distilled water and collected by centrifugation. Further, after gentle washing with 100 ml of 0 ° C. distilled water, the cells were collected by centrifugation. The collected microbial cells were suspended in distilled water containing 10% glycerol and kept at 0 ° C.
(3) Put 4 μl of distilled water containing about 0.05 μg of the plasmid pJFV2Z and pVaPoLigVABC of (1) into a 0.2 cm cuvette, add 40 μl of the cell solution suspended in distilled water containing 10% glycerol of (2), ( 25 μF, 2500 V, 12 msec).
(4) The total amount of the treated cells was inoculated into 10 ml of LB liquid medium and cultured at 28 ° C. for 6 hours. After incubation, the cells were collected by centrifugation and applied to an LB plate containing 25 mg / L kanamycin and tetracycline, and cultured at 28 ° C. for 48 hours to obtain a kanamycin- and tetracycline-resistant transformant carrying the plasmids pJFV2Z and pVaPoLigVABC. . This bacterium was named Pseudomonas putida PpY1100-FV2Zplus strain.
(5) The PpY1100-FV2Zplus strain was inoculated into 200 ml of LB liquid medium (containing 25 mg / L kanamycin and tetracycline) and cultured at 28 ° C. for 16 hours to obtain a precultured cell suspension. Pre-cultured suspension of PpY1100-FV2Zplus strain prepared with 3 L of 5 L LB liquid medium and antifoam (Antiform A) using 10 L jar fermenter (fermentor) 50 ml was mixed and cultured at 28 ° C. under aeration and agitation at 700 rpm / min until OD 660 = 10 to 14 (10 to 12 hours).
(6) 500 ml of 0.1N NaOH aqueous solution (adjusted to pH 8.0) containing 25 g of substrate p-coumaric acid was added to the culture solution of the fermenter that reached OD 660 = 10-14 using a peristaltic pump. Added over time. Due to the production of 2-pyrone-4,6-dicarboxylic acid as the reaction proceeds, the pH of the culture solution decreases. To prevent this, a 5N NaOH solution was added with a peristaltic pump connected to a pH sensor to maintain the pH of the culture solution.
The progress of the reaction was confirmed by thin layer chromatography (TLC). As shown in FIG. 7, it was confirmed that the added p-coumaric acid almost disappeared at the end of the substrate addition. As a result of quantification of 2-pyrone-4,6-dicarboxylic acid in the reaction solution, about 27.4 mM (yield 90.1%) was detected as shown in FIG.
(7) After completion of the reaction, the culture medium in the fermenter was transferred to a plastic container (bucket). The bacterial cell components were precipitated and removed from the culture by centrifugation (6000 rpm, 20 ° C.), and hydrochloric acid was added to the resulting supernatant to adjust the pH to 3.5 and stored at a low temperature. 2-pyrone-4,6-dicarboxylic acid was purified according to the method shown in JP-A-2008-79603 to obtain high-purity PDC.
実施例4
シュードモナス属細菌(Pseudomonas putida PpY1100)にPDC発酵生産プラスミドpJFV2ZとpVaPoLigVABCを導入した形質転換細胞によりシナピン酸からPDCの製造に関する実施例
(1)PDCを発酵生産するための多段反応プロセスの酵素遺伝子を含む組み換えプラスミドpJFV2Zを大腸菌JM109株に形質転換し、25 mg/Lのテトラサイクリンを含むLB培地(10ml)で、37℃で18時間振とう培養し、増殖した培養細胞から組み換えプラスミドpJFV2Zを抽出した。また、組み換えプラスミドpVaPoLigVABCを大腸菌JM109株に形質転換し、25 mg/Lのカナマイシンを含むLB培地(10ml)で、37℃で18時間振とう培養し、増殖した培養細胞から組み換えプラスミドpVaPoLigVABCを抽出した。
(2)植物成分由来、化学合成もしくは石油由来のバニリン、シリンガアルデヒド、バニリン酸、シリンガ酸、プロトカテク酸、p-ヒドロキシベンズアルデヒド、p-ヒドロキシ安息香酸の分解代謝酵素機能を消失せしめた微生物であるシュードモナス属細菌(Pseudomonas putida PpY1100)を、LB液体培地200mlで、28℃ 24時間培養し氷中で30分冷却した。4℃ 10分10000rpmで遠心集菌し、200mlの0℃蒸留水で温和に洗浄後再び遠心集菌した。続いて150mlの0℃蒸留水で温和に洗浄後、遠心集菌した。さらに100mlの0℃蒸留水で温和に洗浄後、遠心集菌した。集菌した微生物細胞を、10%グリセロールを含む蒸留水に懸濁し0℃にて保持した。
(3)(1)のプラスミドpJFV2ZとpVaPoLigVABCを約0.05μgを含む蒸留水4μlを0.2cmのキュベットに入れ、(2)の10%グリセロールを含む蒸留水に懸濁した細胞液40μlを加え、(25μF、2500V、12msec)の条件でエレクトロポレーションにかけた。
(4)上記処理した細胞全量を10mlのLB液体培地に接種し、28℃で6時間培養した。培養後遠心によって菌体を集め25 mg/Lのカナマイシン、テトラサイクリンを含むLB平板に塗布し28℃で48時間培養し、プラスミドpJFV2ZとpVaPoLigVABCを保持するカナマイシン、テトラサイクリン耐性を示す形質転換株を得た。本菌をPseudomonas putida PpY1100-FV2Zplus株と名づけた。
(5)PpY1100-FV2Zplus株を、200mlのLB液体培地(25 mg/Lのカナマイシン、テトラサイクリンを含む)に接種し28℃で16時間培養し前培養菌体懸濁液とした。5 LのLB液体培地及び消泡剤(Antiform A) 3 mlを10 L容量のジャーファーメンター(発酵槽)を用いて調製し、そこに培養したPpY1100-FV2Zplus株の前培養菌体懸濁液50mlを混合し、28℃ 700 rpm/minの通気攪拌下、OD660=10〜14まで培養した(10時間〜14時間)。
(6)OD660=10〜14に達した発酵槽の培養液に、基質であるシナピン酸25 gを含む0.1NのNaOH水溶液(pH8.0に調整)500mlを、ペリスタポンプを用いて10時間かけて添加した。反応の進行に伴う2−ピロン−4,6−ジカルボン酸の生成により、培養液のpHが低下する。それを防ぐためpHセンサーに連結したペリスタポンプで5NのNaOH溶液を添加して培養液のpHを維持した。
反応の進行はThin Layer Chromatography(TLC)によって確認した。図9に示す様に、添加したシナピン酸は基質添加終了時に殆ど消失することが確認された。反応液中の2−ピロンー4,6−ジカルボン酸定量の結果は図10に示すように約21.3mM(収率95.4%)検出された。
(7)反応終了後、発酵槽の培地をプラスチック容器(バケツ)に移した。培養液から遠心分離(6000rpm、20℃)により菌体成分を沈殿除去し、得られた上清に塩酸を加えpH3.5にし低温で保存した。2−ピロン−4,6−ジカルボン酸は、特開2008-79603号公報に示す方法に従い精製し高純度のPDCを得た。
Example 4
Example of PDC production from sinapinic acid by transformed cells introduced with PDC fermentation production plasmids pJFV2Z and pVaPoLigVABC into Pseudomonas bacterium ( Pseudomonas putida PpY1100) (1) Including enzyme gene of multistage reaction process for fermentation production of PDC Recombinant plasmid pJFV2Z was transformed into Escherichia coli JM109 strain, and cultured with shaking in LB medium (10 ml) containing 25 mg / L tetracycline at 37 ° C. for 18 hours, and recombinant plasmid pJFV2Z was extracted from the grown cultured cells. In addition, the recombinant plasmid pVaPoLigVABC was transformed into E. coli strain JM109, cultured in LB medium (10 ml) containing 25 mg / L kanamycin for 18 hours at 37 ° C., and the recombinant plasmid pVaPoLigVABC was extracted from the grown cultured cells. .
(2) Microorganisms that have lost the functions of plant components-derived, chemically synthesized or petroleum-derived vanillin, syringaldehyde, vanillic acid, syringic acid, protocatechuic acid, p-hydroxybenzaldehyde, and p-hydroxybenzoic acid. Pseudomonas bacterium (Pseudomonas putida PpY1100) was cultured in 200 ml of LB liquid medium at 28 ° C. for 24 hours and cooled in ice for 30 minutes. The cells were collected by centrifugation at 10000 rpm at 4 ° C. for 10 minutes, washed gently with 200 ml of 0 ° C. distilled water and then collected again by centrifugation. Subsequently, the cells were gently washed with 150 ml of 0 ° C. distilled water and collected by centrifugation. Further, after gentle washing with 100 ml of 0 ° C. distilled water, the cells were collected by centrifugation. The collected microbial cells were suspended in distilled water containing 10% glycerol and kept at 0 ° C.
(3) Put 4 μl of distilled water containing about 0.05 μg of the plasmid pJFV2Z and pVaPoLigVABC of (1) into a 0.2 cm cuvette, add 40 μl of the cell solution suspended in distilled water containing 10% glycerol of (2), ( 25 μF, 2500 V, 12 msec).
(4) The total amount of the treated cells was inoculated into 10 ml of LB liquid medium and cultured at 28 ° C. for 6 hours. After incubation, the cells were collected by centrifugation and applied to an LB plate containing 25 mg / L kanamycin and tetracycline, and cultured at 28 ° C. for 48 hours to obtain a kanamycin- and tetracycline-resistant transformant carrying the plasmids pJFV2Z and pVaPoLigVABC. . This bacterium was named Pseudomonas putida PpY1100-FV2Zplus strain.
(5) The PpY1100-FV2Zplus strain was inoculated into 200 ml of LB liquid medium (containing 25 mg / L kanamycin and tetracycline) and cultured at 28 ° C. for 16 hours to obtain a precultured cell suspension. Pre-cultured suspension of PpY1100-FV2Zplus strain prepared with 3 L of 5 L LB liquid medium and antifoam (Antiform A) using 10 L jar fermenter (fermentor) 50 ml was mixed and cultured at 28 ° C. under aeration and agitation at 700 rpm / min until OD 660 = 10 to 14 (10 to 14 hours).
(6) To the culture solution of the fermenter that reached OD 660 = 10-14, 500 ml of 0.1N NaOH aqueous solution (adjusted to pH 8.0) containing 25 g of sinapinic acid as a substrate was added for 10 hours using a peristaltic pump. Added. Due to the production of 2-pyrone-4,6-dicarboxylic acid as the reaction proceeds, the pH of the culture solution decreases. To prevent this, a 5N NaOH solution was added with a peristaltic pump connected to a pH sensor to maintain the pH of the culture solution.
The progress of the reaction was confirmed by thin layer chromatography (TLC). As shown in FIG. 9, it was confirmed that the added sinapinic acid almost disappeared at the end of the substrate addition. As a result of quantification of 2-pyrone-4,6-dicarboxylic acid in the reaction solution, about 21.3 mM (yield 95.4%) was detected as shown in FIG.
(7) After completion of the reaction, the culture medium in the fermenter was transferred to a plastic container (bucket). The bacterial cell components were precipitated and removed from the culture by centrifugation (6000 rpm, 20 ° C.), and hydrochloric acid was added to the resulting supernatant to adjust the pH to 3.5 and stored at a low temperature. 2-pyrone-4,6-dicarboxylic acid was purified according to the method shown in JP-A-2008-79603 to obtain high-purity PDC.
Claims (10)
(a−1)配列番号1記載のフェルロイル CoAシンセターゼ(FerA)遺伝子のDNA分子;
(a−2)配列番号2記載のフェルロイル CoAシンセターゼ(FerA)のアミノ酸配列をコードするDNA分子;
(a−3)配列番号1記載のDNA分子又はその相補配列からなるDNA分子と高ストリンジェントな条件下でハイブリダイズし、且つフェルロイル CoAシンセターゼ(FerA)活性を有するポリペプチドをコードするDNA分子;又は
(a−4)配列番号2記載のアミノ酸配列の1もしくは数個のアミノ酸が欠失、置換及び/又は付加されたアミノ酸配列からなり、且つフェルロイル CoAシンセターゼ(FerA)活性を有するポリペプチドをコードするDNA分子;と
下記(a'−1)〜(a'−4)のDNA分子
(a'−1)配列番号3記載のフェルロイル CoAヒドラターゼ/リアーゼ(FerB)遺伝子のDNA分子;
(a'−2)配列番号4記載のフェルロイル CoAヒドラターゼ/リアーゼ(FerB)のアミノ酸配列をコードするDNA分子;
(a'−3)配列番号3記載のDNA分子又はその相補配列からなるDNA分子と高ストリンジェントな条件下でハイブリダイズし、且つフェルロイル CoAヒドラターゼ/リアーゼ(FerB)活性を有するポリペプチドをコードするDNA分子;又は
(a'−4)配列番号4記載のアミノ酸配列の1もしくは数個のアミノ酸が欠失、置換及び/又は付加されたアミノ酸配列からなり、且つフェルロイル CoAヒドラターゼ/リアーゼ(FerB)活性を有するポリペプチドをコードするDNA分子;
とを含むFerBA遺伝子を含む組換えベクター。 DNA molecules of the following (a-1) to (a-4);
(A-1) a DNA molecule of the feruloyl CoA synthetase (FerA) gene described in SEQ ID NO: 1;
(A-2) a DNA molecule encoding the amino acid sequence of feruloyl CoA synthetase (FerA) described in SEQ ID NO: 2;
(A-3) a DNA molecule that hybridizes with the DNA molecule of SEQ ID NO: 1 or its complementary sequence under highly stringent conditions and encodes a polypeptide having feruloyl CoA synthetase (FerA) activity; Or (a-4) encoding a polypeptide having an amino acid sequence in which one or several amino acids of the amino acid sequence shown in SEQ ID NO: 2 are deleted, substituted and / or added, and having feruloyl CoA synthetase (FerA) activity A DNA molecule of the following (a′-1) to (a′-4): a feruloyl CoA hydratase / lyase (FerB) gene DNA molecule described in SEQ ID NO: 3;
(A′-2) a DNA molecule encoding the amino acid sequence of feruloyl CoA hydratase / lyase (FerB) described in SEQ ID NO: 4;
(A′-3) which encodes a polypeptide that hybridizes with a DNA molecule comprising SEQ ID NO: 3 or a complementary sequence thereof under highly stringent conditions and has feruloyl CoA hydratase / lyase (FerB) activity DNA molecule; or (a′-4) consisting of an amino acid sequence in which one or several amino acids of SEQ ID NO: 4 have been deleted, substituted and / or added, and feruloyl CoA hydratase / lyase (FerB) activity A DNA molecule encoding a polypeptide having
A recombinant vector comprising a FerBA gene comprising
ここで、前記DNA分子群は、(b)LigV2遺伝子、(c)LigV遺伝子、(d)VanA及びVanB遺伝子、(e)LigA遺伝子、(f)LigB遺伝子、(g)LigC遺伝子、(h)DesZ遺伝子及び(i)PobA遺伝子並びにそれらの組み合わせから成る群より選ばれ;
(b)LigV2遺伝子は下記(b−1)〜(b−4)のいずれかのDNA分子であり、
(b−1)配列番号5記載のDNA分子;
(b−2)配列番号6記載のアミノ酸配列をコードするDNA分子;
(b−3)配列番号5記載のDNA分子の変異体;又は
(b−4)配列番号6記載のDNA分子の変異体、
(c)LigV遺伝子は下記(c−1)〜(c−4)のいずれかのDNA分子であり、
(c−1)配列番号7記載のDNA分子;
(c−2)配列番号8記載のアミノ酸配列をコードするDNA分子;
(c−3)配列番号7記載のDNA分子の変異体;又は
(c−4)配列番号8記載のDNA分子の変異体、
(d)VanA及びVanB遺伝子はそれぞれ下記(d−1)〜(d−4)のいずれかのDNA分子であり、
(d−1)配列番号9及び10記載のDNA分子;
(d−2)配列番号11及び12記載のアミノ酸配列をコードするDNA分子;
(d−3)配列番号9及び10記載のDNA分子の変異体;又は
(d−4)配列番号11及び12記載のアミノ酸配列の変異体;
(e)LigA遺伝子は下記(e−1)〜(e−4)のいずれかのDNA分子であり、
(e−1)配列番号13記載のDNA分子;
(e−2)配列番号14記載のアミノ酸配列をコードするDNA分子;
(e−3)配列番号13記載のDNA分子の変異体;又は
(e−4)配列番号14記載のDNA分子の変異体;
(f)LigB遺伝子は下記(f−1)〜(f−4)のいずれかのDNA分子であり、
(f−1)配列番号15記載のDNA分子;
(f−2)配列番号16記載のアミノ酸配列をコードするDNA分子;
(f−3)配列番号15記載のDNA分子の変異体;又は
(f−4)配列番号16記載のDNA分子の変異体;
(g)DNA分子(LigC遺伝子)は下記(g−1)〜(g−4)のいずれかのDNA分子であり、
(g−1)配列番号17記載のDNA分子;
(g−2)配列番号18記載のアミノ酸配列をコードするDNA分子;
(g−3)配列番号17記載のDNA分子の変異体;又は
(g−4)配列番号18記載のDNA分子の変異体;
(h)DesZ遺伝子は下記(h−1)〜(h−4)のいずれかのDNA分子であり、
(h−1)配列番号19記載の3MGA 3,4−ジオキシゲナーゼ(DesZ)遺伝子のDNA分子;
(h−2)配列番号20記載の3MGA 3,4−ジオキシゲナーゼ(DesZ)のアミノ酸配列をコードするDNA分子;
(h−3)配列番号19記載のDNA分子の変異体;又は
(h−4)配列番号20記載のDNA分子の変異体;
(i)PobAは下記(i−1)〜(i−4)のいずれかのDNA分子であり、
(i−1)配列番号21記載のDNA分子;
(i−2)配列番号22記載のアミノ酸配列をコードするDNA分子;
(i−3)配列番号21記載のDNA分子の変異体;又は
(i−4)配列番号22記載のDNA分子の変異体。 The recombinant vector according to claim 1, further comprising the following DNA molecule group:
Here, the DNA molecule group includes (b) LigV2 gene, (c) LigV gene, (d) VanA and VanB gene, (e) LigA gene, (f) LigB gene, (g) LigC gene, (h) Selected from the group consisting of the DesZ gene and (i) the PobA gene and combinations thereof;
(B) The LigV2 gene is any one of the following DNA molecules (b-1) to (b-4):
(B-1) the DNA molecule set forth in SEQ ID NO: 5;
(B-2) a DNA molecule encoding the amino acid sequence set forth in SEQ ID NO: 6;
(B-3) a mutant of the DNA molecule described in SEQ ID NO: 5; or (b-4) a mutant of the DNA molecule described in SEQ ID NO: 6,
(C) The LigV gene is any of the following DNA molecules (c-1) to (c-4):
(C-1) a DNA molecule described in SEQ ID NO: 7;
(C-2) a DNA molecule encoding the amino acid sequence set forth in SEQ ID NO: 8;
(C-3) a mutant of the DNA molecule described in SEQ ID NO: 7; or (c-4) a mutant of the DNA molecule described in SEQ ID NO: 8,
(D) Each of the VanA and VanB genes is a DNA molecule of any one of (d-1) to (d-4) below,
(D-1) DNA molecules described in SEQ ID NOs: 9 and 10;
(D-2) a DNA molecule encoding the amino acid sequence of SEQ ID NOS: 11 and 12;
(D-3) a variant of the DNA molecule described in SEQ ID NOs: 9 and 10; or (d-4) a variant of the amino acid sequence described in SEQ ID NOs: 11 and 12;
(E) The LigA gene is any of the following DNA molecules (e-1) to (e-4):
(E-1) the DNA molecule set forth in SEQ ID NO: 13;
(E-2) a DNA molecule encoding the amino acid sequence set forth in SEQ ID NO: 14;
(E-3) a mutant of the DNA molecule described in SEQ ID NO: 13; or (e-4) a mutant of the DNA molecule described in SEQ ID NO: 14;
(F) The LigB gene is any one of the following DNA molecules (f-1) to (f-4):
(F-1) the DNA molecule set forth in SEQ ID NO: 15;
(F-2) a DNA molecule encoding the amino acid sequence set forth in SEQ ID NO: 16;
(F-3) a mutant of the DNA molecule described in SEQ ID NO: 15; or (f-4) a mutant of the DNA molecule described in SEQ ID NO: 16;
(G) The DNA molecule (LigC gene) is any one of the following (g-1) to (g-4) DNA molecules,
(G-1) the DNA molecule set forth in SEQ ID NO: 17;
(G-2) a DNA molecule encoding the amino acid sequence set forth in SEQ ID NO: 18;
(G-3) a mutant of the DNA molecule described in SEQ ID NO: 17; or (g-4) a mutant of the DNA molecule described in SEQ ID NO: 18;
(H) The DesZ gene is a DNA molecule of any one of (h-1) to (h-4) below,
(H-1) a DNA molecule of 3MGA 3,4-dioxygenase (DesZ) gene described in SEQ ID NO: 19;
(H-2) a DNA molecule encoding the amino acid sequence of 3MGA 3,4-dioxygenase (DesZ) described in SEQ ID NO: 20;
(H-3) a mutant of the DNA molecule described in SEQ ID NO: 19; or (h-4) a mutant of the DNA molecule described in SEQ ID NO: 20;
(I) PobA is any of the following DNA molecules (i-1) to (i-4):
(I-1) a DNA molecule set forth in SEQ ID NO: 21;
(I-2) a DNA molecule encoding the amino acid sequence set forth in SEQ ID NO: 22;
(I-3) a mutant of the DNA molecule described in SEQ ID NO: 21; or (i-4) a mutant of the DNA molecule described in SEQ ID NO: 22.
ここで、前記DNA分子群は、(j)PmdA遺伝子、(k)PmdB遺伝子、(l)PmdC遺伝子及びその組み合わせから成る群より選ばれ;
(j)PmdA遺伝子は下記(j−1)〜(j−4)のいずれかのDNA分子であり、
(j−1)配列番号23記載のDNA分子;
(j−2)配列番号24記載のアミノ酸配列をコードするDNA分子;
(j−3)配列番号23記載のDNA分子の変異体;又は
(j−4)配列番号24記載のDNA分子の変異体;
(k)PmdB遺伝子は下記(k−1)〜(k−4)のいずれかのDNA分子であり、
(k−1)配列番号25記載のDNA分子;
(k−2)配列番号26記載のアミノ酸配列をコードするDNA分子;
(k−3)配列番号25記載のDNA分子の変異体;又は
(k−4)配列番号26記載のDNA分子の変異体;
(l)DNA分子(PmdC遺伝子)は下記(l−1)〜(l−4)のいずれかのDNA分子であり、
(l−1)配列番号27記載のDNA分子;
(l−2)配列番号28記載のアミノ酸配列をコードするDNA分子;
(l−3)配列番号27記載のDNA分子の変異体;又は
(l−4)配列番号28記載のDNA分子の変異体。 The recombinant vector according to claim 1 or 2, further comprising the following DNA molecule group:
Here, the DNA molecule group is selected from the group consisting of (j) PmdA gene, (k) PmdB gene, (l) PmdC gene and combinations thereof;
(J) The PmdA gene is any of the following DNA molecules (j-1) to (j-4):
(J-1) the DNA molecule set forth in SEQ ID NO: 23;
(J-2) a DNA molecule encoding the amino acid sequence set forth in SEQ ID NO: 24;
(J-3) a mutant of the DNA molecule described in SEQ ID NO: 23; or (j-4) a mutant of the DNA molecule described in SEQ ID NO: 24;
(K) The PmdB gene is a DNA molecule of any one of the following (k-1) to (k-4),
(K-1) the DNA molecule set forth in SEQ ID NO: 25;
(K-2) a DNA molecule encoding the amino acid sequence set forth in SEQ ID NO: 26;
(K-3) a mutant of the DNA molecule described in SEQ ID NO: 25; or (k-4) a mutant of the DNA molecule described in SEQ ID NO: 26;
(L) DNA molecule (PmdC gene) is any one of the following DNA molecules (1-1) to (1-4):
(L-1) a DNA molecule represented by SEQ ID NO: 27;
(L-2) a DNA molecule encoding the amino acid sequence set forth in SEQ ID NO: 28;
(1-3) a mutant of the DNA molecule described in SEQ ID NO: 27; or (1-4) a mutant of the DNA molecule described in SEQ ID NO: 28.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014169959A (en) * | 2013-03-05 | 2014-09-18 | Forestry & Forest Products Research Institute | Radioactive cesium processing system |
US20220119849A1 (en) * | 2020-10-19 | 2022-04-21 | Alliance For Sustainable Energy, Llc | Conversion of s-lignin compounds to useful intermediates |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005278549A (en) * | 2004-03-30 | 2005-10-13 | Yoshihiro Katayama | Gene for producing 2-pyrone-4,6-dicarboxylic acid by fermentation, plasmid containing gene, transformant containing plasmid and method for producing 2-pyrone-4,6-dicarboxylic acid |
JP2011067139A (en) * | 2009-09-25 | 2011-04-07 | Toyota Industries Corp | Recombinant vector, transformant, and method for producing 2h-pyran-2-on-4,6-dicarboxylic acid |
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005278549A (en) * | 2004-03-30 | 2005-10-13 | Yoshihiro Katayama | Gene for producing 2-pyrone-4,6-dicarboxylic acid by fermentation, plasmid containing gene, transformant containing plasmid and method for producing 2-pyrone-4,6-dicarboxylic acid |
JP2011067139A (en) * | 2009-09-25 | 2011-04-07 | Toyota Industries Corp | Recombinant vector, transformant, and method for producing 2h-pyran-2-on-4,6-dicarboxylic acid |
Non-Patent Citations (3)
Title |
---|
JPN6014036033; 片山義博 他3名: '分子生物学と有機材料科学の融合が拓く新しいリグニン利用技術' Cellulose Communications Vol.16, No.2, 20090601, pp.44-50 * |
JPN6014036036; 政井英司 他10名: 'バクテリアのリグニン代謝系解明に基づくリグニン利用技術の開発' 木材工業技術短信 Vol.27, No.1, 20091030, pp.1-13 * |
JPN6014036040; 大原誠資: 'リグニンを原料とした高機能接着剤' パルプ技術タイムス Vol.52, No.8, 20090801, pp.97-99 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014169959A (en) * | 2013-03-05 | 2014-09-18 | Forestry & Forest Products Research Institute | Radioactive cesium processing system |
US20220119849A1 (en) * | 2020-10-19 | 2022-04-21 | Alliance For Sustainable Energy, Llc | Conversion of s-lignin compounds to useful intermediates |
US11807873B2 (en) * | 2020-10-19 | 2023-11-07 | Alliance For Sustainable Energy, Llc | Conversion of S-lignin compounds to useful intermediates |
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