JP4637183B2 - コリネフォルム細菌由来のproB遺伝子の突然変異体 - Google Patents
コリネフォルム細菌由来のproB遺伝子の突然変異体 Download PDFInfo
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- JP4637183B2 JP4637183B2 JP2007547267A JP2007547267A JP4637183B2 JP 4637183 B2 JP4637183 B2 JP 4637183B2 JP 2007547267 A JP2007547267 A JP 2007547267A JP 2007547267 A JP2007547267 A JP 2007547267A JP 4637183 B2 JP4637183 B2 JP 4637183B2
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- FEMOMIGRRWSMCU-UHFFFAOYSA-N ninhydrin Chemical compound C1=CC=C2C(=O)C(O)(O)C(=O)C2=C1 FEMOMIGRRWSMCU-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/195—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria
- C07K14/34—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria from Corynebacterium (G)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/10—Transferases (2.)
- C12N9/12—Transferases (2.) transferring phosphorus containing groups, e.g. kinases (2.7)
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Genetics & Genomics (AREA)
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- General Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Molecular Biology (AREA)
- Biochemistry (AREA)
- Biomedical Technology (AREA)
- General Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Microbiology (AREA)
- Gastroenterology & Hepatology (AREA)
- Biophysics (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Enzymes And Modification Thereof (AREA)
Description
a)配列番号1、好ましくは配列番号3に対して少なくとも70%の同一性を有するか、あるいは、
b)本発明によるγ−グルタミルキナーゼをコードし、この場合、これは、369±40アミノ酸の長さであるか、あるいは、
c)本発明によるγ−グルタミルキナーゼをコードし、この場合、これは、配列番号2、好ましくは配列番号4のアミノ酸を、少なくともその位置または同等の位置145〜154位で有するか、あるいは、
d)本発明によるγ−グルタミルキナーゼをコードし、この場合、これは、配列番号2、好ましくは配列番号4のアミノ酸配列を、その位置または同等の位置145〜154位で有し、かつ、配列番号1または配列番号3に対して相補的なヌクレオチド配列に対して、ストリンジェントな試験条件下でハイブリダイズするか、あるいは、
f)本発明による酵素、γ−グルタミルキナーゼをコードし、かつその塩基配列が、配列番号3に示すように446位でアデニンを含む、複製可能なヌクレオチド配列である。
●グルタメートデヒドロゲネース(EC 1.4.1.4 )をコードするgdh遺伝子
●γ−グルタミル−ホスフェートレダクターゼ(EC 1.2.1.41 )をコードするproA遺伝子
●プロリン−5−カルボキシレートレダクターゼ(EC 1.5.1.2 )をコードするproC遺伝子および
●オルニチンシクロデアミナーゼ(EC 4.3.1.12 )をコードするocd遺伝子
L−プロリンを製造するために、さらにproB遺伝子の本発明による突然変異体を使用するのに加えて、同時に減衰、特に発現を減少させるために、特に以下の群から選択された内在性遺伝子の1種またはそれ以上を使用することができる。
●トレオニンデアミナーゼ(EC 4.2.1.16 )をコードするilvA遺伝子
●プロリンデヒドロゲナーゼ/プロリン−5−カルボキシレートデヒドロゲナーゼ(EC 1.5.99.8 )をコードするputA遺伝子
●2−ケトグルタレートデヒドロゲナーゼ(EC 1.2.4.2 )をコードするsucA遺伝子、
●ジヒドロリポアミドスクシニルトランスフェラーゼ(EC 2.3.1.61 )をコードするsucB遺伝子および
●アセチルオルニチンアミノトランスフェラーゼ(EC 2.6.1.11 )をコードするargD遺伝子
これに関連して、用語「減衰」は、微生物中で、相当するDNAによりコードされる1種またはそれ以上の酵素またはタンパク質の細胞内活性または濃度の減少または除去を示し、たとえば、これは、弱いプロモーターを使用するか、あるいは、低い活性を有する相当する酵素を硬度する遺伝子または対立遺伝子を使用するか、あるいは、相当する遺伝子または酵素またはタンパク質を不活性化することにより、かつ適切である場合には、これら手段を組合せることによりおこなう。
a)本発明による少なくとも1種のヌクレオチド配列を発現または過剰発現するホスト微生物を発酵し、かつ、
b)L−プロリンを単離または回収し、その際、適切である場合には、発酵ブロスおよび/またはバイオマスからの成分を含む、
ことにより、L−プロリンを連続的に製造することである。
a)本発明による少なくとも1種のヌクレオチド配列を発現または過剰発現するコリネフォルム細菌を発酵し、
b)コリネフォルム細菌の発酵ブロスまたは細胞中で、L−プロリンを濃縮し、
c)発酵ブロスからL−プロリンを単離または回収し、その際、適切である場合には、
d)発酵ブロスおよび/またはバイオマスからの成分(>0〜<100質量%のバイオマス、好ましくは10〜80質量%、より好ましくは20〜60質量%)を含む。
Claims (13)
- アミノ酸149位でL−アスパラギン酸を有する、配列番号2に記載の配列からなるポリペプチドをコードする、単離されたポリヌクレオチド。
- 配列番号4に記載の配列からなるポリペプチドをコードする、請求項1に記載の単離されたポリヌクレオチド。
- 配列番号3に記載の配列からなる、請求項2に記載の単離されたポリヌクレオチド。
- 配列番号4に記載の配列からなるポリペプチド。
- 請求項1に記載の単離されたポリヌクレオチドを含む、組み換えベクター。
- 請求項2に記載の単離されたポリヌクレオチドを含む、組み換えベクター。
- 請求項3に記載の単離されたポリヌクレオチドを含む、組み換えベクター。
- 請求項1に記載の単離されたポリヌクレオチドを含む、ホスト細胞。
- 請求項2に記載の単離されたポリヌクレオチドを含む、ホスト細胞。
- 請求項3に記載の単離されたポリヌクレオチドを含む、ホスト細胞。
- コリネバクテリウムホスト細胞である、請求項8から10までのいずれか1項に記載のホスト細胞。
- a)請求項1から3までのいずれか1項に記載のヌクレオチド配列を発現または過剰発現するホスト微生物を発酵させ、かつ、
b)L−プロリンを、発酵ブロスおよび/またはバイオマスからの成分と一緒に単離することによる、L−プロリンの製造方法。 - L−プロリンを、発酵ブロスおよび/またはバイオマスからの成分と一緒に回収する、請求項12に記載の方法。
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PCT/EP2005/013372 WO2006066758A1 (en) | 2004-12-22 | 2005-12-13 | Mutant of the prob gene from coryneform bacteria |
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ZA200705143B (en) | 2008-09-25 |
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