JPH0394685A - Dna sequence coding aspartic acid recemase - Google Patents
Dna sequence coding aspartic acid recemaseInfo
- Publication number
- JPH0394685A JPH0394685A JP23139489A JP23139489A JPH0394685A JP H0394685 A JPH0394685 A JP H0394685A JP 23139489 A JP23139489 A JP 23139489A JP 23139489 A JP23139489 A JP 23139489A JP H0394685 A JPH0394685 A JP H0394685A
- Authority
- JP
- Japan
- Prior art keywords
- aspartic acid
- dna
- aspr
- glu
- dna sequence
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 108091028043 Nucleic acid sequence Proteins 0.000 title claims abstract description 13
- CKLJMWTZIZZHCS-REOHCLBHSA-N L-aspartic acid Chemical compound OC(=O)[C@@H](N)CC(O)=O CKLJMWTZIZZHCS-REOHCLBHSA-N 0.000 title abstract description 10
- 235000003704 aspartic acid Nutrition 0.000 title abstract description 8
- OQFSQFPPLPISGP-UHFFFAOYSA-N beta-carboxyaspartic acid Natural products OC(=O)C(N)C(C(O)=O)C(O)=O OQFSQFPPLPISGP-UHFFFAOYSA-N 0.000 title abstract description 8
- 241000894006 Bacteria Species 0.000 claims abstract description 13
- 108020004414 DNA Proteins 0.000 claims abstract description 13
- 150000001413 amino acids Chemical group 0.000 claims description 9
- 101000798396 Bacillus licheniformis Phenylalanine racemase [ATP hydrolyzing] Proteins 0.000 claims description 6
- 241000194017 Streptococcus Species 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 17
- 239000013612 plasmid Substances 0.000 abstract description 13
- 108090000623 proteins and genes Proteins 0.000 abstract description 12
- 241000588724 Escherichia coli Species 0.000 abstract description 9
- 241000194020 Streptococcus thermophilus Species 0.000 abstract description 6
- 239000012634 fragment Substances 0.000 abstract description 6
- 230000001580 bacterial effect Effects 0.000 abstract description 5
- 239000013611 chromosomal DNA Substances 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 3
- 108091008146 restriction endonucleases Proteins 0.000 abstract description 3
- 102000004190 Enzymes Human genes 0.000 abstract description 2
- 108090000790 Enzymes Proteins 0.000 abstract description 2
- 108020005187 Oligonucleotide Probes Proteins 0.000 abstract description 2
- 239000000284 extract Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000002751 oligonucleotide probe Substances 0.000 abstract description 2
- 108090001066 Racemases and epimerases Proteins 0.000 abstract 5
- 102000004879 Racemases and epimerases Human genes 0.000 abstract 4
- 239000000463 material Substances 0.000 abstract 1
- 102000003960 Ligases Human genes 0.000 description 4
- 108090000364 Ligases Proteins 0.000 description 4
- 210000004027 cell Anatomy 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010367 cloning Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002773 nucleotide Substances 0.000 description 4
- 125000003729 nucleotide group Chemical group 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 125000001429 N-terminal alpha-amino-acid group Chemical group 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229940024606 amino acid Drugs 0.000 description 3
- 235000001014 amino acid Nutrition 0.000 description 3
- 241000193830 Bacillus <bacterium> Species 0.000 description 2
- 102000004163 DNA-directed RNA polymerases Human genes 0.000 description 2
- 108090000626 DNA-directed RNA polymerases Proteins 0.000 description 2
- 108091034117 Oligonucleotide Proteins 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- OPTASPLRGRRNAP-UHFFFAOYSA-N cytosine Chemical compound NC=1C=CNC(=O)N=1 OPTASPLRGRRNAP-UHFFFAOYSA-N 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- UYTPUPDQBNUYGX-UHFFFAOYSA-N guanine Chemical compound O=C1NC(N)=NC2=C1N=CN2 UYTPUPDQBNUYGX-UHFFFAOYSA-N 0.000 description 2
- 108020004707 nucleic acids Proteins 0.000 description 2
- 102000039446 nucleic acids Human genes 0.000 description 2
- 150000007523 nucleic acids Chemical class 0.000 description 2
- RWQNBRDOKXIBIV-UHFFFAOYSA-N thymine Chemical group CC1=CNC(=O)NC1=O RWQNBRDOKXIBIV-UHFFFAOYSA-N 0.000 description 2
- -1 Polybebutone 10g Substances 0.000 description 1
- UGWULZWUXSCWPX-UHFFFAOYSA-N 2-sulfanylideneimidazolidin-4-one Chemical class O=C1CNC(=S)N1 UGWULZWUXSCWPX-UHFFFAOYSA-N 0.000 description 1
- 229930024421 Adenine Natural products 0.000 description 1
- GFFGJBXGBJISGV-UHFFFAOYSA-N Adenine Chemical compound NC1=NC=NC2=C1N=CN2 GFFGJBXGBJISGV-UHFFFAOYSA-N 0.000 description 1
- 102100022108 Aspartyl/asparaginyl beta-hydroxylase Human genes 0.000 description 1
- 101150109753 Asph gene Proteins 0.000 description 1
- 241000972773 Aulopiformes Species 0.000 description 1
- 244000063299 Bacillus subtilis Species 0.000 description 1
- 235000014469 Bacillus subtilis Nutrition 0.000 description 1
- 241000186000 Bifidobacterium Species 0.000 description 1
- 241000131482 Bifidobacterium sp. Species 0.000 description 1
- 241001478240 Coccus Species 0.000 description 1
- 108020004705 Codon Proteins 0.000 description 1
- 241000194032 Enterococcus faecalis Species 0.000 description 1
- 241000588722 Escherichia Species 0.000 description 1
- 108700039691 Genetic Promoter Regions Proteins 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 101000901030 Homo sapiens Aspartyl/asparaginyl beta-hydroxylase Proteins 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229930010555 Inosine Natural products 0.000 description 1
- UGQMRVRMYYASKQ-KQYNXXCUSA-N Inosine Chemical compound O[C@@H]1[C@H](O)[C@@H](CO)O[C@H]1N1C2=NC=NC(O)=C2N=C1 UGQMRVRMYYASKQ-KQYNXXCUSA-N 0.000 description 1
- 241000186610 Lactobacillus sp. Species 0.000 description 1
- 241000192132 Leuconostoc Species 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 241000192001 Pediococcus Species 0.000 description 1
- 108010021757 Polynucleotide 5'-Hydroxyl-Kinase Proteins 0.000 description 1
- 102000008422 Polynucleotide 5'-hydroxyl-kinase Human genes 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 108091081024 Start codon Proteins 0.000 description 1
- 241000194022 Streptococcus sp. Species 0.000 description 1
- 229960000643 adenine Drugs 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000000211 autoradiogram Methods 0.000 description 1
- 229940041514 candida albicans extract Drugs 0.000 description 1
- 229940104302 cytosine Drugs 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000012869 ethanol precipitation Methods 0.000 description 1
- 238000010353 genetic engineering Methods 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 229960003786 inosine Drugs 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000010369 molecular cloning Methods 0.000 description 1
- CJWXCNXHAIFFMH-AVZHFPDBSA-N n-[(2s,3r,4s,5s,6r)-2-[(2r,3r,4s,5r)-2-acetamido-4,5,6-trihydroxy-1-oxohexan-3-yl]oxy-3,5-dihydroxy-6-methyloxan-4-yl]acetamide Chemical compound C[C@H]1O[C@@H](O[C@@H]([C@@H](O)[C@H](O)CO)[C@@H](NC(C)=O)C=O)[C@H](O)[C@@H](NC(C)=O)[C@@H]1O CJWXCNXHAIFFMH-AVZHFPDBSA-N 0.000 description 1
- 210000004897 n-terminal region Anatomy 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 235000018102 proteins Nutrition 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 235000019515 salmon Nutrition 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229940113082 thymine Drugs 0.000 description 1
- 230000014621 translational initiation Effects 0.000 description 1
- 239000012138 yeast extract Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は、アスパラギン酸ラセマーゼ産生菌より産生さ
れるアスパラギン酸ラセマーゼ(以下ASPRと記す)
をコードするDNA配列に関するものである。Detailed Description of the Invention (Industrial Application Field) The present invention relates to aspartate racemase (hereinafter referred to as ASPR) produced by aspartate racemase-producing bacteria.
It relates to a DNA sequence encoding.
(従来技術)
従来ASPRは、ストレブトコッ力ス フエー力リス(
Streptococcus faecalis%AT
CC9790)より部分精製されている(J.Biol
.Chem.,247.5103(1972))ほか、
ラクトバチルス属(Lactobacillus Sp
.) 、ストレブトコッカス属(Streptococ
cus Sp.) ベデイオコツカス属(Pedio
coccus Sp.) ロイコノストック属(le
uconostoc Sp.) s ビフイドバクテリ
ウム属(Bifidobacterium Sp.)等
に属する微生物より産生されるものが知られているが、
DNA配列が解析された例は報告されていない。(Prior art) Conventional ASPR is
Streptococcus faecalis%AT
CC9790) is partially purified from (J. Biol
.. Chem. , 247.5103 (1972)) et al.
Lactobacillus Sp.
.. ), Streptococcus sp.
cus Sp. ) Pediococcus spp.
coccus Sp. ) Leuconostoc (le
uconostoc Sp. ) s It is known that these are produced by microorganisms belonging to the genus Bifidobacterium (Bifidobacterium Sp.), etc.
No cases have been reported in which the DNA sequence has been analyzed.
(本発明が解決しようとする問題点)
ASPRは、アスパラギン酸のラセミ化を行なうために
必要な酵素であるが、菌体内に少量しか存在しないため
、これまで利用された事が無かった。そこで、遺伝子操
作技術を適用する事によりASPRを産生ずる事が考え
られるが、効率良<ASPRを産生ずるためには、AS
PRをコードするDNA配列の解析が不可欠である。(Problems to be Solved by the Present Invention) ASPR is an enzyme necessary for racemizing aspartic acid, but it has not been used until now because it exists in only a small amount within bacterial cells. Therefore, it is possible to produce ASPR by applying genetic engineering technology, but in order to produce ASPR efficiently, it is necessary to
Analysis of the DNA sequence encoding PR is essential.
本発明者らは、ASPRをコードするDNIAを含有す
るブラスミドにより形質転換された細菌からブラスミド
を単離し、その中のASPRをコードするDNA断片の
塩基配列を決定する事に成功し、本発明に至った。The present inventors isolated a plasmid from a bacterium transformed with a plasmid containing DNA encoding ASPR, and succeeded in determining the nucleotide sequence of a DNA fragment encoding ASPR contained therein. It's arrived.
(問題を解決するための手段)
即ち、本発明はASPR産生菌により産生されるASP
RをコードするDNA配列である。(Means for Solving the Problems) That is, the present invention solves the problem by using ASP produced by ASPR-producing bacteria.
This is a DNA sequence encoding R.
本発明のDNA配列の決定は次の方法によって行なう事
が出来る。The DNA sequence of the present invention can be determined by the following method.
(1)ブローブの作成
ASPR産生菌を培養し、その抽出液からASPRを精
製する。精製したASPRのN末端のアミノ酸配列を決
定し、それに対応するDNAを合成する。(1) Preparation of probe ASPR-producing bacteria are cultured, and ASPR is purified from the extract. The N-terminal amino acid sequence of purified ASPR is determined, and the corresponding DNA is synthesized.
(2)ASPR産生菌由来のASPRをコードする遺伝
子のクローニンング
ASPR生産菌を培養し、菌体を回収後、サイトウーミ
ウラ(Saito−Miura)法(Biochim.
Biophys. Acta, 72, 619 (1
963) )などにより染色体DNAを単離する。この
染色体DNAを制限酵素で消化し、この断片と、ベクタ
ーの役割を有するプラスミドを制限酵素で消化したもの
をリガーゼにより連結する。この連結したDNAでマン
デルーヒガ(Mandel−Higa)の方法(J.M
ol.Bio1.,53,159(1970))などに
より宿主となりつる細菌を形質転換する。得られた形質
転換体から、先に合成したDNAをプローブとしてコロ
ニーパイプリダイゼイション法( Gene, 10.
63(l980))により、ASPR遺伝子を有する
株を選択する。この株からエイチ.シーバーンボイン
アンド ジェー.ドーリー(1. C. 13irnb
oinand J.Doly)の方法(Nucleic
Acid Research,7. 1513(19
79))などによりASPRをコードする遺伝子を含有
するブラスミド(以下プラスミドAとする)を単離する
。(2) Cloning of a gene encoding ASPR derived from an ASPR-producing bacterium After culturing the ASPR-producing bacterium and collecting the bacterial cells, the Saito-Miura method (Biochim.
Biophys. Acta, 72, 619 (1
Chromosomal DNA is isolated by methods such as 963). This chromosomal DNA is digested with restriction enzymes, and this fragment and a plasmid that functions as a vector that has been digested with restriction enzymes are ligated using ligase. Using this ligated DNA, Mandel-Higa's method (J.M.
ol. Bio1. , 53, 159 (1970)), etc., to transform the host vine bacteria. From the obtained transformant, the colony piperidization method (Gene, 10.
63 (l980)) to select a strain containing the ASPR gene. H from this stock. Seaburn Boyne
And J. Dolly (1. C. 13irnb
oinand J. Doly's method (Nucleic
Acid Research, 7. 1513 (19
A plasmid (hereinafter referred to as plasmid A) containing a gene encoding ASPR is isolated by methods such as 79).
(3)ASPRをコードする遺伝子の塩基配列の決定
ブラスミドAのASPRをコードするDNA断片の全塩
基配列をサンガー( Sanger)ジデオキシ法(S
cience,214.1205(1981))などに
より決定する。(3) Determination of the nucleotide sequence of the gene encoding ASPR The entire nucleotide sequence of the DNA fragment encoding ASPR of plasmid A was determined using the Sanger dideoxy method (S
science, 214.1205 (1981)).
このようにして決定された塩基配列は、その塩基配列か
ら推定されるアミノ酸配列及びアミノ酸組成を、精製さ
れたASPHのそれと比較することにより、同定するこ
とができる。The base sequence determined in this manner can be identified by comparing the amino acid sequence and amino acid composition deduced from the base sequence with those of purified ASPH.
また。本発明のASPRをコードするDNA配列を含む
プラスミドを生産効率のよい宿主として適した細菌に組
込むことによってASPRを生産する事が出来る。Also. ASPR can be produced by integrating a plasmid containing a DNA sequence encoding the ASPR of the present invention into a bacterium suitable as a host with high production efficiency.
本発明においてクローニンングに用いられる宿主として
は、エシエリシア(Escherichia)属細菌、
例えばエシェリシア コリ(Escherichiac
olt,以下E.coliと略す) HBIOI,E.
coliNM522等やバチルス(Bacillus)
属細菌、例えばバチルス サブチリス(Bacillu
s subtillis)が挙げられる。In the present invention, the hosts used for cloning include bacteria of the genus Escherichia,
For example, Escherichia coli (Escherichia coli)
olt, hereinafter referred to as E. coli) HBOI, E.
coli NM522 etc. and Bacillus
Bacteria of the genus Bacillus, such as Bacillus subtilis.
S subtillis).
ベクターの役割をするブラスミドとしては、pBR32
2, pUc1g, pTZ18, pUB110,
pHSG298等が挙げられるが宿主との組み合わせに
よって適宜選択することができる。また、必要に応じて
、クローニング、サブクローニングでの宿主一ベクター
系を変えてもよい。As a plasmid that acts as a vector, pBR32
2, pUc1g, pTZ18, pUB110,
Examples include pHSG298, which can be appropriately selected depending on the combination with the host. Furthermore, the host-vector system used in cloning and subcloning may be changed as necessary.
リガーゼは、例えばT4リガーゼが用いられる。次に実
施例に基ずいて本発明を詳細に説明するが、本発明はこ
れに限定されるものではない。For example, T4 ligase is used as the ligase. Next, the present invention will be explained in detail based on Examples, but the present invention is not limited thereto.
〈実施例〉
(1)ブローブの作成
ストレブトコッカス サーモフィラスIAN10064
(Streptococcus thermophil
lus)を含む300lの培地(酵母エキス5.5g、
ポリベブトン10g、ブドウ糖10g,酢酸ナトリウ.
410gを11に含有)で37℃、20時間培養後、菌
体を得た。得られた菌体から岡田らの方法により50μ
gの精製ASPR標品を得た。そのN末端アミノ酸配列
を気相プロテインシークエンサー(モデル470A,A
pplied Biosystems, Inc.)を
用いた自動エドマン分解法により決定した。エドマン分
解により生じたチオヒダントイン化合物はMicro
pak SPC 18−3カラム( Varian A
ssociates, Inc)を用いたHPLCによ
り分析した。<Example> (1) Preparation of probe Streptococcus thermophilus IAN10064
(Streptococcus thermophile
300 l of medium (5.5 g of yeast extract,
Polybebutone 10g, glucose 10g, sodium acetate.
After culturing at 37° C. for 20 hours at 410 g (containing 11), bacterial cells were obtained. From the obtained bacterial cells, 50μ
A purified ASPR specimen of g was obtained. The N-terminal amino acid sequence was analyzed using a gas phase protein sequencer (model 470A, A).
pplied Biosystems, Inc. ) was determined by the automated Edman decomposition method. Thiohydantoin compounds produced by Edman degradation are Micro
pak SPC 18-3 column (Varian A
ssociates, Inc.).
得られたアミノ酸配列に対応する配列を有するオリゴヌ
クレオチドを自動DNA合成装置(Mode1381A
,Applied Biosystems, Inc.
)を用いて合成した。即ち、次にような配列をもつオリ
ゴヌクレオチドである。An oligonucleotide having a sequence corresponding to the obtained amino acid sequence was synthesized using an automatic DNA synthesizer (Model 1381A).
, Applied Biosystems, Inc.
). That is, it is an oligonucleotide having the following sequence.
5゜ATGGA (AG)AA (TC)TT (TC
)TT (TC)I I IATI ITIGGI I
I I ATGGG I AC I ATGGC I
AC I GA (AG)I I ITT3゜
Aはアデニン、Gはグアニン、Cはシトシン、Tはチミ
ン、■はイノシンである。また、括弧でくくられたもの
は2つの塩基が混ざったものであることを示す。5゜ATGGA (AG)AA (TC)TT (TC
)TT (TC)I I IATI ITIGGI I
I I ATGGG I AC I ATGGC I
A is adenine, G is guanine, C is cytosine, T is thymine, and ■ is inosine. Also, something enclosed in parentheses indicates a mixture of two bases.
(2)ストレブトコッカス サーモフィラス(Stre
ptococcus thermophillus)由
来のASPRをコードする遺伝子のクローニングストレ
ブトコッカス サーモフィラス菌体よリバイオキミカ
エト バイオフィジカ アクタ(Biochim. B
iophys. Acta) 72, 619 (19
63)に記載されているサイトウーミウラ(Saito
−Miura)法に従って染色体DNAを得る。このD
NAなHindIII (宝酒造製)により、1−3
時間消化し1−10kdのDNA断片を得た。又、ブラ
スミドpUcl9 3 ugをHindIIIで完全消
化し、これを上記染色体DNAのHindIII断片と
T4リガーゼ(宝酒造製)を用いて13℃でオーバーナ
イト反応により連結し、この反応液をエタノール沈殿に
より濃縮した。濃縮後、ジャーナル オブ モレキュラ
ー バイオロジ−(J.Mo1.8io1.)53,1
5,159(1970)に記載されているマンデルーヒ
ガ(Mandel−Higa)の方法により連結された
DNAを含む濃縮液で、E.coli HBIOIを形
質転換した。(2) Streptococcus thermophilus (Stre
Cloning of the gene encoding ASPR from Streptococcus thermophilus
Biochim. B
iophys. Acta) 72, 619 (19
Saito Umiura described in 63)
- Obtain chromosomal DNA according to the Miura method. This D
1-3 by NA HindIII (manufactured by Takara Shuzo)
After time digestion, a 1-10 kd DNA fragment was obtained. In addition, 3 ug of plasmid pUcl9 was completely digested with HindIII, and this was ligated with the HindIII fragment of the chromosomal DNA described above using T4 ligase (manufactured by Takara Shuzo) by an overnight reaction at 13°C, and this reaction solution was concentrated by ethanol precipitation. . After concentration, Journal of Molecular Biology (J.Mo1.8io1.) 53,1
A concentrated solution containing DNA ligated by the method of Mandel-Higa described in E. 5, 159 (1970). E. coli HBIOI was transformed.
この大腸菌HBIOIを用いたDNAライブラリーをプ
レート上に約1xl04クローン/プレートとなるよう
に5枚まき、このプレートをマスタープレートとしてニ
トロセルローのレプリカフィルター(ミリボア社、HA
TFフィルター)を作製した。このレプリカフィルター
上の大腸菌を0.5M NaOH溶液でとかし露出変性
したプラスミドDNAをフィルター上に乾燥固定した(
Grunstein,M. & Hogness,D.
S. ブロシーヂングス オブ ナショナル アカデ
ミー オブ サイエンス( Proc. Natl.A
cad. Sci. USA) 72.3691 (1
972)). 実施例lの(1)で作製したオリゴヌ
クレオチドブローブの5゜末端をT4ボリヌクレオチド
キナーゼ(宝酒造製)、[32γ] ATPを用いて3
2Pで標識した。This DNA library using E. coli HBIOI was spread on five plates at approximately 1 x 104 clones/plate, and this plate was used as a master plate using a nitrocellulose replica filter (Millibore, HA).
TF filter) was produced. The E. coli on this replica filter was dissolved with a 0.5M NaOH solution, and the denatured plasmid DNA was dried and fixed on the filter (
Grunstein, M. & Hogness, D.
S. Proceedings of the National Academy of Sciences (Proc. Natl.A)
cad. Sci. USA) 72.3691 (1
972)). The 5° end of the oligonucleotide probe prepared in Example 1 (1) was isolated using T4 polynucleotide kinase (manufactured by Takara Shuzo) and [32γ]ATP.
Labeled with 2P.
標識したブローブをDNAを固定したレプリカフィルタ
ーに会合させた.会合反応は10μCiの標識ブローブ
を含む2 X S S C (0.06M NaCl,
0.006M Sodium cltrate),2X
Denhart’s,40μg/ml 変性サケ精子
DNA溶液10ml中で16時間行ない.、反応後、フ
ィルターを2XSSCで室温で30分ずつ3回洗浄した
(T. Maniatisら、モレキュラー クローニ
ング(MolecularCloning) Cold
Spring Harbor Laboratory
,p309, 1982)。 洗浄したフィルターより
オートラジオグラムをとり、2枚のレプリカフィルター
を重ね合わせることによりASPHの遺伝子を含む菌を
探した。この方法により5 x 104colonie
sより1株E.coli HBIOI/pAG2を得た
。The labeled probe was associated with a DNA-immobilized replica filter. The association reaction contained 10 μCi of labeled probe in 2×SSC (0.06M NaCl,
0.006M Sodium cltrate), 2X
Denhart's, 40 μg/ml denatured salmon sperm DNA solution (10 ml) for 16 hours. After the reaction, the filter was washed three times with 2X SSC for 30 minutes each at room temperature (T. Maniatis et al., Molecular Cloning Cold
Spring Harbor Laboratory
, p. 309, 1982). An autoradiogram was taken from the washed filter, and bacteria containing the ASPH gene were searched for by overlapping the two replica filters. By this method 5 x 104 colonies
1 strain E. from s. E. coli HBIOI/pAG2 was obtained.
この菌株よりエイチ シー バーンボインアンド ジェ
ー ドーリー(H.C.Birnboin andJ.
Doly)の方法(ヌクレイック アシッド リサー
チ(Nucleic Acid Research)7
.1513(1979))などによりASPRをコード
する遺伝子有するブラスミド(pAG2)を抽出精製し
た。From this strain, H.C. Birnboin and J.
Doly's method (Nucleic Acid Research) 7
.. A plasmid (pAG2) containing a gene encoding ASPR was extracted and purified using methods such as 1513 (1979).
(3)ASPRをコードする遺伝子の塩基配列の決定
pAG2の塩基配列をサイエンス(Science)2
14.1205(1981)に記載されているサンガー
(Sanger)のジデオキシ法により全塩基配列を決
定した。(3) Determination of the base sequence of the gene encoding ASPR The base sequence of pAG2 was determined using Science 2.
The entire base sequence was determined by Sanger's dideoxy method described in 14.1205 (1981).
その結果、決定された全塩基配列のうち、ASPRをコ
ードするDNA配列は後述表2に示す通りであった。As a result, among all the base sequences determined, the DNA sequence encoding ASPR was as shown in Table 2 below.
このうち1〜337番目の塩基配列は5゛−ノンコーデ
ィング部分であり、プロモーター領域を含有している。Among these, the nucleotide sequence 1 to 337 is a 5'-non-coding portion and contains a promoter region.
267〜272番目のTTGATGは、RNAボリメラ
ーゼの認識部位と考えられる″−35塩基対部位”であ
る。291〜296番目のTATATTはRNAボリメ
ラーゼの結合部位と考えられる“−10塩基対部位”
(ブリブノウ配列)である。325〜330番目のAG
AAGGは、シャインーダルガーノ配列(SD配列)で
ある。338〜1069番目の塩基配列は、構造遺伝子
部分であり、338〜340番目のATGは翻訳開始コ
ドンである。TTGATG at positions 267 to 272 is a "-35 base pair site" that is considered to be a recognition site for RNA polymerase. TATATT at positions 291 to 296 is a “-10 base pair site” that is considered to be the binding site for RNA polymerase.
(Bribnow sequence). 325th to 330th AG
AAGG is Shine-Dalgarno sequence (SD sequence). The 338th to 1069th base sequence is a structural gene part, and the 338th to 340th ATG is a translation initiation codon.
1070〜1126番目の塩基配列は3゜−ノンコーデ
ィングであり、1070〜1072番目のTAGは翻訳
終止コドンである。The 1070th to 1126th base sequence is 3°-noncoding, and the 1070th to 1072nd TAG is a translation stop codon.
(4)AspRをコードする遺伝子の同定このようにし
て決定された塩基配列よりすいていされるアミノ酸配列
は後述表3に示す通りである。(4) Identification of the gene encoding AspR The amino acid sequences determined from the base sequences determined in this way are shown in Table 3 below.
この推定されるアミノ酸配列のN末端領域構造はMet
−Gl u−Asn−Phe−Phe−Ser−I 1
e−Leu−Gly−Gly−Met−Gly−Thr
−Met−Ala−Thr−Glu−Ser−Phe
でありストレブトコッカス サーモフィラスより精製さ
れたAspRの自動エドマン分解により決定されたN末
端アミノ酸配列
Met−Glu−Asn−Phe−Phe−Ser−I
1e−Leu−Gly−Gly−M e t − G
1 y − T h r − M e t − A
l a −Thr−Glu−Ser−Phe
と完全に一致した。The structure of the N-terminal region of this deduced amino acid sequence is Met
-Glu-Asn-Phe-Phe-Ser-I 1
e-Leu-Gly-Gly-Met-Gly-Thr
-Met-Ala-Thr-Glu-Ser-Phe and the N-terminal amino acid sequence determined by automated Edman degradation of AspR purified from Streptococcus thermophilus Met-Glu-Asn-Phe-Phe-Ser-I
1e-Leu-Gly-Gly-Met-G
1 y - T h - M e t - A
It was completely consistent with l a -Thr-Glu-Ser-Phe.
また、決定したDNA配列から推定したAspRと、ス
トレブトコッカス サーモフィラスから推定したAsp
Rのアミノ酸組成を比較すると、表1に示すとおりよく
一致していた。In addition, AspR estimated from the determined DNA sequence and Asp estimated from Streptococcus thermophilus
A comparison of the amino acid compositions of R showed good agreement as shown in Table 1.
表1
ASPRのアミノ酸組成(サブユニットあたりの残基数
)表2
ATrTGGGGCA AATA丁CCTAA A
AGATATTrG GTCCAAA1UT T丁
丁丁GCアミノ酸配列
Met−Glu−Asn−Phe−Phe−Ser−I
1e−Leu−Gly−GlyMet−Glu−Thr
−Met−Ala−Thr−Glu−Ser−Phe−
ValArg−Lec−I1e−Asn−His−Ar
g−Thr−Lys−^1a−ThrLys−Asp−
Gin−Gsu−Tyr−Leu−Asn−Tyr−V
al−LeuPhe−Asn−His−Aln−Thr
−Val−Pro−Asp−Arg−ThrAla−T
yr−I1e−Leu−Asp−Arg−Ser−Gl
u−Glu−AsnPra−Met−Pro−Phe−
Leu−Leu−^sp−Asp−I1e−GluLy
s−Glm−Asn−Leu−Lau−Arg−Pro
−Asn−Phe− 1 1eVal−Len−Thr
−Cys−Asn−Thr−Ala−His−Tyr−
PhePhe−Glu−Glu−Leu−Gln−Al
a−Ala−Thr−Asp− I lePro−I1
e−Leu−}1is−Met−Pro−Arg−Gl
u−Ala−AlaAsn−Glu−Leu−Val−
Arg−Gln−His−Thr−Thr−GlyAr
g−Val−Ala− 1 1e−Leu−Gly−T
hr−Glu−Gly−SerMet−1ys−Ala
−Gly−11e−Tyr−Glu−Arg−Gly−
ValLys−Asn−Leu−Gly−Phe−Gl
u−Thr−Mal−I1e−ProAsp−Thr−
Ala−Leu−Gin−Glu−Lys−I1e−^
sn−TyrLeu−I1e−Tyr−}1iu−Gl
u−I1e−Lys−Glu−Sel−AspHis−
Leu−Asn−Gin−Gin−Glu−Leu−T
yr−Glu−I1eLeu−Glu−Glu−Ala
−Val−Glu−Arg−Len−Asn−CysG
lu−Lys−Val−I1e−Leu−Gly−Cy
s−Thr−Glu−LeuSer−Leu−Met−
Asn−Glu−Phe−Ala−Glu−Asp−A
snHis−Tyr−Pro−Vro−I1e−Asp
−Ala−Gin−Ser−11eLeu−Aia−A
rg−Arg−Thr− I le−Glu−Arg−
Ala−Leu^1a−Glu−Arg−Asn−Gl
a−Ala−Leu−Asp−Thr−ValSer−
Glu−LysTable 1 Amino acid composition of ASPR (number of residues per subunit) Table 2 ATrTGGGGCA AATA Ding CCTAA A
AGATATTTrG GTCCAAA1UT T Ding Ding GC Amino acid sequence Met-Glu-Asn-Phe-Phe-Ser-I
1e-Leu-Gly-GlyMet-Glu-Thr
-Met-Ala-Thr-Glu-Ser-Phe-
ValArg-Lec-I1e-Asn-His-Ar
g-Thr-Lys-^1a-ThrLys-Asp-
Gin-Gsu-Tyr-Leu-Asn-Tyr-V
al-LeuPhe-Asn-His-Aln-Thr
-Val-Pro-Asp-Arg-ThrAla-T
yr-I1e-Leu-Asp-Arg-Ser-Gl
u-Glu-AsnPra-Met-Pro-Phe-
Leu-Leu-^sp-Asp-I1e-GluLy
s-Glm-Asn-Leu-Lau-Arg-Pro
-Asn-Phe- 1 1eVal-Len-Thr
-Cys-Asn-Thr-Ala-His-Tyr-
PhePhe-Glu-Glu-Leu-Gln-Al
a-Ala-Thr-Asp-IlePro-I1
e-Leu-}1is-Met-Pro-Arg-Gl
u-Ala-AlaAsn-Glu-Leu-Val-
Arg-Gln-His-Thr-Thr-GlyAr
g-Val-Ala- 1 1e-Leu-Gly-T
hr-Glu-Gly-SerMet-1ys-Ala
-Gly-11e-Tyr-Glu-Arg-Gly-
ValLys-Asn-Leu-Gly-Phe-Gl
u-Thr-Mal-I1e-ProAsp-Thr-
Ala-Leu-Gin-Glu-Lys-I1e-^
sn-TyrLeu-I1e-Tyr-}1iu-Gl
u-I1e-Lys-Glu-Sel-AspHis-
Leu-Asn-Gin-Gin-Glu-Leu-T
yr-Glu-I1eLeu-Glu-Glu-Ala
-Val-Glu-Arg-Len-Asn-CysG
lu-Lys-Val-I1e-Leu-Gly-Cy
s-Thr-Glu-LeuSer-Leu-Met-
Asn-Glu-Phe-Ala-Glu-Asp-A
snHis-Tyr-Pro-Vro-I1e-Asp
-Ala-Gin-Ser-11eLeu-Aia-A
rg-Arg-Thr- I le-Glu-Arg-
Ala-Leu^1a-Glu-Arg-Asn-Gl
a-Ala-Leu-Asp-Thr-ValSer-
Glu-Lys
Claims (4)
るアスパラギン酸ラセマーゼをコードするDNA配列(1) DNA sequence encoding aspartate racemase produced by aspartate racemase-producing bacteria
ッカス属細菌である特許請求の範囲第1項記載のDNA
配列(2) The DNA according to claim 1, wherein the aspartate racemase-producing bacterium is a Streptococcus bacterium.
array
で示されるものである特許請求の範囲第1項記載のDN
A配列(3) DN according to claim 1, wherein the aspartate racemase is shown by the amino acid sequence shown in Table 3.
A array
項記載のDNA配列(4) Claim 1 indicated by the DNA sequence in Table 2
DNA sequence described in section
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23139489A JP2947829B2 (en) | 1989-09-08 | 1989-09-08 | DNA encoding aspartate racemase |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23139489A JP2947829B2 (en) | 1989-09-08 | 1989-09-08 | DNA encoding aspartate racemase |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0394685A true JPH0394685A (en) | 1991-04-19 |
JP2947829B2 JP2947829B2 (en) | 1999-09-13 |
Family
ID=16922920
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Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5337608A (en) * | 1992-12-18 | 1994-08-16 | Minnesota Mining And Manufacturing Company | Drive roller torque reference cartridge |
US5346155A (en) * | 1992-04-30 | 1994-09-13 | Minnesota Mining And Manufacturing Company | Belt driven cartridge with magnetic brake assembly |
US5516055A (en) * | 1994-03-28 | 1996-05-14 | Minnesota Mining And Manufacturing Company | Tape tension enhancement for belt driven tape cartridge corner rollers |
-
1989
- 1989-09-08 JP JP23139489A patent/JP2947829B2/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5346155A (en) * | 1992-04-30 | 1994-09-13 | Minnesota Mining And Manufacturing Company | Belt driven cartridge with magnetic brake assembly |
US5337608A (en) * | 1992-12-18 | 1994-08-16 | Minnesota Mining And Manufacturing Company | Drive roller torque reference cartridge |
US5516055A (en) * | 1994-03-28 | 1996-05-14 | Minnesota Mining And Manufacturing Company | Tape tension enhancement for belt driven tape cartridge corner rollers |
Also Published As
Publication number | Publication date |
---|---|
JP2947829B2 (en) | 1999-09-13 |
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