JP6286571B2 - L−リジン生産能が向上したコリネバクテリウム属微生物、及びそれを利用したl−リジン生産方法 - Google Patents
L−リジン生産能が向上したコリネバクテリウム属微生物、及びそれを利用したl−リジン生産方法 Download PDFInfo
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- JP6286571B2 JP6286571B2 JP2016550437A JP2016550437A JP6286571B2 JP 6286571 B2 JP6286571 B2 JP 6286571B2 JP 2016550437 A JP2016550437 A JP 2016550437A JP 2016550437 A JP2016550437 A JP 2016550437A JP 6286571 B2 JP6286571 B2 JP 6286571B2
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- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
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- WLJVNTCWHIRURA-UHFFFAOYSA-N pimelic acid Chemical compound OC(=O)CCCCCC(O)=O WLJVNTCWHIRURA-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P13/00—Preparation of nitrogen-containing organic compounds
- C12P13/04—Alpha- or beta- amino acids
- C12P13/08—Lysine; Diaminopimelic acid; Threonine; Valine
-
- 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
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/20—Bacteria; Culture media therefor
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Description
以下、本発明の実施形態を示す。
(1)配列番号1のアミノ酸配列をコーディングするポリヌクレオチドの発現が強化された、L−リジン生産能を有するコリネバクテリウム属微生物。
(2)前記発現強化は、コピー数増加、発現調節配列の操作、またはその組み合わせによるものであることを特徴とする(1)に記載の微生物。
(3)前記微生物は、コリネバクテリウムグルタミクムであることを特徴とする(1)に記載の微生物。
(4)(1)に記載の微生物を培養する段階と、培養物中のL−リジンを得る段階と、を含むL−リジンを生産する方法。
コリネバクテリウムグルタミクムATCC13032菌株のgenomic DNAを準備した後、制限酵素Sau3AIを処理し、6ないし8kbの部分切片を獲得した。前記切片を、制限酵素BamHI末端を有する大腸菌及びコリネバクテリウムの形質転換用シャトルベクターpECCG122に連結した後、大腸菌DH5αに形質転換し、カナマイシン(25mg/L)が含まれたLB固体培地に塗抹した。PCR(配列番号3及び4のプライマー利用)を介して、前記切片が挿入されたベクターに形質転換されたコロニーを選別した後、それらをいずれも混合培養し、一般的に知られているプラスミド抽出法によってプラスミドを抽出した。
配列番号4:CCGCGCGTAATACGACTCACTATA
実施例1で作成した組み換えベクターを、電気パルス法を利用して、リシン生産菌株であるコリネバクテリウムグルタミクムKCCM11016Pに形質転換した後、下記の複合平板培地に塗抹した。
<複合平板培地>
ブドウ糖20g、(NH4)2SO450g、ペプトン10g、酵母抽出物5g、尿素1.5g、KH2PO4 5g、K2HPO410g、MgSO4・7H2O 0.5g、ビオチン100μg、チアミン塩酸塩1,000μg、カルシウム−パントテン酸2,000μg、ニコチンアミド2,000μg、寒天20g、カナマイシン25mg(蒸溜水1リットル基準)
<複合液体培地>
ブドウ糖20g、ペプトン10g、酵母抽出物5g、尿素1.5g、KH2PO44g、K2HPO4 8g、MgSO4・7H2O 0.5g、ビオチン100μg、チアミンHCl 1,000μg、カルシウム−パントテン酸2,000μg及びニコチンアミド2,000μg(蒸溜水1リットル基準)
<種培地(pH7.0)>
ブドウ糖20g、(NH4)2SO410g、ペプトン10g、酵母抽出物5g、尿素1.5g、KH2PO4 4g、K2HPO48g、MgSO4・7H2O 0.5g、ビオチン100μg、チアミンHCl 1,000μg、カルシウム−パントテン酸2,000μg、ニコチンアミド2,000μg(蒸溜水1リットル基準)
ブドウ糖100g、(NH4)2SO440g、大豆タンパク質2.5g、トウモロコシ浸漬固形粉(cornsteep solid)5g、尿素3g、KH2PO41g、MgSO4・7H2O 0.5g、ビオチン100μg、チアミン塩酸塩1,000μg、カルシウム−パントテン酸2,000μg、ニコチンアミド3,000μg、CaCO330g(蒸溜水1リットル基準)
実施例2で得られた結果を基に、NCgl0862遺伝子が過発現された場合、実際にリシン生産能向上を誘導するか否かということを確認するために、染色体上のNCgl0862遺伝子のプローモーターを交替させるためのベクターを作成した。そのために、lysC遺伝子のプローモーターとして、野生型プローモーター(lysCP)と、改良型プローモーターであるlysCP1とを使用した。
配列番号6:TAGGATCCAGAAGGCGCTGGCTT
配列番号7:AGGGATCCTAACATATGGAAGCCGAAGCACCT
配列番号8:AGGTCGACTCATTCGTTCATAATT
配列番号9:TAGGATCCTAGGGAGCCATCTTTTGGGG
配列番号10:TAACATATGTGTGCACCTTTCGATCTACG
前記実施例3で作成した組み換えプラスミドpDZ−lysCP_N0862,pDZ−lysCP1_N0862をコリネバクテリウムグルタミクムKCCM11016Pに、電気パルス法で形質転換させ(Van der Rest et al., Appl Microbiol Biotechnol 52: 541-545, 1999)、一般的に知られている染色体相同組み換えによって、染色体上のNCgl0862遺伝子のプローモーター部位に、lysCプローモーターが挿入された菌株を、PCR(配列番号5及び8)を介して選別した。選別された組み換え菌株を、コリネバクテリウムグルタミクムKCCM11016P::lysCP_N0862及びKCCM11016P::lysCP1_N0862と命名した。
トランスポゾン遺伝子位置に目的遺伝子を挿入するように、pDZベクターから考案されたpDZTNベクターを基本ベクターとして使用し、前記実施例2のNCgl0862遺伝子を染色体上に追加挿入するためのベクターを考案及び作成した。
配列番号13:GCAGGCGGTGAGCTTGTCAC
前記実施例5で作成したベクターpDZTN−N0862を、染色体上での相同組み換えによって、L−リジン生産菌株であるコリネバクテリウムグルタミクムKCCM11016Pに形質転換させた。その後、PCR(配列番号12及び13)方法でコロニーを選択的に分離し、KCCM11016P::N0862−Tnと命名した。KCCM11016P::N0862−Tnと対照群とを、実施例2と同一の方法で培養し、培養液中のL−リジン濃度を分析した(表3)。
前記実施例5で作成したベクターpDZTN−N0862を、L−リジン生合成経路構成遺伝子7種が、染色体上に追加挿入されたリシン生産菌株であるコリネバクテリウムグルタミクムKCCM10770Pに形質転換させた。その後、PCR方法で、NCgl0862遺伝子が染色体上に追加挿入された菌株を選別し、コリネバクテリウムグルタミクムKCCM10770P::N0862−Tnと命名した。実施例2と同一の方法で培養し、培養液中のL−リジンの濃度を分析した(表4)。
コリネバクテリウムグルタミクムに属する他の菌株での効果も確認するために、前記実施例5で作成したベクターpDZTN−N0862を、L−リジン生産能向上関連3種の遺伝子変異を有するリシン生産菌株であるコリネバクテリウムグルタミクムCJ3Pに形質転換させた。その後、PCR方法で、NCgl0862遺伝子が、染色体上に追加挿入された菌株を選別し、コリネバクテリウムグルタミクムCJ3P::N0862−Tnと命名した。実施例2と同一の方法で培養し、そこから回収されたL−リジンの濃度を分析した(表5)。
コリネバクテリウムグルタミクムに属する他の菌株での効果も確認するために、前記実施例5のような方法で、L−リジン生産菌株であるコリネバクテリウムグルタミクムKCCM11347P(大韓民国登録特許第1994−0001307号)に、pDZTN−N0862を導入し、KCCM11347P::N0862−Tnと命名した。実施例2と同一の方法で培養し、そこから回収されたL−リジンの濃度を分析した(表6)。
KCCM11430P
Claims (4)
- 配列番号1のアミノ酸配列をコーディングするポリヌクレオチドの発現が強化された、L−リジン生産能を有するコリネバクテリウム属微生物。
- 前記発現強化は、コピー数増加、発現調節配列の操作、またはその組み合わせによるものであることを特徴とする請求項1に記載の微生物。
- 前記微生物は、コリネバクテリウムグルタミクムであることを特徴とする請求項1に記載の微生物。
- 培地において請求項1に記載の微生物を培養する段階と、
前記微生物または前記培地中のL−リジンを得る段階と、
を含む、L−リジンを生産する方法。
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KR1020130128634A KR101498630B1 (ko) | 2013-10-28 | 2013-10-28 | L-라이신 생산능이 향상된 코리네박테리움 속 미생물 및 이를 이용한 l-라이신 생산방법 |
PCT/KR2014/008932 WO2015064917A1 (ko) | 2013-10-28 | 2014-09-25 | L-라이신 생산능이 향상된 코리네박테리움 속 미생물 및 이를 이용한 l-라이신 생산방법 |
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KR101766964B1 (ko) * | 2015-08-27 | 2017-08-09 | 씨제이제일제당 (주) | L-라이신 생산능을 가지는 코리네박테리움 속 미생물 및 이를 이용한 l-라이신 생산방법 |
KR101863456B1 (ko) | 2016-11-15 | 2018-06-01 | 씨제이제일제당 (주) | L-라이신을 생산하는 코리네박테리움 속 미생물 및 이를 이용한 l-라이신의 생산방법 |
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US8932861B2 (en) * | 2008-04-10 | 2015-01-13 | Cj Cheiljedang Corporation | Transformation vector comprising transposon, microorganisms transformed with the vector, and method for producing L-lysine using the microorganism |
KR101126041B1 (ko) * | 2008-04-10 | 2012-03-19 | 씨제이제일제당 (주) | 트랜스포존을 이용한 형질전환용 벡터, 상기 벡터로형질전환된 미생물 및 이를 이용한 l-라이신 생산방법 |
KR101335853B1 (ko) | 2011-12-01 | 2013-12-02 | 씨제이제일제당 (주) | L-아미노산 및 리보플라빈을 동시에 생산하는 미생물 및 이를 이용한 l-아미노산 및 리보플라빈을 생산하는 방법 |
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2013
- 2013-10-28 KR KR1020130128634A patent/KR101498630B1/ko active IP Right Grant
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- 2014-09-25 RU RU2016114418A patent/RU2667425C2/ru active
- 2014-09-25 CN CN201480059300.5A patent/CN105849249B/zh active Active
- 2014-09-25 JP JP2016550437A patent/JP6286571B2/ja active Active
- 2014-09-25 WO PCT/KR2014/008932 patent/WO2015064917A1/ko active Application Filing
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BR112016009324B1 (pt) | 2023-03-28 |
RU2667425C2 (ru) | 2018-09-19 |
KR101498630B1 (ko) | 2015-03-04 |
BR112016009324A2 (pt) | 2017-09-19 |
US20160251687A1 (en) | 2016-09-01 |
JP2016533771A (ja) | 2016-11-04 |
EP3064569A1 (en) | 2016-09-07 |
CN105849249A (zh) | 2016-08-10 |
CN105849249B (zh) | 2019-11-15 |
US9758801B2 (en) | 2017-09-12 |
EP3064569A4 (en) | 2017-06-07 |
MY181203A (en) | 2020-12-21 |
WO2015064917A1 (ko) | 2015-05-07 |
RU2016114418A (ru) | 2017-12-06 |
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