JP6526058B2 - L−リジンを生産するコリネバクテリウム属微生物、及びそれを利用したl−リジンの生産方法 - Google Patents
L−リジンを生産するコリネバクテリウム属微生物、及びそれを利用したl−リジンの生産方法 Download PDFInfo
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- JP6526058B2 JP6526058B2 JP2016567671A JP2016567671A JP6526058B2 JP 6526058 B2 JP6526058 B2 JP 6526058B2 JP 2016567671 A JP2016567671 A JP 2016567671A JP 2016567671 A JP2016567671 A JP 2016567671A JP 6526058 B2 JP6526058 B2 JP 6526058B2
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- lysine
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- corynebacterium
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Description
コリネバクテリウムグルタミクムのオキサロ酢酸デカルボキシラーゼは、配列番号1と記載されるアミノ酸配列を有し、それを暗号化するodx遺伝子(配列番号2)を、部位特異的遺伝子欠失(site specific gene disruption)によって不活性化させるために、下記の方法でプラスミドベクターを作製した。まず、アメリカ国立保健院の遺伝子銀行(NIH Genbank)を根にして、odx遺伝子の塩基配列を確保し、それを基に、odx遺伝子の不活性化断片を作製するためのプライマーを合成した。
配列番号4:5’−GGGTTGCCCAGCTTGCCGATCACGGGCGGTGAGGTTAGCT−3’
配列番号5:5’−AGCTAACCTCACCGCCCGTGATCGGCAAGCTGGGCAACCC−3’
配列番号6:5’−TCTAGAGGTTGCTGCGGATTCTGATT−3’
実施例1で作製したpDZ−Δodxを、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とコリネバクテリウムグルタミクムKCCM11347Pとに、電気パルス法(Appl. Microbiol. Biothcenol. (1999) 52: 541-545)にそれぞれ形質転換した後、カナマイシン(kanamycin)25mg/Lを含んだ選別培地で形質転換菌株を獲得した。二次組換え過程(cross-over)でゲノム上に挿入されたDNA断片Δodxによって、odx遺伝子が不活性化された菌株を獲得し、それぞれKCCM11016P/Δodx、KCCM11347P/Δodxと命名した。
ブドウ糖20g、ペプトン10g、酵母抽出物10g、尿素5g、KH2PO4 4g、K2HPO4 8g、MgSO4・7H2O 0.5g、ビオチン100μg、チアミンHCl 1,000ug(工程水1リットル基準)
*生産培地(pH7.0)の組成:
ブドウ糖80g、糖蜜または前処理糖蜜(還元糖として)20g、とうもろこし浸漬液(corn steep liquor)5g、(NH4)2SO4 40g、尿素4g、KH2PO4 1g、NaCl 2.5g、MgSO4・7H2O 1g、FeSO4・7H2O 10mg、MnSO4・5H2O 10mg、ビオチン100μg、チアミン塩酸塩200μg、CaCO3 40g、必要時にL−ロイシン0.4g、必要時にL−スレオニン0.1g、必要時にL−メチオニン0.1g(工程水1リットル基準)
実施例1で作製したpDZ−Δodxを、L−リジン生合成経路が強化された特徴を有するL−リジン生産菌株コリネバクテリウムグルタミクムKCCM10770P(韓国登録特許第10−0924065号)に、実施例2と同一方法で形質転換し、形質転換株を作製し、KCCM10770P/Δodxと命名した。
実施例1で作製したpDZ−Δodxを、野生株由来のL−リジン生産菌株コリネバクテリウムグルタミクムCJ3P(Binder et al. Genome Biology 2012, 13: R40, pyc (P458S), hom (V59A), lysC (T311I))に、実施例2と同一方法で形質転換し、形質転換株を作製し、CJ3P/Δodxと命名した。
Claims (4)
- L−リジン生合成経路が強化され、且つ配列番号1のアミノ酸配列を有するオキサロ酢酸デカルボキシラーゼが不活性化された、L−リジンを生産するコリネバクテリウム属微生物であって、前記経路の強化がaspB遺伝子、lysC遺伝子、asd遺伝子、dapA遺伝子、dapB遺伝子及びlysA遺伝子の導入であり、未改変の微生物と比較してL−リジンの生産能が増加された、前記コリネバクテリウム属微生物。
- 前記コリネバクテリウム属微生物が、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記載のコリネバクテリウム属微生物。
- オキサロ酢酸デカルボキシラーゼをコードする遺伝子の欠損又は欠失突然変異を含む、請求項1記載のコリネバクテリウム属微生物。
- 請求項1〜3のいずれか1項記載の微生物を培養して培養物を修得する段階と、
前記培養物又は微生物からL−リジンを回収する段階と、
を含む、L−リジンの生産方法。
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KR1020140057966A KR101539370B1 (ko) | 2014-05-14 | 2014-05-14 | L-라이신을 생산하는 코리네박테리움 속 미생물 및 이를 이용한 l-라이신의 생산방법 |
PCT/KR2015/004092 WO2015174655A1 (ko) | 2014-05-14 | 2015-04-24 | L-라이신을 생산하는 코리네박테리움 속 미생물 및 이를 이용한 l-라이신의 생산방법 |
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JP2018247356A Pending JP2019115341A (ja) | 2014-05-14 | 2018-12-28 | L−リジンを生産するコリネバクテリウム属微生物、及びそれを利用したl−リジンの生産方法 |
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KR101917480B1 (ko) * | 2016-12-29 | 2018-11-09 | 씨제이제일제당 (주) | L-라이신을 생산하는 코리네박테리움 속 미생물 및 이를 이용한 l-라이신의 생산방법 |
EP3456833A1 (en) | 2017-09-18 | 2019-03-20 | Evonik Degussa GmbH | Method for the fermentative production of l-amino acids |
KR101947945B1 (ko) * | 2018-01-25 | 2019-02-13 | 씨제이제일제당 (주) | L-아미노산을 생산하는 코리네박테리움 속 미생물 및 이를 이용한 l-아미노산의 생산방법 |
RU2019128538A (ru) | 2018-09-26 | 2021-03-11 | Эвоник Оперейшенс ГмбХ | Способ ферментативного получения l-лизина |
CN116555136A (zh) * | 2022-01-30 | 2023-08-08 | 廊坊梅花生物技术开发有限公司 | 一种修饰的棒状杆菌属微生物及其构建方法与应用 |
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JPS559759A (en) * | 1978-07-07 | 1980-01-23 | Ajinomoto Co Inc | Preparation of l-lysine by fermentation |
US6872553B2 (en) * | 1999-10-20 | 2005-03-29 | Degussa Ag | Nucleotide sequences which code for the pck gene |
JP4623825B2 (ja) * | 1999-12-16 | 2011-02-02 | 協和発酵バイオ株式会社 | 新規ポリヌクレオチド |
MXPA06003775A (es) * | 2004-01-30 | 2006-06-14 | Ajinomoto Kk | Microorganismo productor de l-aminoacido y metodo para la produccion de l-aminoacido. |
KR100789271B1 (ko) * | 2005-11-30 | 2008-01-02 | 씨제이 주식회사 | L-라이신 생산능이 향상된 코리네박테리움 속 미생물 및그를 이용하여 l-라이신을 생산하는 방법 |
KR20070060798A (ko) * | 2005-12-09 | 2007-06-13 | 씨제이 주식회사 | 피에이엔 디 유전자가 파괴된 코리네박테리움을 이용한엘-라이신의 제조방법 |
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KR101231897B1 (ko) * | 2010-08-03 | 2013-02-08 | 한국과학기술원 | 카다베린 고생성능을 가지는 변이 미생물 및 이를 이용한 카다베린의 제조방법 |
KR101285945B1 (ko) * | 2011-05-23 | 2013-07-12 | 씨제이제일제당 (주) | L-라이신 생산능이 향상된 코리네박테리움 속 미생물 및 이를 이용한 l-라이신의 제조방법 |
US20150203824A1 (en) * | 2012-07-26 | 2015-07-23 | Joule Unlimited Technologies, Inc. | Methods and compositions for the augmentation of pyruvate and acetyl-coa formation |
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