JP6860565B2 - L−リジン生産能を有するコリネバクテリウム属微生物及びそれを用いたl−リジン生産方法 - Google Patents
L−リジン生産能を有するコリネバクテリウム属微生物及びそれを用いたl−リジン生産方法 Download PDFInfo
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- JP6860565B2 JP6860565B2 JP2018528922A JP2018528922A JP6860565B2 JP 6860565 B2 JP6860565 B2 JP 6860565B2 JP 2018528922 A JP2018528922 A JP 2018528922A JP 2018528922 A JP2018528922 A JP 2018528922A JP 6860565 B2 JP6860565 B2 JP 6860565B2
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- 235000019796 monopotassium phosphate Nutrition 0.000 description 1
- 229960002715 nicotine Drugs 0.000 description 1
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 235000014593 oils and fats Nutrition 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
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- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 102000020233 phosphotransferase Human genes 0.000 description 1
- 229920001522 polyglycol ester Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
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- 238000012216 screening Methods 0.000 description 1
- 238000011218 seed culture Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 229940001941 soy protein Drugs 0.000 description 1
- 239000004455 soybean meal Substances 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 235000019710 soybean protein Nutrition 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000013076 target substance Substances 0.000 description 1
- 235000019157 thiamine Nutrition 0.000 description 1
- KYMBYSLLVAOCFI-UHFFFAOYSA-N thiamine Chemical compound CC1=C(CCO)SCN1CC1=CN=C(C)N=C1N KYMBYSLLVAOCFI-UHFFFAOYSA-N 0.000 description 1
- 239000011721 thiamine Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 241001515965 unidentified phage Species 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
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Description
実施例1:トランスポゾンを用いたランダム突然変異ライブラリの作製
リジン生産能が増加された菌株を得るために下記の方法によりベクターライブラリを作製した。
ブドウ糖10g、ペプトン10g、牛肉抽出物5g、酵母抽出物5g、脳心臓浸出液(Brain Heart Infusion)18.5g、生理的食塩水(NaCl)2.5g、尿素2g、ソルビトール91g、寒天20g(蒸留水1リットル基準)
前記実施例1で確保された約20,000個のコロニーをそれぞれ300μLの下記の選別培地に接種して96ディープウェルプレート(96−deep well plate)で32℃、1000rpmで約24時間培養した。
ブドウ糖10g、硫酸アンモニウム(ammonium sulfate)5.5g、MgSO4・7H2O 1.2g、KH2PO4 0.8g、K2HPO4 16.4g、ビオチン100μg、チアミンHCL 1000μg、パントテン酸カルシウム2000μg、ニコチンアミド2000μg(蒸留水1リットル基準)
前記実施例2で選別された10種の突然変異株を対象としてL−リジン生産能が再現性よく増加された菌株を最終選別するために、下記の培地を用いたフラスコ培養を実施した。培養が完了した後、HPLCを用いて培養液内のL−リジン濃度を分析し、各突然変異株のL−リジン生産濃度を表1に示した。
ブドウ糖20g、ペプトン10g、酵母抽出物5g、尿素1.5g、KH2PO4 4g、K2HPO4 8g、MgSO4・7H2O 0.5g、ビオチン100μg、チアミンHCl 1000μg、パントテン酸カルシウム2000μg、ニコチンアミド2000μg(蒸溜水1リットル基準)
ブドウ糖100g、(NH4)2SO4 40g、大豆タンパク質2.5g、トウモロコシ浸漬固形粉(Corn Steep Solids)5g、尿素3g、KH2PO4 1g、MgSO4・H2O 0.5g、ビオチン100μg、チアミン塩酸塩1000μg、パントテン酸カルシウム2000μg、ニコチンアミド3000μg、CaCO3 30g(蒸溜水1リットル基準)。
本実施例では、前記実施例3で最終選別された変異体株を対象としてトランスポゾンのランダムな挿入により欠損した遺伝子を同定した。
プライマー2(配列番号4):CTACCCTGTGGAACACCTACATCT
前記実施例5で作製した組換えプラスミドpDZ−△MT10DS1を、染色体上における相同組換えによって、L−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に形質転換させた(van der Rest et al.,Appl Microbiol Biotechnol 52:541−545,1999)。
ブドウ糖20g、ペプトン10g、酵母抽出物5g、尿素1.5g、KH2PO4 4g、 K2HPO4 8g、MgSO4・7H2O 0.5g、ビオチン100μg、チアミンHCL1000μg、パントテン酸カルシウム2000μg、ニコチンアミド2000μg(蒸留水1リットル基準)
ブドウ糖100g、(NH4)2SO4 40g、大豆タンパク質2.5g、トウモロコシ浸漬固形粉(corn steep solids)5g、尿素3g、KH2PO4 1g、MgSO4・H2O 0.5g、ビオチン100μg、チアミン塩酸塩1000μg、パントテン酸カルシウム2000μg、ニコチンアミド3000μg、CaCO3 30g(蒸溜水1リットル基準)。
L−リシンを生産する他のコリネバクテリウム・グルタミクムに属する菌株においても上述した効果と同様の効果が得られるかを確認するために、前記実施例6と同様の方法でL−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KCCM11347P(上記微生物は、KFCC10750の番号で公開されたが、ブダペスト条約上の国際寄託機関に再寄託されてKCCM11347Pの番号が与えられた。韓国登録特許第10−0073610号公報)を対象として、配列番号2のヌクレオチド配列を含む遺伝子が欠損した菌株を作製してKCCM11347P−△MT10DS1と命名した。
したがって、実施例6の結果と同様に、コリネバクテリウム属微生物から、配列番号2のヌクレオチド配列を含む遺伝子を欠損させることによりL−リジン生産能を向上させることができるということが確認された。
L−リシンを生産する他のコリネバクテリウム・グルタミクムに属する菌株においても上述した効果と同様の効果が得られるかを確認するために、前記実施例6と同様の方法で 野生株に3種の変異[pyc(P458S)、hom(Vl59A)、lysC(T3111I)]を導入し、L−リジン生成能を有するようになったコリネバクテリウム・グルタミクムCJ3P(Binder et al.Genome Biology 2012,13:R40)を対象として、配列番号2のヌクレオチド配列を含む遺伝子が欠損した菌株を作製してCJ3P−△MT10DS1と命名した。
Claims (1)
- 微生物を培地で培養するステップであって、
前記微生物が、改変されていない微生物と比較してL−リジンの生産が増加している改変されたコリネバクテリウム・グルタミクム微生物であり、(i)配列番号1のアミノ酸配列を含むタンパク質が不活性化される、または、(ii)配列番号2の塩基配列を有する遺伝子によってコードされるタンパク質が不活性化される、ステップと;
前記微生物または培養培地からL−リジンを回収するステップと;を含む、
L−リジンを生産する方法。
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KR1020150120871A KR101740807B1 (ko) | 2015-08-27 | 2015-08-27 | L-라이신 생산능을 가지는 코리네박테리움 속 미생물 및 이를 이용한 l-라이신 생산방법 |
PCT/KR2016/008231 WO2017034164A1 (ko) | 2015-08-27 | 2016-07-27 | L-라이신 생산능을 가지는 코리네박테리움 속 미생물 및 이를 이용한 l-라이신 생산방법 |
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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 |
US20080096242A1 (en) * | 2004-09-01 | 2008-04-24 | Agrotechnology And Food Innovations B.V. | Enhanced Substrate Conversion Efficiency Of Fermentation Processes |
KR100789270B1 (ko) * | 2005-11-30 | 2008-01-02 | 씨제이 주식회사 | L-라이신 생산능이 향상된 코리네박테리움 속 미생물 및그를 이용하여 l-라이신을 생산하는 방법 |
KR100789271B1 (ko) * | 2005-11-30 | 2008-01-02 | 씨제이 주식회사 | L-라이신 생산능이 향상된 코리네박테리움 속 미생물 및그를 이용하여 l-라이신을 생산하는 방법 |
KR100838035B1 (ko) | 2006-12-29 | 2008-06-12 | 씨제이제일제당 (주) | L-라이신 생산능이 향상된 코리네박테리움 속 미생물 및그를 이용한 l-라이신 생산 방법 |
KR101582008B1 (ko) * | 2013-10-15 | 2015-12-31 | 씨제이제일제당 (주) | 생물막 형성 억제 활성을 가지는 유전자 및 이 유전자가 불활성화된 균주를 이용한 l-라이신 생산 방법 |
KR101565770B1 (ko) * | 2013-12-13 | 2015-11-04 | 씨제이제일제당 주식회사 | L-라이신 생산능이 향상된 코리네박테리움 속 미생물 및 이를 이용한 l-라이신을 생산하는 방법 |
KR101530819B1 (ko) * | 2014-05-08 | 2015-06-22 | 씨제이제일제당 (주) | L-라이신 생산능이 향상된 미생물 및 이를 이용한 l-라이신 생산방법 |
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- 2016-07-27 CN CN201680049821.1A patent/CN108138191B/zh active Active
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- 2016-07-27 JP JP2018528922A patent/JP6860565B2/ja active Active
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CN108138191A (zh) | 2018-06-08 |
HUE048849T2 (hu) | 2020-08-28 |
JP2018523496A (ja) | 2018-08-23 |
KR20170025045A (ko) | 2017-03-08 |
EP3342869B1 (en) | 2020-03-18 |
EP3342869A4 (en) | 2019-02-06 |
US20180258452A1 (en) | 2018-09-13 |
ES2795437T3 (es) | 2020-11-23 |
BR112018003756A2 (pt) | 2018-09-25 |
PL3342869T3 (pl) | 2020-08-24 |
RU2685482C1 (ru) | 2019-04-18 |
KR101740807B1 (ko) | 2017-05-26 |
US10889843B2 (en) | 2021-01-12 |
CN108138191B (zh) | 2021-10-15 |
WO2017034164A1 (ko) | 2017-03-02 |
EP3342869A1 (en) | 2018-07-04 |
MY190149A (en) | 2022-03-31 |
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