JP2012507992A - 1,2−プロパンジオールの発酵製造のための基質としてのスクロースの使用 - Google Patents
1,2−プロパンジオールの発酵製造のための基質としてのスクロースの使用 Download PDFInfo
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- JP2012507992A JP2012507992A JP2011535012A JP2011535012A JP2012507992A JP 2012507992 A JP2012507992 A JP 2012507992A JP 2011535012 A JP2011535012 A JP 2011535012A JP 2011535012 A JP2011535012 A JP 2011535012A JP 2012507992 A JP2012507992 A JP 2012507992A
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- sucrose
- microorganism
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- propanediol
- sugar
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Abstract
Description
これら1,2−プロパンジオールの製造のための化学的方法の欠点に照らすと、生合成を魅力的な選択肢である。微生物による糖からの1,2−プロパンジオールの天然生産に関して2つの経路が同定されている。1つ目の経路では、6−デオキシ糖(例えば、L−ラムノースまたはL−フコース)がジヒドロキシアセトンリン酸および(S)−ラクトアルデヒドに開裂され、さらに(S)−1,2−プロパンジオールへと還元することができる(Badia et al, 1985)。この経路は大腸菌(E. coli)で機能するものの、デオキシヘキソースのコストが高いために経済上実現可能な方法をもたらし得ない。2つ目の経路は、解糖経路とその後のメチルグリオキサール経路を介した汎用糖(例えば、グルコースまたはキシロース)の代謝である。ジヒドロキシアセトンリン酸はメチルグリオキサールへ変換され、これがラクトアルデヒドまたはアセトールのいずれかへ還元され得る。その後、これら2つの化合物は2回目の還元反応を受け、1,2−プロパンジオールを生じ得る。この経路は、クロストリジウム・スフェノイデス(Clostridium sphenoides)およびサーモアナエロバクター・サーモサッカロリチカム(Thermoanaerobacter thermosaccharolyticum)などの天然(R)−1,2−プロパンジオール生産株によって用いられている。これらの2つの微生物は、種々の糖類、すなわち、単糖類(六炭糖としてはD−グルコース、D−マンノース、D−ガラクトース、および五炭糖としてはD−キシロースまたはL−アラビノース)または二糖類(ラクトースまたはセロビオース)または混合物から1,2−プロパンジオールを製造するために用いられている(Tran Din and Gottschalk, 1985, Cameron and Cooney, 1986, Sanchez-Rivera et al, 1987, Altaras et al, 2001)。得られた最高性能は力価9g/lであり、グルコースからの収率は0.2g/gであった(Sanchez-Rivera et al, 1987)。しかしながら、これらの生物で得られる性能の改良は、利用可能な遺伝的手段が不足しているために限られていると思われる。同じ合成経路が大腸菌または他の腸内細菌科でも機能的であり、この微生物におけるD−グルコースまたはD−フルクトースに限定された炭素源を用いた1,2−プロパンジオールの製造に関するいくつかの検討がCameronのグループ(Cameron et al, 1998, Altaras and Cameron, 1999, Altaras and Cameron, 2000)およびBennettのグループ(Huang et al, 1999, Berrios-Rivera et al, 2003)によりなされた。嫌気的流加発酵槽で得られた最良の結果は、1,2−プロパンジオールの生産率4.5g/lであり、グルコースからの収率は0.19g/gであった(Altaras and Cameron, 2000)。同じアプローチで得られたものでありながら、より低い力価および収率という結果も特許WO98/37204に記載されているが、違う炭素源、すなわち、ガラクトース、ラクトース、スクロースおよびキシロースを用いたものであり、しなかながらグルコースもまた用いられていた。二糖類(ラクトースおよびスクロース)で得られた力価は極めて低かった(それぞれ6mg/lおよび7mg/l)。特許出願WO2005/073364には、合理的に設計され、進化させた大腸菌株を用い、より良好な製造結果が記載されている。1.8g/lの1,2−プロパンジオール力価が得られ、収率は消費グルコース1g当たり0.35gであった。また、特許WO99/28481には、組換え酵母を用いた1,2−プロパンジオールおよびヒドロキシアセトンの製造が記載されている。
1,2−プロパンジオールを生産する微生物を、スクロースの供給源を含んでなる適切な培地で培養すること、および
生産された1,2−プロパンジオールを回収すること
を含んでなり、該微生物が、1,2−プロパンジオールの生産のための唯一の炭素源としてスクロースを利用することができるものである方法に関する。
大腸菌株MG1655 lpd*,ΔtpiA、ΔpflAB,ΔadhE,ΔldhA::Cm,ΔgloA、ΔaldA,ΔaldB,Δeddを嫌気性条件下、ケモスタット培養で進化させ、WO2008/116852に記載のように最小培地での増殖に適応させた。この株を進化株大腸菌MG1655 lpd*,ΔtpiA、ΔpflAB,ΔadhE,ΔldhA::Cm,ΔgloA、ΔaldA,ΔaldB,Δeddと呼んだ。
・Schmid et al. (1982)に記載されているものなどのスクロース−PTS系をコードする遺伝子を担持するpUR400
・Jahreis et al. (2002)に記載されているものなどのスクロース透過酵素およびキナーゼ系をコードする遺伝子を担持するpKJL101.1
・進化型大腸菌MG1655 lpd*,ΔtpiA、ΔpflAB,ΔadhE,ΔldhA,ΔgloA、ΔaldA,ΔaldB,Δedd(pUR400)および
・進化型大腸菌MG1655 lpd*,ΔtpiA、ΔpflAB,ΔadhE,ΔldhA,ΔgloA、ΔaldA,ΔaldB,Δedd(pKJL101.1)
と呼んだ。
実施例1に記載されているように得られた株と対照として用いるプラスミドを含まない株を、エルレンマイヤーフラスコアッセイにて、好気性条件下、唯一の炭素源として20g/lグルコースまたはスクロースを含む最小培地MML11PG1_100(上記の組成を参照)中で培養した。炭素源としてのグルコースを対照として用いた。
実施例1に記載されているように得られた株を、エルレンマイヤーフラスコアッセイにて、好気性条件下、炭素源としてサトウキビ果汁(20g/lスクロース当量)を含む最小培地MML11PG1_100中で培養した。
実施例1に記載されているように得られた株を、エルレンマイヤーフラスコアッセイにて、好気性条件下、リン酸塩およびアンモニウム((NH4)2HPO4 2.5g/l)、鉄(クエン酸鉄、H2O 0.1g/l)およびチアミン(0.02g/l)を補給しない、または補給した、希釈サトウキビ果汁(20g/lスクロース当量)を含有する培地中で培養した。
Claims (16)
- 発酵により1,2−プロパンジオールを製造する方法であって、
1,2−プロパンジオールを生産する微生物を、スクロースの供給源を含んでなる適切な培地で培養すること、および
生産された1,2−プロパンジオールを回収すること
を含んでなり、該微生物が、1,2−プロパンジオールの生産のための唯一の炭素源としてスクロースを利用することができるものである、方法。 - 微生物が、唯一の炭素源としてスクロースを利用することができるように遺伝的に改変されている、請求項1に記載の方法。
- 微生物が、PTSスクロース利用系をコードする機能的遺伝子を有する、請求項1または2に記載の方法。
- 微生物が、遺伝子scrKYABRの導入により改変されている、請求項3に記載の方法。
- 微生物が、非PTSスクロース利用系をコードする機能的遺伝子を有する、請求項1または2に記載の方法。
- 微生物が、遺伝子cscBKARの導入により改変されている、請求項5に記載の方法。
- 微生物が、細菌、酵母および真菌からなる群から選択される、請求項1〜6のいずれか一項に記載の方法。
- 微生物が、腸内細菌科、バチルス科、クロストリジウム科、ストレプトミセス科およびコリネバクテリア科からなる群から選択される、請求項7に記載の微生物。
- 微生物が、大腸菌(Escherichia coli)、肺炎桿菌(Klebsiella pneumoniae)、サーモアナエロバクター・サーモサッカロリチカム(Thermoanaerobacter thermosaccharolyticum)、クロストリジウム・スフェノイデス(Clostridium sphenoides)またはサッカロミセス・セレビシエ(Saccharomyces cerevisiae) からなる群から選択される、請求項8に記載の微生物。
- スクロースの供給源が、バイオマス、特に、植物バイオマスから得られるものである、請求項1〜9のいずれか一項に記載の方法。
- スクロースの供給源が、サトウキビ、テンサイ、サトウモロコシ、サトウカエデ、サトウヤシおよびブルーアガベからなる群から選択される植物から得られるものである、請求項10に記載の方法。
- スクロースの供給源が、果汁、濃縮果汁またはシロップ、清澄化果汁、糖蜜または結晶化スクロースの形態である、請求項10または11に記載の方法。
- スクロース源が、サトウキビまたはテンサイ工業の最終生成物、中間生成物または副生成物である、請求項10〜12のいずれか一項に記載の方法。
- 適切な培地がスクロースの供給源からなる、請求項1〜13のいずれか一項に記載の方法。
- 適切な培地が、スクロースの供給源に加えて、少なくともリン源および/または窒素源を含有する、請求項1〜13のいずれか一項に記載の方法。
- スクロース源が少なくとも7%のスクロースを含んでなる、請求項1〜15のいずれか一項に記載の方法。
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TWI500768B (zh) * | 2010-07-05 | 2015-09-21 | Metabolic Explorer Sa | 由蔗糖製備1,3-丙二醇之方法 |
WO2012007481A2 (en) | 2010-07-12 | 2012-01-19 | Universiteit Gent | Metabolically engineered organisms for the production of added value bio-products |
US8129170B1 (en) * | 2010-12-06 | 2012-03-06 | E.I. Du Pont De Nemours And Company | Recombinant bacteria having the ability to metabolize sucrose |
US8222000B2 (en) | 2010-12-06 | 2012-07-17 | E I Du Pont De Nemours And Company | Recombinant bacteria having the ability to metabolize sucrose |
US8629243B2 (en) | 2011-08-16 | 2014-01-14 | E I Du Pont De Nemours And Company | Variant sucrose transporter polypeptides that enable faster sucrose utilization in bacteria |
US8673602B2 (en) | 2011-08-16 | 2014-03-18 | E I Du Pont De Nemours And Company | Recombinant bacteria having improved sucrose utilization |
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US8686114B2 (en) | 2012-03-05 | 2014-04-01 | E I Du Pont De Nemours And Company | Variant sucrose transporter polypeptides |
US9017961B2 (en) | 2012-03-05 | 2015-04-28 | E.I. Du Pont De Nemours And Company | Recombinant bacteria comprising novel sucrose transporters |
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US6087140A (en) * | 1997-02-19 | 2000-07-11 | Wisconsin Alumni Research Foundation | Microbial production of 1,2-propanediol from sugar |
JP2007517517A (ja) * | 2004-01-12 | 2007-07-05 | メタボリック エクスプローラ | 1,2−プロパンジオールの産生のための発展型微生物 |
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WO1999028481A1 (en) | 1997-02-19 | 1999-06-10 | Wisconsin Alumni Research Foundation | Microbial production of hydroxyacetone and 1,2-propanediol |
RU2212447C2 (ru) * | 2000-04-26 | 2003-09-20 | Закрытое акционерное общество "Научно-исследовательский институт Аджиномото-Генетика" | Штамм escherichia coli - продуцент аминокислоты (варианты) и способ получения аминокислот (варианты) |
KR100864672B1 (ko) * | 2003-04-02 | 2008-10-23 | 씨제이제일제당 (주) | 클렙시엘라 뉴모니아를 이용한 1,2-프로판디올의 생산방법 |
BRPI0808970B1 (pt) * | 2007-03-23 | 2017-02-14 | Metabolic Explorer Sa | microrganismos e métodos de produção de 1,2-propanodiol e acetol |
WO2008116848A1 (en) | 2007-03-23 | 2008-10-02 | Metabolic Explorer | Metabolically engineered microorganism useful for the production of 1,2-propanediol |
KR101528943B1 (ko) * | 2007-03-23 | 2015-06-15 | 메타볼릭 익스플로러 | 진화 및 합리적 설계의 조합에 의해 수득된 1,2―프로판디올의 생산을 위한 신규한 미생물 |
US20100116848A1 (en) * | 2008-11-13 | 2010-05-13 | Keith Powers | Conduit assembly for a polymer heated hydration system |
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- 2008-11-07 JP JP2011535012A patent/JP2012507992A/ja active Pending
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US6087140A (en) * | 1997-02-19 | 2000-07-11 | Wisconsin Alumni Research Foundation | Microbial production of 1,2-propanediol from sugar |
JP2007517517A (ja) * | 2004-01-12 | 2007-07-05 | メタボリック エクスプローラ | 1,2−プロパンジオールの産生のための発展型微生物 |
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KR101395971B1 (ko) | 2014-05-16 |
DK2346999T3 (da) | 2013-09-30 |
CA2741427A1 (en) | 2010-05-14 |
CN102272316A (zh) | 2011-12-07 |
WO2010051849A1 (en) | 2010-05-14 |
BRPI0823256B1 (pt) | 2018-08-07 |
KR20110088546A (ko) | 2011-08-03 |
BRPI0823256B8 (pt) | 2020-05-26 |
CN102272316B (zh) | 2014-06-11 |
EP2346999A1 (en) | 2011-07-27 |
EP2346999B1 (en) | 2013-07-24 |
MX2011004842A (es) | 2011-05-30 |
US20150159181A1 (en) | 2015-06-11 |
ES2429305T3 (es) | 2013-11-14 |
US20110217744A1 (en) | 2011-09-08 |
US9617567B2 (en) | 2017-04-11 |
AR074092A1 (es) | 2010-12-22 |
BRPI0823256A2 (pt) | 2014-11-18 |
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