发明名称 |
METHOD FOR MICROBIALLY PRODUCING L-VALINE |
摘要 |
The invention relates to a method for microbially producing L-valine in which the dihydroxy acid synthesis (ilvD) activity and/or the ilvD gene expression is intensified in a microorganism. Alternatively thereto or in combination therewith, the acetohydroxy acid synthesis (ilvBN) activity and isomeroreductase (ilvC) activity and/or the ilvBNC gene expression is intensified in a microorganism. According to the inventive method, microorganisms are preferably used in which the activity of at least one enzyme involved in a metabolic pathway which reduces the formation of L-valine is weakened or eliminated. Microorganisms having a defect mutation in the threonine dehydratase (ilvA) gene and/or having a defect mutation in one or more genes of the pantothenate synthesis are preferably used in the inventive method. |
申请公布号 |
WO0050624(A1) |
申请公布日期 |
2000.08.31 |
申请号 |
WO2000EP01405 |
申请日期 |
2000.02.21 |
申请人 |
FORSCHUNGSZENTRUM JUELICH GMBH;EGGELING, LOTHAR;SAHM, HERMANN |
发明人 |
EGGELING, LOTHAR;SAHM, HERMANN |
分类号 |
C12N1/21;C12N9/00;C12N9/10;C12N9/88;C12P13/06 |
主分类号 |
C12N1/21 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|