BIOTECHNOLOGISCHE HERSTELLUNG VON 3-HYDROXYISOBUTTERSÄURE
    1.
    发明公开
    BIOTECHNOLOGISCHE HERSTELLUNG VON 3-HYDROXYISOBUTTERSÄURE 审中-公开
    生物技术制造3-羟基

    公开(公告)号:EP2788494A1

    公开(公告)日:2014-10-15

    申请号:EP12784273.0

    申请日:2012-11-14

    IPC分类号: C12P7/42 C12N15/52 C12N9/02

    摘要: The invention relates to a method having the steps of a) providing isobutyric acid, b) bringing the isobutyric acid into contact with the combination of isobutyrate kinase and phosphotransisobutyrylase and/or isobutyryl-coenzyme A-synthetase/ligase and/or isobutyrate-coenzyme A-transferase, c) bringing the product of step a) into contact with isobutyryl-coenzyme A-dehydrogenase, d) bringing the product of step b) into contact with methacrylyl-coenzyme A-hydratase, and e) hydrolyzing the product of step d) with the formation of 3-hydroxyisobutyric acid. At least one of the enzymes is used in the form of a cell which comprises an activity of 3-hydroxyisobutyric acid dehydrogenase or a variant thereof, said activity being reduced with respect to the wild type of the cell. The invention also relates to a cell which comprises at least one enzyme of the group comprising isobutyryl-coenzyme A-synthetase/ligase, isobutyrate-coenzyme A-transferase, isobutyrate-kinase, phosphotransisobutyrylase, isobutyryl-coenzyme A-dehydrogenase, methacrylyl-coenzyme A-hydratase, and 3-hydroxisobutyryl-coenzyme A-hydrolase and which has an activity of a 3-hydroxyisobutyric acid dehydrogenase or a variant thereof, said activity being reduced with respect to the wild type of the cell. Additionally, the cell preferably has a monooxygenase, even more preferably a monooxygenase of the AlkBGT type or a variant thereof. The invention also relates to the use of such a cell for producing 3-hydroxyisobutyric acid