申请人:Evonik Degussa GmbH
公开号:EP3095872A1
公开(公告)日:2016-11-23
The present invention provides a microbial cell capable of producing at least one alpha amino acid from at least one short chain fatty acid, wherein the cell is genetically modified to comprise
- at least a first genetic mutation that increases the expression relative to the wild type cell of an enzyme E1 capable of catalysing the hydroxylation of the fatty acid to an alpha-hydroxy fatty acid,
- at least a second genetic mutation that increases the expression relative to the wild type cell of an enzyme E2 capable of catalysing the oxidation of the an alpha-hydroxy fatty acid to an alpha ketone, and
- at least a third genetic mutation that increases the expression relative to the wild type cell of enzyme E3 capable of catalysing the oxidation of the alpha ketone to an alpha amino acid wherein the short chain fatty acid is a C4- C10 fatty acid.
本发明提供了一种能从至少一种短链脂肪酸中生产至少一种α-氨基酸的微生物细胞,其中该细胞经基因修饰后包括
- 至少第一基因突变,相对于野生型细胞,该突变增加了能够催化脂肪酸羟基化为α-羟基脂肪酸的酶 E1 的表达、
- 至少第二个基因突变,相对于野生型细胞,增加了能够催化α-羟基脂肪酸氧化成α-酮的酶 E2 的表达量,以及
- 至少第三种基因突变,相对于野生型细胞,增加能催化α-酮氧化成α-氨基酸的酶 E3 的表达量,其中短链脂肪酸是 C4- C10 脂肪酸。