TRANSFORMED MICROORGANISM FOR PRODUCING PHA COPOLYMER COMPRISING 3HH MONOMER UNIT AT HIGH COMPOSITION RATE AND METHOD FOR PRODUCING PHA USING SAME
申请人:Kaneka Corporation
公开号:EP3741840A1
公开(公告)日:2020-11-25
The present application provides: a transformed microorganism for producing a PHA copolymer containing 3HH monomer unit at a higher composition ratio, specifically, a transformed microorganism comprising a PHA synthase gene capable of synthesizing a PHA copolymer containing 3HH monomer unit and a gene encoding a protein having (R)-specific enoyl-CoA hydratase activity, characterized in that, in the transformed microorganism, the expression of a gene encoding at least one β-ketothiolase enzyme having thiolysis activity for β-keto-(C6) acyl-CoA (i.e., β-ketohexanoyl-CoA) is inhibited, thereby losing or reducing the enzyme activity; and a method for producing a PHA copolymer containing 3HH monomer unit, comprising a step of culturing the transformed microorganism.
本申请提供了一种转化微生物,用于以较高的组成比生产含有 3HH 单体单元的 PHA 共聚物,具体地说,是一种转化微生物,包含能够合成含有 3HH 单体单元的 PHA 共聚物的 PHA 合成酶基因和编码具有(R)-特异性烯酰-CoA 水合酶活性的蛋白质的基因、其特征在于,在转化的微生物中,表达至少一种编码对 β-酮-(C6)酰基-CoA 具有硫解活性的 β-酮硫醇酶的基因(即:β-酮-(C6)酰基-CoA巯基酶)。e.,一种生产含有 3HH 单体单元的 PHA 共聚物的方法,包括培养转化微生物的步骤。