Mutants of PHA synthase from Pseudomonas sp. 6-19 and method for preparing lactate homopolymer or copolymer using the same동일한 것을 사용하는 슈도모나스 스페인 6-19로부터 pha 신타아제의 변종과 젖산염 호모폴리머 또는 공중합체를 제조하기 위한 방법
The present invention relates to polyhydroxyalkanoate synthase (PHA synthase) mutant originated from Pseudomonas sp. 6-19 (KCTC 11027BP) which can prepare lactate polymer and/or copolymer by using lactyl-CoA as a substrate. The present invention relates to a method for preparing lactate polymer and/or copolymer with the synthase mutant. The polyhydroxyalkanoate synthase mutants of the present invention originated from Pseudomonas sp. 6-19 can efficiently prepare lactate polymer and/or copolymer by using as a substrate lactyl-CoA which is difficult to be used as a substrate by conventional polyhydroxyalkanoate synthase.