The present invention provides a novel polypeptide efficiently forming (R)-N-benzyl-3-pyrrolidinol, a polynucleotide coding for said polypeptide, and use of the same. The present invention relates to a polypeptide having the following physical and chemical properties (1) to (4): (1) activity: acting on N-benzyl-3-pyrrolidinone with NADH or NADPH as a coenzyme, to form (R)-N-benzyl-3-pyrrolidinol; (2) optimum pH for activity: 5.5 to 6.0; (3) optimum temperature for activity: 50° C. to 55° C.; (4) molecular weight: about 55,000 as determined by gel filtration analysis, about 28,000 as determined by SDS polyacrylamide gel electrophoresis analysis. The present invention also relates to a polypeptide comprising the amino acid sequence shown under SEQ ID NO:1 in the sequence listing, a polynucleotide coding for said polypeptide, and a transformant producing said polypeptide at high levels.
本发明提供了一种高效形成(R)-N-苄基-3-
吡咯醇的新型
多肽、编码该
多肽的多核苷酸以及其用途。本发明涉及一种具有以下物理和
化学性质(1)至(4)的
多肽:(1)活性:利用
NADH或
NADPH作为辅酶对N-苄基-3-
吡咯酮进行作用,形成(R)-N-苄基-3-
吡咯醇;(2)最适活性pH:5.5至6.0;(3)最适活性温度:50°C至55°C;(4)分子量:通过凝胶过滤分析确定为约55,000,通过
SDS聚
丙烯酰胺凝胶电泳分析确定为约28,000。本发明还涉及一种包含序列列表中
SEQ ID NO:1所示
氨基酸序列的
多肽、编码该
多肽的多核苷酸以及产生高
水平该
多肽的转化体。