申请人:KANEKA CORPORATION
公开号:EP1553170A1
公开(公告)日:2005-07-13
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.
本发明提供了一种可有效形成(R)-N-苄基-3-吡咯烷醇的新型多肽、编码所述多肽的多核苷酸及其用途。
本发明涉及一种具有以下物理和化学特性(1)至(4)的多肽:
(1) 活性:以 NADH 或 NADPH 为辅酶作用于 N-苄基-3-吡咯烷酮,生成 (R)-N-苄基-3-吡咯烷醇;
(2) 活性的最佳 pH 值:5.5 至 6.0;
(3) 活性的最佳温度:50°C 至 55°C;
(4) 分子量:凝胶过滤分析测定约为 55 000,SDS 聚丙烯酰胺凝胶电泳分析测定约为 28 000。
本发明还涉及一种多肽,其包含序列表中 SEQ ID NO:1 所示的氨基酸序列、编码所述多肽的多核苷酸以及高水平生产所述多肽的转化体。