There are disclosed a reductase having good heat stability, which resulted in decrease in reaction time and improvement of reaction efficiency. Specifically, disclosed is an enzyme having an amino acid sequence of SEQ ID NO:1 in which at least one of the amino acids of the positions 245 and 271 of the amino acid sequence of SEQ ID NO:1 is replaced with another amino acid(s); a polynucleotide having a nucleotide sequence that encodes the amino acid sequence of said reductase; a vector containing said polynucleotide; a transformant containing said polynucleotide or said vector, and the like.
本发明公开了一种具有良好热稳定性的还原酶,其导致反应时间减少和反应效率提高。具体而言,本发明公开了一种酶,其具有
SEQ ID NO:1的
氨基酸序列,其中
SEQ ID NO:1的
氨基酸序列的位置245和271中的至少一个
氨基酸被替换为另一种
氨基酸;编码所述还原酶的
氨基酸序列的核苷酸序列的多聚核苷酸;包含所述多聚核苷酸的载体;包含所述多聚核苷酸或所述载体的转化体等。