The present invention provides an L-aminoacylase which is able to produce L-tert-leucine being useful as an intermediate for pharmaceuticals.
A protein which is characterized in being represented by any of the following (a) to (d): (a) a protein coded by a gene consisting of a nucleic acid sequence shown in SEQ ID No: 1; (b) a protein consisting of an amino acid sequence shown in SEQ ID No: 2; (c) a protein coded by a polynucleotide which hybridizes under a stringent condition with a nucleic acid sequence which is complementary to the nucleic acid sequence shown in SEQ ID No: 1 and having an L-succinylaminoacylase activity; and (d) a protein which consists of an amino acid sequence where one or several amino acid (s) is/are substituted, deleted, inserted and/or added in the protein consisting of the amino acid sequence shown in SEQ ID No: 2 and has an L-succinylaminoacylase activity.
本发明提供了一种能够产生L-tert-亮
氨酸的L-
氨基酰酶,该酶可作为制药中间体。一种蛋白质,其特征在于由以下任一表示:(a)由包含在序列号为
SEQ ID No: 1的核酸序列中的
基因编码的蛋白质;(b)由序列号为
SEQ ID No: 2的
氨基酸序列组成的蛋白质;(c)由与序列号为
SEQ ID No: 1中显示的核酸序列互补的核酸序列在严格条件下杂交的多核苷酸编码的蛋白质,具有L-琥珀酰
氨基酰酶活性;以及(d)由一个或多个
氨基酸在序列号为
SEQ ID No: 2中显示的
氨基酸序列组成的蛋白质中被替代、删除、插入和/或添加的
氨基酸,具有L-琥珀酰
氨基酰酶活性。