摘要:
This invention relates to S-hydroxynitrile lyase having excellent tolerance to heat, organic solvents, and the like, which is obtained by modifying at least one amino acid in the helix D3′, helix A, and β-sheet 2 domains in the amino acid sequence of wild-type S-hydroxynitrile lyase.
摘要:
A method for high-density culture of a microorganism is proposed. This method is characterized by adjusting the cultivation temperature to a level lower than the optimum temperature for growth thereby causing the specific growth rate of the microorganism to reach a level of not more than 20% of the specific growth rate at the optimum temperature for growth. By this method of culture, it is made possible to culture the microorganism at a very high density. Further, this method of culture enables a useful substance, particularly an active type recombinant protein, to be produced in a large amount at a very low cost with high efficiency.
摘要:
This invention relates to a novel high-activity modified S-hydroxynitrile lyase (SHNL). More particularly, this invention relates to novel high-activity modified SHNL that is obtained by substituting amino acids at given sites (14, 44, 66, 94, 103, 118, 122, 125, 127, 129, 147, 148, 152, 212, and 216) or inserting amino acid at a given site (between amino acids 128 and 129) of the amino acid sequence (SEQ ID NO: 2) of wild-type SHNL.
摘要翻译:本发明涉及一种新的高活性修饰的S-羟基腈裂解酶(SHNL)。 更具体地说,本发明涉及通过在给定位点(14,44,66,94,103,118,122,125,127,129,147,148,152,154,144,144,134,144,134,144,134,132,134,144,134,144,134,132,144,134,132,134,134,144,134,144,134,132,144,134,142,144,144,13 212和216)或在野生型SHNL的氨基酸序列(SEQ ID NO:2)的给定位点(第128和129位氨基酸之间)插入氨基酸。
摘要:
A method for efficient production of an S-hydroxynitrile lyase by gene recombination using Escherichia coli is provided. A gene is formed by altering a codon in an S-hydroxyniitrylase gene originating in cassava (Manihot esculenta Crantz) without changing the amino acid sequence thereof till the frequency of codon usage wholly with an amino acid in Escherichia coli reaches a level of not less than 5%. According to the method for the production of an S-hydroxynitrile lyase by the use of the gene, the S-hydroxynitrile lyase can be produced in a large amount with an unusually high yield.
摘要:
This invention relates to S-hydroxynitrile lyase having excellent tolerance to heat, organic solvents, and the like, which is obtained by modifying at least one amino acid in the helix D3, helix A, and β-sheet 2 domains in the amino acid sequence of wild-type S-hydroxynitrile lyase.
摘要:
A method for efficient production of an S-hydroxynitrile lyase by gene recombination using Escherichia coli is provided. A gene is formed by altering a codon in an S-hydroxyniitrylase gene originating in cassava (Manihot esculenta Crantz) without changing the amino acid sequence thereof till the frequency of codon usage wholly with an amino acid in Escherichia coli reaches a level of not less than 5%. According to the method for the production of an S-hydroxynitrile lyase by the use of the gene, the S-hydroxynitrile lyase can be produced in a large amount with an unusually high yield.