Mutant nitrile hydratase, nucleic acid coding said mutant nitrile hydratase, expression vector and transformant including said nucleic acid, production method for said mutant nitrile hydratase, and production method for amide compound

摘要

A mutant nitrile hydratase that is derived from Pseudonocardia thermophila and has an α subunit and a β subunit, wherein a specific amino acid residue has been substituted for the amino acid residue in at least one position selected from the group consisting of the 40th and 43rd residues from the N terminal of the α subunit, and the 205th, 206th, and 215th residues from the N terminal of the β subunit.