| abstract |
Provided is a method for economically and efficiently producing an optically active amino compound, which is useful as an intermediate for drugs, pesticides and so on, from a ketone compound. A novel polypeptide having a transaminase activity, said polypeptide showing a higher activity for glutamic acid than for L-alanine as an amino donor and forming (S)1-benzyl-3-pyrrolidinone at a high optical purity of 93% or greater, a gene encoding the polypeptide, and a transformant highly expressing the gene. |