Polypeptide having lactate dehydrogenase-D, a polynucleotide encoding the polypeptide and process for preparing D-lactic acid

Polypeptide is any of the following (A) to (C): (A) polypeptide having the amino acid sequence shown in SEQ ID NO: 1 or 2; (B) polypeptide having the same amino acid sequence as shown in SEQ ID NO: 1 or 2, exceptoque of 1 to 10 amino acids have been substituted, deleted, inserted and / or added, which polypeptide has activity Dlactatodeshidrogenasa; and (C) a polypeptide having an amino acid sequence having a sequence identity of not less del80% compared to the amino acid sequence shown in SEQ ID NO: 1 or 2, which polypeptide has unaactividad D-lactate dehydrogenase.