Patent ID: 7371549

Claim:
An isolated polynucleotide encoding a protein selected from the group consisting of the following (a) to (d): (a) a protein comprising the amino acid sequence of SEQ ID NO:2; (b) a protein that is at least 95% homologous to the amino acid sequence of SEQ ID NO:2 and has 4R-aldolase activity; (c) a protein comprising an amino acid sequence containing substitution, deletion, insertion or addition of 1 to 15 amino acid residues in the amino acid sequence of SEQ ID NO:2, and has aldolase activity; and (d) a protein that is at least 85% homologous to the amino acid sequence in SEQ ID NO:2 and has 4R-aldolase activity and said protein has the core sequence of SEQ ID NO: 23.