Patent ID: 7402413

Claim:
A transformant resulting from transformation of a host microorganism with a DNA, the DNA having the nucleotide sequence of SEQ ID NO: 3 and encoding a protein enabling or enhancing the activity of a protein encoded by the Schizosaccharomyces pombe DPS1 gene amplifiable with PCR primers of SEQ ID NOS: 13 and 14, the human DPS1 gene amplifiable with PCR primers of SEQ ID NOS: 15 and 16 and/or the mouse DPS1 gene amplifiable with PCR primers of SEQ ID NOS: 17 and 18 in the host microorganism; or the DNA having the nucleotide sequence isolated from the nucleotide sequence of SEQ ID NO: 3 by deletion, addition, insertion and/or substitution of one nucleotide thereof and encoding a protein enabling or enhancing the activity of a protein encoded by the Schizosaccharomyces pombe DPS1 gene amplifiable with PCR primers of SEQ ID NOS: 13 and 14, the human DPS1 gene amplifiable with PCR primers of SEQ ID NOS: 15 and 16 and/or the mouse DPS1 gene amplifiable with PCR primers of SEQ ID NOS: 17 and 18 in the host microorganism, wherein the transformant is transformed with the Schizosaccharomyces pombe DPS1 gene amplifiable with PCR primers of SEQ ID NOS: 13 and 14, the human DPS1 gene amplifiable with PCR primers of SEQ ID NOS: 15 and 16 and/or the mouse DPS1 gene amplifiable with PCR primers of SEQ ID NOS: 17 and 18 further introduced therein.