Sorbitol dehydrogenase gene, a novel recombinant DNA, and a process for producing sorbitol dehydrogenase

摘要

A sorbitol dehydrogenase gene encoding (a) a protein having an amino acid sequence shown in SEQ ID NO: 1; or (b) a protein with sorbitol dehydrogenase activity consisting of an amino acid sequence comprising one or more deletions, substitutions or additions in the amino acid sequence of (a). Further, the invention provides a novel recombinant DNA having the sorbitol dehydrogenase gene inserted into a vector DNA, and a transformant or a transductant containing the recombinant DNA. Also, the invention provides a sorbitol dehydrogenase production method comprising the steps of: culturing the transformant or the transductant in a medium; and collecting sorbitol dehydrogenase from the culture. According to the present invention, sorbitol dehydrogenase can be produced efficiently.