Protein having alpha -glucosidase activity, DNA having genetic information thereof, and production of alpha -glucosidase

摘要

A protein having an alpha -glucosidase activity, wherein its N-terminal amino acid sequence is the sequence depicted in the Sequence Listing of the present invention at Sequence No. 1; a DNA having the genetic information of the protein having an alpha -glucosidase activity; a recombinant vector containing said DNA; a transformant transformed with said vector; and production of alpha -glucosidase comprising culture of said transformant in a medium so as to grow alpha -glucosidase, and harvesting said alpha -glucosidase. According to the present invention, alpha -glucosidase without contamination of amylase can be easily produced in high yields and in large amounts by genetic engineering.