Isolated xylanase gene with mutations and site-specific mutagenesis method thereof

摘要

An isolated xylanase gene with mutations includes a fifty-eighth amino acid or a thirty-eighth amino acid generated from transforming asparagine to aspartic acid so as to form the isolated xylanase gene. A site-specific mutagenesis method includes: mutating the forty-first amino acid or the thirty-eighth amino acid of the xylanase gene by transforming asparagine to aspartic acid so as to form the isolated xylanase gene.