| abstract |
A hyperthermostable endoglucanase, having an endoglucanase catalytic domain including: (A) a polypeptide including the amino acid sequence represented by SEQ ID NO: 1 or 2, (B) a polypeptide including an amino acid sequence in which at least one amino acid has been deleted, substituted, or added in the amino acid sequence represented by SEQ ID NO: 1 or 2, and having hydrolysis activity against a substrate of carboxymethyl cellulose at least under conditions of 90° C. and pH 5.5, or (C) a polypeptide including an amino acid sequence having 80% or greater sequence identity with the amino acid sequence represented by SEQ ID NO: 1 or 2, and having hydrolysis activity against a substrate of carboxymethyl cellulose at least under conditions of 90° C. and pH 5.5. |