| abstract |
Provided is a novel β-glucosidase exhibiting high activity in the presence of biomass and having high thermal stability compared to conventional enzymes. The β-glucosidase includes substitutions and/or deletions of amino acids, i.e., at least three amino acids selected from the group consisting of Glu39, Asp169, Arg170, Arg220, Tyr227, and Glu330, of the parent β-glucosidase with other amino acids and shows a cellobiose decomposition activity. |