b-glycosidase polypeptide variant, expression vector, host cell, production method of b-glycosidase variant polypeptide, enzymatic composition, method of converting a biomass substrate into fermentable sugar and alcohol production method

摘要

The invention provides variants of the Azospirillum irakense CelA -glucosidase that have improve -glucosidase activity, particularly improved thermoactivity, compared to the wild type enzyme. The invention further provides related polynucleotides, vectors, host cell, and methods for making and using the variants.