purified recombinant mutant E282S alone or in complex with alpha-D-glucopyranosyl fluoride and 4-nitrophenyl-beta-D-glucopyranoside, or with 4-nitrophenyl-gentiobiose, X-ray diffraction structure determination and analysis at 1.59-1.96 A resolution
modeling of structure and molecular dynamics simulation. A set of amino acids substitutions in the surface and loop regions confer increased flexibility to the enzyme, thereby facilitating its structure to cold adaptation. The catalytic activity and structural flexibility at cold environment are attained through a reduced amount of hydrogen bonds and salt bridges