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Acc Chem Res. 2000 Jan;33(1):11-8.

Glycosidase mechanisms: anatomy of a finely tuned catalyst.

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1
Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada.

Abstract

In order to accelerate the hydrolysis of glycosidic bonds by factors approaching 10(17)-fold, glycosidases have evolved finely tuned active sites optimally configured for transition-state stabilization. Structural analyses of various enzyme complexes representing stable intermediates along the reaction coordinate, in conjunction with detailed mechanistic studies on wild-type and mutant enzymes, have delineated the contributions of nucleophilic and general acid/base catalysis, as well as the roles of noncovalent interactions, to these impressive rate enhancements.

PMID:
10639071
[Indexed for MEDLINE]

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