Structure of a bacterial glycoside hydrolase family 63 enzyme in complex with its glycosynthase product, and insights into the substrate specificity.

Abstract excerpt

Proteins belonging to glycoside hydrolase family 63 (GH63) are found in bacteria, archaea and eukaryotes. Although the eukaryotic GH63 proteins have been identified as processing α-glucosidase I, the substrate specificities of the bacterial and archaeal GH63 proteins are not clear. Here, we converted a bacterial GH63 enzyme, Escherichia coli YgjK, to a glycosynthase to probe its substrate specificity. Two mutants...

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