Abstract

The enzyme glycogen synthase (UDP glocose:glycogen 4-[alpha]-D-glucosyltransferase, EC 2.4.1.11) catalyzes the formation of glycogen from uridine diphosphate glucose (UPDG). Impaired activation of muscle glycogen synthase by insulin has been noted in patients with genetic risk of developing non-insulin-dependent diabets mellitus (NIDDM) and this may represent an early defect in the pathogenesis of this disorder. As such, glycogen synthase represents a candidate gene for contributing to genetic susceptibility. As a first step in studying the role of glycogen synthase in the genetics of NIDDM, we have isolated a cosmid encoding the human glycogen synthase gene (gene symbol GYS) and determined its chromosomal localization by fluorescence in situ hybridization. 4 refs., 1 fig.

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