Description_x000D_ General description_x000D_ Uridine diphosphate glucose (UDP-glucose) is a glycogen precursor. The transfer of glucose from UDP-glucose to growing glycogen chain is catalyzed by the enzyme glycogen synthase. The enzyme uridine diphosphate galactose-4-epimerase catalyzes the formation of UDP-glucose from UDP-galactose._x000D_ Application_x000D_ Uridine 5′-diphosphoglucose disodium salt hydrate from Saccharomyces cerevisiae has been used as a substrate_x000D_ • for the PpIRX10 enzyme activity from Arabidopsis thaliana_x000D_ • in radiometric assay of glycosyltransferases (GTs)_x000D_ • in uridine diphosphate glucose (UDP-Glc) 4-epimerase assay in Arabidopsis thaliana samples_x000D_ Packaging_x000D_ 1, 5 g in poly bottle_x000D_ 25, 100, 500 mg in poly bottle_x000D_ 10 mg in glass bottle_x000D_ Biochem/physiol Actions_x000D_ Uridine diphosphate glucose (UDP-glucose) is an essential mediator of the cellular metabolic pathways. In yeast, the high levels of trehalose and glycogen favor increased levels of UDP-glucose.