Udp glucose is the abbreviation of uridine diphosphate glucose. A sugar nucleotide. A compound formed by dehydration and condensation of hemiacetal hydroxyl group of glucose and terminal phosphate group of uridine diphosphate. The abbreviation is UDPG. It is synthesized by uridine diphosphate glucose pyrophosphorylase in vivo, and the reaction formula is: glucose-1- phosphate+uridine triphosphate? Uridine diphosphate glucose+pyrophosphate. It exists in plants, animals and microorganisms, and as a donor of glucose groups in the synthesis of oligosaccharides and polysaccharides such as sucrose, starch and glycogen, it can be converted into galactose uridine diphosphate and glucuronidine diphosphate.