Prokaryotic UGPase catalyses the synthesis of UDP-glucose.
Prokaryotic UDP-Glucose Pyrophosphorylase (UGPase) catalyzes a reversible production of UDP-Glucose and pyrophosphate (PPi) from glucose-1-phosphate and UTP. UDP-glucose plays pivotal roles in galactose utilization, in glycogen synthesis, and in the synthesis of the carbohydrate moieties of glycolipids , glycoproteins , and proteoglycans. UGPase is found in both prokaryotes and eukaryotes, although prokaryotic and eukaryotic forms of UGPase catalyze the same reaction, they share low sequence similarity.