Question

UDP-glucose pyrophosphorylase works by this mechanism: Group of answer choices It adds a phosphate group to glucose from UTP, leaving behind UDP. It adds a UMP molecule to glucose-1-phosphate by splitting out pyrophosphate. It adds a pyrophosphate group to glucose, using UTP. It adds a UDP molecule to glucose by splitting out phosphate. None of these

Answer 1

Answer:

The correct answer is it adds a UMP molecule to glucose-1-phosphate by splitting out pyrophosphate.

Explanation:

UDP glucose pyrophosphorylase enzyme also known as UTP-glucose-1-phsphate uridylyltransferase.

     This enzyme plays an important role during synthesis of glycogen also known as glycogenesis.

    During the reaction the enzyme UDP glucose pyrophosphorylase transfer uridine monophosphate to glucose-1-phosphate resulting in the formation of UDP glucose along with the release of pyrophosphate moiety.

      Glucose-1-phosphate+UTP⇆UDP-glucose+ppi