Glycogenesis: Difference between revisions
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<scene name='94/942621/Cv/3'>Glucose-1-phosphate</scene> is converted into <scene name='94/942621/Cv/6'>UDP-glucose</scene> by the action of the enzyme UDP-glucose pyrophosphorylase. Pyrophosphate is formed, which is later hydrolysed by pyrophosphatase into two phosphate molecules. | <scene name='94/942621/Cv/3'>Glucose-1-phosphate</scene> is converted into <scene name='94/942621/Cv/6'>UDP-glucose</scene> by the action of the enzyme UDP-glucose pyrophosphorylase. Pyrophosphate is formed, which is later hydrolysed by pyrophosphatase into two phosphate molecules. | ||
'''Step 4''' | |||
The enzyme glycogenin is needed to create initial short glycogen chains, which are then lengthened and branched by the other enzymes of glycogenesis. Glycogenin, a homodimer, has a tyrosine residue on each subunit that serves as the anchor for the reducing end of glycogen. Initially, about seven UDP-glucose molecules are added to each tyrosine residue by glycogenin, forming α(1→4) bonds. | |||
</StructureSection> | </StructureSection> | ||
== References == | == References == | ||
<references/> | <references/> | ||
