Glycogenin glucosyltransferase

In enzymology, a glycogenin glucosyltransferase is an enzyme that catalyzes the chemical reaction


 * UDP-alpha-D-glucose + glycogenin $$\rightleftharpoons$$ UDP + alpha-D-glucosylglycogenin

Thus, the two substrates of this enzyme are UDP-alpha-D-glucose and glycogenin, whereas its two products are UDP and alpha-D-glucosylglycogenin.

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-alpha-D-glucose:glycogenin alpha-D-glucosyltransferase. Other names in common use include glycogenin, priming glucosyltransferase, and UDP-glucose:glycogenin glucosyltransferase.

Structural studies
As of late 2007, 9 structures have been solved for this class of enzymes, with PDB accession codes, , , , , , , , and.