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Glycogenin is an enzyme involved in converting glucose to glycogen. It acts as a primer, by polymerizing the first few glucose molecules, after which other enzymes take over. It is a homodimer of 37-kDa subunits and is classified as a glycosyltransferase. It catalyzes the chemical reaction: :UDP-alpha-D-glucose + glycogenin 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. == Nomenclature == 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. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Glycogenin」の詳細全文を読む スポンサード リンク
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