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Publication Detail
Identification of the 38-kDa subunit of rabbit skeletal muscle glycogen synthase as glycogenin.
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Journal Article
  • Authors:
    Pitcher J, Smythe C, Campbell DG, Cohen P
  • Publication date:
  • Pagination:
    497, 502
  • Journal:
    Eur J Biochem
  • Volume:
  • Issue:
  • Status:
  • Country:
  • Print ISSN:
  • Language:
  • Keywords:
    Amino Acids, Animals, Glucosyltransferases, Glycogen Synthase, Glycoproteins, Macromolecular Substances, Molecular Weight, Muscles, Peptide Mapping, Rabbits
Glycogen synthase from rabbit skeletal muscle has been shown to be a complex of two types of subunit which have apparent molecular masses of 86 kDa and 38 kDa and are present in a 1:1 molar ratio. The 38-kDa component was separated from the 86-kDa catalytic subunit by gel filtration in the presence of 2 M LiBr, and a number of chymotryptic peptides were sequenced. This demonstrated that the 38-kDa subunit was glycogenin, the protein that is bound covalently to glycogen and believed to be the 'primer' involved in the initiation of de novo glycogen synthesis.
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