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How well do you know Glycogen Synthase and its role in glycogen synthesis?
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How well do you know Glycogen Synthase and its role in glycogen synthesis?

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Questions and Answers

Which enzyme catalyzes the glycosylation of its own tyrosine residue to start glycogen synthesis?

  • Glycogenin (correct)
  • UDP-glucose
  • Tyrosine kinase
  • Glycogen synthase

    • What type of bond does glycogen synthase form between glucoses?

  • α 1-4 glycosidic bonds (correct)
  • β 1-6 glycosidic bonds
  • α 1-6 glycosidic bonds
  • β 1-4 glycosidic bonds

    • What is the role of UDP-glucose in glycogen synthesis?

  • It donates glucose to the 4' end of a glycogen chain (correct)
  • It catalyzes its own glycosylation
  • It forms α 1-4 glycosidic bonds between glucoses
  • It adds glucose to a tyrosine residue in glycogenin

    • Can glycogen synthase start the synthesis of a new glycogen molecule?

    <p>No</p> Signup and view all the answers

    What is the phosphate transfer potential of UDP-glucose?

    <p>High</p> Signup and view all the answers

    What is the name of the protein that starts glycogen synthesis by adding a glucose molecule to its tyrosine residue?

    <p>Glycogenin</p> Signup and view all the answers

    Which type of glycosidic bond does glycogenin form between glucoses?

    <p>α 1-4 glycosidic bonds</p> Signup and view all the answers

    What is the property of glycogenin that makes it an enzyme?

    <p>It catalyzes its own glycosylation</p> Signup and view all the answers

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