Which of the following statements concerning the branching p

Which of the following statements concerning the branching process in glycogenesis is FALSE? The branching enzyme that catalyzes this reaction is so very exacting that

a) the block of residues which it transfers must include the nonreducing terminus

b) the block of residues which it transfers must come from a chain at least eleven residues long.

c) the new branch point must be at least four residues away from a preexisting one.

d) none of the above

e) all of the above

Solution

Answer: d) none of the above

Reason:

Branching of glycogen is mediated by the enzyme glycogen synthetase, and this enzyme is going to promote the synthesis of “glucosyl residues” that are specifically linked via -1,4 linkage and another branch is formed by -1,6 link. This block of residues, which it transfers must include the nonreducing terminus with 7 residues, in which the block of residues which it transfers must come from a chain at least 11 residues long with new branch point must be at least four residues away from a preexisting one.