Which statement is TRUE for glycogen phosphorylase b?
A) It catalyzes a phosphorylytic cleavage of $\alpha$(1$\rightarrow$6) glycosidic bonds.
B) It catalyzes a hydrolytic cleavage of $\alpha$(1$\rightarrow$4) glycosidic bonds.
C) It is regulated both allosterically and via covalent modification.
D) It uses UDP-glucose as a substrate.
E) It is an important blood glucose sensor in myocytes.

Question

Quizplus · Accepted Answer

Glycogen phosphorylase b is regulated both allosterically and via covalent modification. Option A and B are incorrect as glycogen phosphorylase b catalyzes a phosphorylytic cleavage of F1F1F1S1F1F1F10(1F1F1F1S1F1F1F106) glycosidic bonds. Option D is also incorrect as glycogen phosphorylase b uses inorganic phosphate as a substrate. Option E is incorrect as liver cells, not myocytes, use glycogen phosphorylase b as a blood glucose sensor.

Which Statement Is TRUE for Glycogen Phosphorylase B? A) It α\alphaα

Which Statement Is TRUE for Glycogen Phosphorylase B?
A) It $\alpha$