What is the primary enzyme responsible for converting glucose-6-phosphate into glucose-1-phosphate in the glycogen synthesis pathway?

A Phosphoglucomutase ✓
B Glucose-6-phosphatase
C Hexokinase
D Glycogen synthase

Explanation

Phosphoglucomutase is the enzyme that catalyzes the conversion of glucose-6-phosphate to glucose-1-phosphate, which is then used to synthesize glycogen.

Mnemonic

Phospho-glucose-mutase → 'mutates' glucose-6-phosphate to glucose-1-phosphate

Source

Lehninger Principles of Biochemistry
Carbohydrate Metabolism Biochemistry Glycogen Synthesis Medium MEDICAL Confidence: high