Which enzyme is responsible for converting glucose-6-phosphate to fructose-6-phosphate in the pentose phosphate pathway?

A Phosphoglucose isomerase ✓
B Glucose-6-phosphate dehydrogenase
C 6-Phosphogluconate dehydrogenase
D Transaldolase

Explanation

Phosphoglucose isomerase is the enzyme responsible for converting glucose-6-phosphate to fructose-6-phosphate in the pentose phosphate pathway.

Source

Harper's Illustrated Biochemistry
Carbohydrate Metabolism Biochemistry Pentose Phosphate Pathway Hard MEDICAL Confidence: high