Which enzyme-catalyzed reaction is analogous to the phosphopentose isomerase reaction and mechanism?

Question

Quizplus · Accepted Answer

Phosphopentose isomerase catalyzes the interconversion of ribulose 5-phosphate and ribose 5-phosphate in the pentose phosphate pathway. Similarly, phosphoglucoisomerase catalyzes the interconversion of glucose 6-phosphate and fructose 6-phosphate in the glycolytic pathway, making it analogous to the phosphopentose isomerase reaction and mechanism. The other choices, UDP-glucose epimerase and phosphopentose epimerase, catalyze different reactions involving sugar epimerization, while phosphoglycerate isomerase catalyzes the isomerization of 3-phosphoglycerate to 2-phosphoglycerate in glycolysis, which is not analogous to the phosphopentose isomerase reaction.

Which Enzyme-Catalyzed Reaction Is Analogous to the Phosphopentose Isomerase Reaction