Chapter 23.6, Problem 20P

Interpretation Introduction

Interpretation:

The enzyme catalysed reaction and the names of the required coenzymes should be determined.

Concept introduction:

In an enzyme catalysed reaction that requires coenzymes${\text{B}}_{12}$, a group bonded to one carbon changes places with a hydrogen bonded to an adjacent carbanion.

Biotin (vitamin H) is the coenzyme required by enzymes that catalyse the carboxylation of a carbon adjacent to carbonyl group.

Coenzymes${\text{B}}_{12}$: The coenzyme required by enzymes catalyses certain rearrangement reactions.