What is the only reaction of mammalian amino acid metabolism that is dependent upon vitamin B₁₂? A)conversion of phenylalanine to tyrosine B)conversion of homocysteine to methionine C)isomerization of methylmalonyl-CoA to succinyl-CoA D)methane synthesis E)none of the above

Question

Quizplus · Accepted Answer

The only reaction of mammalian amino acid metabolism that is dependent upon vitamin B12 is the conversion of homocysteine to methionine. Vitamin B12 is necessary for the function of the enzyme methionine synthase, which catalyzes this reaction.

What Is the Only Reaction of Mammalian Amino Acid Metabolism