Which is NOT an intermediate in the biosynthesis of cysteine from methionine?

Question

Quizplus · Accepted Answer

Glycine is not involved in the biosynthesis of cysteine from methionine. The intermediate steps in this process include the formation of S-adenosylmethionine (SAM) from methionine, which then reacts with ATP to form S-adenosylhomocysteine (SAH). SAH is then converted to homocysteine, which reacts with serine to form cystathionine. Cystathionine is then cleaved to form cysteine.

Which Is NOT an Intermediate in the Biosynthesis of Cysteine