All of the following are true statements regarding the 3-Phosphoglycerate (3-PG) family EXCEPT:
A) 3-PG is diverted from glycolysis by phosphoglycerate mutase.
B) Glycine can be derived from serine.
C) Serine, glycine and cysteine are all nonessential amino acids.
D) Production of glycine also produces N5, N10-methylene-THF which is important in the biosynthesis of purines.
E) Serine production is regulated by a direct feedback mechanism.
Correct Answer:
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