Glycine can be synthesized by all except:: (A) Glyoxalate, (B) Leucine, (C) Serine, (D) Threonine
Answer is B. Glycine metabolism The pink boxes (serine, threonine, and glyoxylate)are the one from which glycine can be formed Substrate Enzyme catalysing Threonine Threonine aldolase Serine serine-hydroxy methyl transferase Glyoxylate glycine transaminase Extra information: Glycine can also be synthesized from choline through betaine and sarcosine as intermediates in the pathway.