All the following coenzymes are derivative of B-complex vitamins, Except: (A) S-adenosylmethionine, (B) NAD+, (C) Pyridoxal phosphate, (D) Coenzyme A
Answer is A. .NAD+ (Niacin)Pyridoxal phosphate (Pyridoxine)Coenzyme A (pantothenate )Methionine reacts with ATP forming S-adenosylmethionine, "active methionine"Harper 30th edition pg: 308