Which vitamin can be synthesized from tryptophan:: (A) Niacin, (B) Riboflavin, (C) Cobalamin, (D) Folic acid
Answer is A. Ans. (a) NiacinRef: Harpers Biochemistry, 30th ed. pg. 557* Niacin is synthesized from tryptophan via kynurenine and quinolinic acids as key biosynthetic intermediates.* Refer to above explanation for more details.