Vitamin synthesized from tryptophan -: (A) Thiamine (Vitamin B1), (B) Riboflavin (Vitamin B2), (C) Niacin (Vitamin B3), (D) Pyridoxin (Vitamin B6)
Answer is C. Ans. is 'c' i.e., Niacin (Vitamin B3) o Tryptophan is oxidized to kynurenine, which is then converted to either niacin (nicotinic acid) or acetyl-CoA. In the reaction alanine is also produced.o Deficiency of tryptophan can cause deficiency of niacin (if also deficient in diet). This can leads to Pallegra: dermatitis, diarrhea and dementia.o For every 60 mg of tryptophan, 1 mg. equivalent of niacin can be generated.