The amino acid that can be converted into a vitamin:: (A) Glycine, (B) Tryptophan, (C) Phenylalanine, (D) Lysine
Answer is B. Ans. B. TryptophanTryptophan can be converted to Niacin.The rate limiting enzyme in Niacin synthesis is Quinolinate Phosphoribosyl Transferase (QPRTase)Specialised products of TryptophanSerotonin (5 Hydroxytryptamine)MelatoninNiacin