The amino acid that can be converted into a vitamin:
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
Glycine
Tryptophan
Phenylalanine
Lysine
Proteins and Amino Acids