Which of the following aminoacid in a protein is involved in urea cycle and is required for synthesis of NO?: (A) Arginine, (B) Histidine, (C) Tryptophan, (D) Lysine
Answer is A. Ans. A. ArginineFallowing are required for Nitric Oxide (NO) synthesis: Arginine, NO synthase, Ca++_and NADPH.Urea cycle: