Nitric Oxide

Nitric Oxide NITRIC OXIDE Vasodilator. Formed by action of nitric oxide synthase on Arginine.  Steps in synthesis: NO formed by cytosolic enzyme NO synthase action on endothelial & neuronal cells. Substrate: Arginine, O2, NADPH Coenzyme: NADPH, FAD, FMN, Heme, tetrahydrobiopterin Product: Citrulline, NO. Present in low concentration in cigarette smokers BIOLOGICAL ROLE: In biological processes like,  Neurotransmission. Immune […]