Claim: NOS1, nitric oxide synthase, is a family of synthases that catalyze the production of nitric oxide from L-arginine, and NO is a chemical messenger with diverse functions through the body.
Evidence: Nitric oxide synthases (EC ) (NOSs) are a family of synthases that catalyze the production of nitric oxide (NO) from L-arginine. NO is a chemical messenger with diverse functions throughout the body.