NOS1, nitric oxide synthase, is a family of synthases that catalyze the production of nitric oxide from L-arginine, and NO (a colorless gas) is a chemical messenger with diverse functions through the body.
Nitric oxide synthase 1 (neuronal), also known as NOS1, is an enzyme that in humans is encoded by the NOS1 gene. 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. Nitric oxide (nitrogen oxide or nitrogen monoxide) is a colorless gas with the formula NO. This article is about the molecule. 
