NOA1 is a symbol for the gene, Nitric oxide associated 1, in humans. Other names include: Nitric oxide-associated protein 1; nitric oxide synthase, mitochondrial (putative); mitochondrial GTPase 3 homolog (S. cerevisiae); C4orf14; MTG3; hAtNOS1; hNOA1; mAtNOS1. The encoded protein has an amino acid length of 698 and a mass of 78.5 kDa. Other isoforms may exist. NOA1 is a member of the TRAFAC class YlqF/YawG GTPase family, NOA1 subfamily. This gene shares homology with other species, including: Rat.