The function of NOX1 (NADPH oxidase 1, Ensembl gene identifier ENSG00000007952) is as follows. NADPH oxidase that catalyzes the generation of superoxide from molecular oxygen utilizing NADPH as an electron donor. {ECO:0000269|PubMed:14617635, ECO:0000269|PubMed:16329988, ECO:0000269|PubMed:16636067, ECO:0000269|PubMed:19755710}. [Isoform NOH-1L]: NADPH oxidase that catalyzes the generation of superoxide from molecular oxygen utilizing NADPH as an electron donor. .