27035237038ENSG00000007952ENSMUSG00000031257Q9Y5S8Q8CIZ9NM_013955NM_001271815NM_007052NM_013954NM_172203NP_001258744NP_008983NP_039249NP_757340NADPH oxidase 1 is an enzyme that in humans is encoded by the NOX1 gene. NADPH oxidase 1 is an enzyme that in humans is encoded by the NOX1 gene. NOX1 is a homolog of the catalytic subunit of the superoxide-generating NADPH oxidase of phagocytes, gp91phox. Two transcript variants encoding different isoforms have been found for this gene.