The function of Ensembl gene identifier ENSG00000074771 (NOX3, NADPH oxidase 3) is as follows. NADPH oxidase that catalyzes the generation of superoxide from molecular oxygen utilizing NADPH as an electron donor, upon formation of a complex with CYBA/p22phox (PubMed:15181005, PubMed:15824103). Plays a role in the biogenesis of otoconia/otolith, which are crystalline structures of the inner ear involved in the perception of gravity (By similarity). {ECO:0000250|UniProtKB:Q672J9, ECO:0000269|PubMed:15181005, ECO:0000269|PubMed:15824103}.