Anti-NALF1 antibodies are used in the immunodetection of the protein NALCN channel auxiliary factor 1. In humans, the canonical protein has a reported length of 458 amino acid residues and a mass of 51.5 kDa. Its subcellular localization is in the cell membrane. It is notably expressed in the cerebellum and cerebral cortex. A member of the NALF protein family, NALF1 is reported to be an auxillary component of the NALCN sodium channel complex, a channel that regulates the resting membrane potential and controls neuronal excitability. Post-translational modifications have been described, including glycosylation. Synonyms for this target antigen include family with sequence similarity 155 member A and transmembrane protein FAM155A. NALF1 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species.