Anti-NALCN channel auxiliary factor 1 antibodies are used for the immunodetection of the protein encoded by the NALF1 gene. 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. A member of the NALF protein family, it 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. Other names for this target antigen include family with sequence similarity 155 member A and transmembrane protein FAM155A. Gene orthologs have been identified in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species.