Anti-SMIM43 antibodies are used in the immunodetection of the protein small integral membrane protein 43. In humans, the canonical protein has a reported length of 63 amino acid residues and a mass of 7.3 kDa. Its subcellular localization is in the membrane. Synonyms for this target antigen include protein TMEM155 and transmembrane protein 155. SMIM43 gene orthologs have been reported in the mouse, rat and chimpanzee species.