Anti-stomatin like 1 antibodies are used in the immunodetection of the protein encoded by the STOML1 gene. In humans, the canonical protein has a reported length of 398 amino acid residues and a mass of 43 kDa. Its subcellular localization is in the cytoplasmic vesicles and cell membrane. Alternative splicing is reported to yield 6 different isoforms for this protein. It is found to be widely expressed at low levels. A member of the Band 7/mec-2 protein family, it is believed to play a role in cholesterol transfer to late endosomes. Other names for this target antigen include STORP, hUNC-24, stomatin-like protein 1, EPB72-like 1, EPB72-like protein 1, and SLP-1.