Anti-solute carrier family 66 member 1 antibodies are used for the immunodetection of the protein encoded by the SLC66A1 gene. In humans, the canonical protein has a reported length of 291 amino acid residues and a mass of 31.9 kDa. Its subcellular localization is in the lysosomes. Alternative splicing is reported to yield 3 different isoforms for this protein. A member of the Laat-1 protein family, it is known to be involved with transmembrane transport. Post-translational modifications have been described, including glycosylation. Other names for this target antigen include LAAT1, PQLC2, lysosomal amino acid transporter 1 homolog, PQ loop repeat containing 2, PQ-loop repeat-containing protein 2, and LAAT-1. Gene orthologs have been identified in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species.