Anti-RARS1 antibodies are used in the immunodetection of the protein arginyl-tRNA synthetase 1. In humans, the canonical protein has a reported length of 660 amino acid residues and a mass of 75.4 kDa. Its subcellular localization is in the cytoplasm. It is notably expressed in many tissues, such as the cerebral cortex and hippocampus. It is a member of the Class-I aminoacyl-tRNA synthetase protein family. The RARS1 gene has been associated with the disease, Leukodystrophy. Synonyms for this target antigen include DALRD1, HLD9, RARS, arginine--tRNA ligase, cytoplasmic, arginine tRNA ligase 1, cytoplasmic, and ArgRS. RARS1 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species.