Anti-mitochondrial transcription rescue factor 1 antibodies are used for the immunodetection of the protein encoded by the MTRES1 gene. In humans, the canonical protein has a reported length of 240 amino acid residues and a mass of 27.9 kDa. Its subcellular localization is in the mitochondria. Other names for this target antigen include HSPC230, PRED31, uncharacterized protein C6orf203, and C6orf203. Gene orthologs have been identified in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species.