Anti-protein tyrosine phosphatase mitochondrial 1 antibodies are used for the immunodetection of the protein encoded by the PTPMT1 gene. In humans, the canonical protein has a reported length of 201 amino acid residues and a mass of 22.8 kDa. Its subcellular localization is in the mitochondria. Alternative splicing is reported to yield 3 different isoforms for this protein. A member of the Protein-tyrosine phosphatase protein family, it is reported to be a lipid phosphatase, which dephosphorylates phosphatidylglycerophosphate (PGP) to phosphatidylglycerol (PG) (By similarity). Other names for this target antigen include NB4 apoptosis/differentiation related protein, PTEN-like phosphatase, phosphoinositide lipid phosphatase, and phosphatidylglycerophosphatase and protein-tyrosine phosphatase 1. Gene orthologs have been identified in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species.