Anti-MLH2 antibodies enable researchers to detect and measure the MLH2 antigen in biological samples. This target is a reported synonym of the PMS1 gene, which encodes PMS1 homolog 1, mismatch repair system component. This protein is known to function in the response to xenobiotic compounds, among other biological roles. The human version of MLH2 has a canonical amino acid length of 932 residues and a protein mass of 105.8 kilodaltons, although 4 isoforms have been identified. It is reported to be localized in the nucleus of cells. MLH2 is a member of the DNA mismatch repair MutL/HexB protein family.