MTH1
MLH1(MutL homolog 1) protein is one component of a system of seven DNA mismatch repair (MMR) proteins that work coordinately in sequential steps to initiate repair of DNA mismatches in humans. The seven MMR proteins in humans are MLH1, MLH3, MSH2, MSH3, MSH6, PMS1 and PMS2. In addition, there are Exo1-dependent and Exo1-independent MMR subpathways.