Divergent upstream protein, DNA mismatch repair protein, DNA mismatch repair protein Msh 3, DNA mismatch repair protein Msh3, DUC 1, DUC1, DUG, DUP, hMSH3, Mismatch repair protein 1, MRP 1, MRP1, MSH 3, MSH-3, MSH3_HUMAN, MutS homolog 3.
Component of the post-replicative DNA mismatch repair system (MMR). Heterodimerizes with MSH2 to form MutS beta which binds to DNA mismatches thereby initiating DNA repair. When bound, the MutS beta heterodimer bends the DNA helix and shields approximate