MSH3, also known as DNA mismatch repair protein Msh3, Protein repair-1, REP-1, or Protein repair-3, REP-3, and encoded by the gene MSH3/REP-3, is an important component of the post-replicative DNA mismatch repair system. MSH3 heterodimerizes with MSH2 to form a complex named MutS beta which binds DNA mismatches and initiates DNA repair. MSH3/MSH2 complex (MutS beta) also complexes with another protein complex called MutL alpha which is also necessary for further steps in DNA repair. MSH3 is also frequently mutated in many cancers resulting in a mismatch repair deficiency and this can contribute to sensitivity to cytotoxic drugs. Interestingly too, because MSH3 is involved in DNA repair, it appears to it can mediate sensitivity to various repeat-associated diseases such as Huntington's disease.
Synonyms: DNA mismatch repair protein Msh3, Protein repair-1, REP-1, Protein repair-3, REP-3
Application: Western Blotting Analysis: 0.5 µg/mL of this antibody detected MSH3 in 10 µg of mouse testis tissue lysate.Immunocytochemistry Analysis: A representative lot detected MSH3 in C2C12 cells (Prof. Glenn Morris, Wolfson Centre for Inherited Neuromuscular Disease.; Holt, I., et al. (2011). J Cell Biochem. 112(6):1612-1621.).