Component of the post-replicative DNA mismatch repair system (MMR). Forms two different heterodimers: MutS alpha (MSH2-MSH6 heterodimer) and MutS beta (MSH2-MSH3 heterodimer) which binds to DNA mismatches thereby initiating DNA repair. When bound, heterodimers bend the DNA helix and shields approximately 20 base pairs. MutS alpha recognizes single base mismatches and dinucleotide insertion-deletion loops (IDL) in the DNA. MutS beta recognizes larger insertion-deletion loops up to 13 nucleotides long. After mismatch binding, MutS alpha or beta forms a ternary complex with the MutL alpha heterodimer, which is thought to be responsible for directing the downstream MMR events, including strand discrimination, excision, and resynthesis. Recruits DNA helicase MCM9 to chromatin which unwinds the mismatch containg DNA strand. ATP binding and hydrolysis play a pivotal role in mismatch repair functions. The ATPase activity associated with MutS alpha regulates binding similar to a molecular switch: mismatched DNA provokes ADP-->ATP exchange, resulting in a discernible conformational transition that converts MutS alpha into a sliding clamp capable of hydrolysis-independent diffusion along the DNA backbone. This transition is crucial for mismatch repair. MutS alpha may also play a role in DNA homologous recombination repair. In melanocytes may modulate both UV-B-induced cell cycle regulation and apoptosis.
Synthetic peptide within N-terminal residues of Human MSH2.
Store at +4℃ after thawing. Aliquot store at -20℃. Avoid repeated freeze / thaw cycles.
1*TBS (pH7.4), 0.5%BSA, 50%Glycerol. Preservative: 0.05% Sodium Azide.
SwissProt: P43246 Human
SwissProt: P54275 Rat
COCA 1 antibody
DNA mismatch repair protein Msh2 antibody
FCC 1 antibody
HNPCC 1 antibody
MSH 2 antibody
MutS homolog 2 antibody
MutS homolog 2 colon cancer nonpolyposis type 1 antibody
MutS protein homolog 2 antibody
Fig1: Western blot analysis of MSH2 on K562 cells lysates using anti-MSH2 antibody.
Lane 1: Anti-MSH2 antibody, 1:500.
Lane 2: Anti-MSH2 antibody, 1:5,000.
Fig2: Immunohistochemical analysis of paraffin-embedded human breast cancer tissue using anti-MSH2 antibody. Counter stained with hematoxylin. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6) for 20 mins.
Fig3: Immunohistochemical analysis of paraffin-embedded human kidney tissue using anti-MSH2 antibody. Counter stained with hematoxylin. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6) for 20 mins.
Fig4: Immunohistochemical analysis of paraffin-embedded rat brain tissue using anti-MSH2 antibody. Counter stained with hematoxylin. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6) for 20 mins.
1. Kansikas M. et al. Verification of the three-step model in assessing the pathogenicity of mismatch repair gene variants. Hum. Mutat. 32:107-115(2011).
2. Traver S. et al. MCM9 Is Required for Mammalian DNA Mismatch Repair. Mol. Cell 59:831-839(2015).
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