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Email: info@nsjbio.com
- Tel: 858.663.9055
- Email: info@nsjbio.com
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PMS2 Antibody / DNA Mismatch Repair Protein Antibody recognizes PMS2, also known as Postmeiotic Segregation Increased 2, an essential component of the DNA mismatch repair (MMR) system that preserves genomic stability by correcting errors introduced during DNA replication. PMS2 forms the MutL alpha heterodimer with MLH1, creating the principal endonuclease complex responsible for initiating repair of base-base mismatches and insertion-deletion loops. This highly conserved repair pathway prevents the accumulation of mutations, suppresses microsatellite instability, and protects cells from malignant transformation. Because of its central role in maintaining genome integrity, PMS2 has become one of the most widely studied mismatch repair proteins in cancer biology and molecular pathology.
PMS2 functions downstream of the MutS recognition complexes, which detect mismatched DNA generated during replication. Following recruitment by MLH1, PMS2 provides the endonuclease activity required to introduce strand-specific incisions that permit removal of the error-containing DNA segment and subsequent repair synthesis. Beyond mismatch repair, PMS2 contributes to DNA damage signaling, cell cycle checkpoint regulation, apoptosis, and cellular responses to genotoxic stress. Loss of PMS2 function results in increased mutation rates and chromosomal instability, underscoring its importance in preserving genomic fidelity across proliferating tissues.
Inherited pathogenic variants in the PMS2 gene are a major cause of Lynch syndrome, also known as hereditary nonpolyposis colorectal cancer, predisposing affected individuals to colorectal, endometrial, ovarian, gastric, pancreatic, urinary tract, and other malignancies. Somatic loss of PMS2 expression is likewise associated with mismatch repair-deficient tumors and microsatellite instability, making PMS2 immunohistochemistry a routine component of diagnostic pathology for colorectal and endometrial cancers. Evaluation of PMS2 expression is frequently performed alongside MLH1, MSH2, and MSH6 to identify mismatch repair deficiency, guide genetic testing, and support therapeutic decision-making, including selection of patients who may benefit from immune checkpoint inhibitor therapy.
Clone PMS2/4373R is a recombinant rabbit monoclonal antibody developed for highly specific detection of PMS2 in research applications. Protein microarray validation against more than 19,000 full-length human proteins demonstrated exceptional target specificity, with PMS2 identified as the highest-ranking target by both Z-score and S-score analysis. The recombinant format further provides excellent lot-to-lot consistency, making clone PMS2/4373R well suited for studies of DNA mismatch repair, genomic stability, hereditary cancer syndromes, and tumor biology. A PMS2 Antibody is a valuable research tool for investigating mismatch repair mechanisms, Lynch syndrome, microsatellite instability, and DNA damage responses.
Explore additional antibodies for hereditary cancer research, genomic stability, and tumor biology on our Cancer Marker Antibodies page.
Optimal dilution of the PMS2 Antibody / DNA Mismatch Repair Protein Antibody should be determined by the researcher.
A portion of amino acids 1-100 from the human protein was used as the immunogen for the recombinant PMS2 antibody.
Store the recombinant PMS2 antibody at 2-8oC (with azide) or aliquot and store at -20oC or colder (without azide).
PMS2 antibody, DNA Mismatch Repair Protein antibody, Postmeiotic Segregation Increased 2 antibody, PMS2 Homolog antibody
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