Identification of Exo1-Msh2 interaction motifs in DNA mismatch repair and new Msh2-binding partners
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چکیده
منابع مشابه
An Msh2 point mutation uncouples DNA mismatch repair and apoptosis.
Mutations in the human DNA mismatch repair gene MSH2 are associated with hereditary nonpolyposis colorectal cancer as well as a significant proportion of sporadic colorectal cancer. The inactivation of MSH2 results in the accumulation of somatic mutations in the genome of tumor cells and resistance to the genotoxic effects of a variety of chemotherapeutic agents. Here we show that the DNA repai...
متن کاملContribution of Msh2 and Msh6 subunits to the asymmetric ATPase and DNA mismatch binding activities of Saccharomyces cerevisiae Msh2-Msh6 mismatch repair protein.
Previous analyses of both Thermus aquaticus MutS homodimer and Saccharomyces cerevisiae Msh2-Msh6 heterodimer have revealed that the subunits in these protein complexes bind and hydrolyze ATP asymmetrically, emulating their asymmetric DNA binding properties. In the MutS homodimer, one subunit (S1) binds ATP with high affinity and hydrolyzes it rapidly, while the other subunit (S2) binds ATP wit...
متن کاملEXO1 and MSH6 are high-copy suppressors of conditional mutations in the MSH2 mismatch repair gene of Saccharomyces cerevisiae.
In Saccharomyces cerevisiae, Msh2p, a central component in mismatch repair, forms a heterodimer with Msh3p to repair small insertion/deletion mismatches and with Msh6p to repair base pair mismatches and single-nucleotide insertion/deletion mismatches. In haploids, a msh2Delta mutation is synthetically lethal with pol3-01, a mutation in the Poldelta proofreading exonuclease. Six conditional alle...
متن کاملExpression of DNA mismatch repair proteins MLH1, MSH2, and MSH6 in recurrent glioblastoma.
OBJECTIVES Methylated O6-methylguanin-DNA-methytransferase (MGMT) promoter methylation is associated with survival in patients with glioblastoma. Current evidence suggests that further mismatch repair genes play a pivotal role in the tumor response to treatment. Candidate genes are MLH1, MSH2, and MSH6. Formerly, we found evidence of prognostic impact of MLH1 and MSH6 immunohistochemical expres...
متن کاملImmunohistochemical Loss of the DNA Mismatch Repair Proteins MSH2 and MSH6 in Malignant Fibrous Histiocytomas
PURPOSE Soft tissue sarcomas (STS) account for less than 1% of all malignancies and constitute a heterogeneous tumor entity in which malignant fibrous histiocytomas (MFH) represent one-third and are characterized by a lack of type-specific differentiation. A defective mismatch repair (MMR) system cause the familial cancer syndrome hereditary non-polyposis colorectal cancer (HNPCC), and since oc...
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ژورنال
عنوان ژورنال: Nature Structural & Molecular Biology
سال: 2018
ISSN: 1545-9993,1545-9985
DOI: 10.1038/s41594-018-0092-y