Results 261 to 270 of about 2,130,493 (297)
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DNA mismatch repair: MutS structures bound to mismatches.
Current Opinion in Structural Biology, 2001When DNA mismatch repair fails, the result is a mutator phenotype, which can lead to cancer in humans. Functional repair is dependent on the recognition of mismatches by a dimeric MutS protein, a homodimer in bacteria but a heterodimer in humans. Recent crystal structures of Thermus aquaticus and Escherichia coli MutS have revealed the structural ...
exaly +3 more sources
1998
Studies of human mismatch repair were stimulated by the finding that mutations in genes encoding mismatch repair factors underlie the inherited predisposition to colorectal and other cancers in the hereditary non-polyposis colorectal carcinoma (HNPCC) syndrome and occur quite commonly in apparently sporadic tumours.
M. O’Driscoll, O. Humbert, P. Karran
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Studies of human mismatch repair were stimulated by the finding that mutations in genes encoding mismatch repair factors underlie the inherited predisposition to colorectal and other cancers in the hereditary non-polyposis colorectal carcinoma (HNPCC) syndrome and occur quite commonly in apparently sporadic tumours.
M. O’Driscoll, O. Humbert, P. Karran
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Phosphorylation meets DNA mismatch repair
DNA Repair, 2018DNA mismatch repair (MMR) is a highly conserved process and ensures the removal of mispaired DNA bases and insertion-deletion loops right after replication. For this, a MutSα or MutSβ protein complex recognizes the DNA damage, MutLα nicks the erroneous strand, exonuclease 1 removes the wrong nucleotides, DNA polymerase δ refills the gap and DNA ligase ...
Isabel Madeleine Weßbecher +1 more
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DNA mismatch repair and Lynch syndrome
Journal of Molecular Histology, 2006The evolutionary conserved mismatch repair proteins correct a wide range of DNA replication errors. Their importance as guardians of genetic integrity is reflected by the tremendous decrease of replication fidelity (two to three orders of magnitude) conferred by their loss.
Guido, Plotz +2 more
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DNA MISMATCH REPAIR AND GENETIC INSTABILITY
Annual Review of Genetics, 2000▪ Abstract Mismatch repair (MMR) systems play a central role in promoting genetic stability by repairing DNA replication errors, inhibiting recombination between non-identical DNA sequences and participating in responses to DNA damage. The discovery of a link between human cancer and MMR defects has led to an explosion of research on eukaryotic MMR ...
B D, Harfe, S, Jinks-Robertson
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The cell cycle and DNA mismatch repair
Experimental Cell Research, 2007The DNA mismatch repair (MMR) pathway contributes to the fidelity of DNA synthesis and recombination by correcting mispaired nucleotides and insertion/deletion loops (IDLs). We have investigated whether MMR protein expression, activity, and subcellular location are altered during discrete phases of the cell cycle in mammalian cells.
Allen G, Schroering +3 more
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2010
The genome is subject to multiple forms of stress and damage that can lead to alterations in the integrity of DNA. The cell nucleus possesses several complex, integrated enzyme systems that identify altered DNA and repair it or, in the case of overwhelming damage, trigger cell death, which prevents the passage of a mutation to the next generation of ...
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The genome is subject to multiple forms of stress and damage that can lead to alterations in the integrity of DNA. The cell nucleus possesses several complex, integrated enzyme systems that identify altered DNA and repair it or, in the case of overwhelming damage, trigger cell death, which prevents the passage of a mutation to the next generation of ...
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Constitutive deficiency in DNA mismatch repair
Clinical Genetics, 2007Mutations in the DNA mismatch repair (MMR) genes are associated with the inheritance of hereditary non‐polyposis colorectal cancer, also known as Lynch syndrome, a cancer syndrome with an average age at onset of 44. Individuals presenting with colorectal cancer are diagnosed with Lynch I, whereas individuals who present with extra‐colonic tumors (such ...
K E A, Felton +2 more
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2016
The DNA replication machinery synthesizes ~500 DNA base pairs every second in bacteria and ~50 base pairs every second in eukaryotes [1]. Mismatches can occur in a newly synthesized DNA due to misincorporation of nucleotides by DNA polymerase or slippage during DNA replication.
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The DNA replication machinery synthesizes ~500 DNA base pairs every second in bacteria and ~50 base pairs every second in eukaryotes [1]. Mismatches can occur in a newly synthesized DNA due to misincorporation of nucleotides by DNA polymerase or slippage during DNA replication.
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DNA mismatch repair and colorectal cancer
The Journal of Pathology, 1998Colorectal cancer is the second commonest malignancy in the western world, accounting for 20,000 deaths in the U.K. per year. Over the last 10 years, great strides have been made in our understanding of the molecular controls governing the transition from normal mucosa, through adenoma, and finally to carcinoma.
N J, Toft, M J, Arends
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