Mismatch Repair

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DNA mismatch repair.

DNA mismatch repair (MMR) is an evolutionarily conserved process that corrects mismatches generated during DNA replication and escape proofreading. MMR proteins also participate in many other DNA transactions, such that inactivation of MMR can have wide-ranging biological consequences, which can be either beneficial or detrimental. We begin this review by briefly considering the multiple functi...

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SnapShot: DNA Mismatch Repair

Mismatch Repair in Bacteria and Eukaryotes Mismatch repair in the bacterium Escherichia coli is initiated when a homodimer of MutS binds as an asymmetric clamp to DNA containing a variety of base-base and insertion-deletion mismatches. The MutL homodimer then couples MutS recognition to the signal that distinguishes between the template and nascent DNA strands. In E. coli, the lack of adenine m...

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Mismatch repair: Origin of species?

Mismatch repair reverses replication errors and inhibits recombination between diverged sequences. This has been suggested to be important in speciation, especially in prokaryotes, but theoretical analysis indicates that genetic divergence in bacterial populations is not constrained by naturally occurring recombination levels.

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An end for mismatch repair.

D NA mismatch repair (MMR) is an important postreplicative repair mechanism that removes DNA polymerization errors and is responsible for increasing the fidelity of genome replication by orders of magnitude. Defects in MMR lead to the most common form of hereditary colon cancer and a variety of sporadic cancers (1–3). One of the main features of MMR is its ability to distinguish old and new DNA...

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EGFR inhibits DNA mismatch repair.

Safeguarding the integrity of the genome should not be left to chance. Indeed, all organisms have highly effective mechanisms to detect and remove errors and lesions in DNA. DNA mismatch repair (MMR) serves as the final safeguard in assuring the fidelity of DNA replication from bacteria to humans and backstops the nucleotide selection and exonuclease proofreading activities of replicative polym...

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ژورنال

عنوان ژورنال: Journal of Biological Chemistry

سال: 2015

ISSN: 0021-9258

DOI: 10.1074/jbc.r115.660142