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Organisms control the specificity and frequency with which they mutate via their complement of proteins. The mismatch repair (MMR) proteins correct errors after they are made. The DNA polymerases of the cell determine the response to damaged DNA which has not been repaired by excision. Polymerase action can be considered as consisting of three main steps: addition of a base, proofreading of the added...
DNA replication is a highly accurate process designed to duplicate the entire genome of a cell during each cell division. The accuracy of DNA replication is derived from the balance between three important components: base selectivity by the replicative DNA polymerases (pols), exonucleolytic proofreading, and post-replicative mismatch repair. Previously we identified a human 3'-5' exonuclease (exoN)...
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