Human mismatch repair system balances mutation rates between strands by removing more mismatches from the lagging strand.

Abstract excerpt

Mismatch repair (MMR) is one of the main systems maintaining fidelity of replication. Differences in correction of errors produced during replication of the leading and the lagging DNA strands were reported in yeast and in human cancers, but the causes of these differences remain unclear. Here, we analyze data on human cancers with somatic mutations in two of the major DNA polymerases, delta and epsilon, that...

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