Article
Proofreading deficiency of Pol I increases the levels of spontaneous rpoB mutations in E. coli.
Mutation research - 1 Jul 2011
Makiela-Dzbenska K, Jonczyk P, Schaaper R M, Fijalkowska I J
Abstract excerpt
The fidelity role of DNA polymerase I in chromosomal DNA replication in E. coli was investigated using the rpoB forward target. These experiments indicated that in a strain carrying a proofreading-exonuclease-defective form of Pol I (polAexo mutant) the frequency of rpoB mutations increased by about 2-fold, consistent with a model that the fidelity of DNA polymerase I is important in controlling the overall...
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