Article
Two mechanisms produce mutation hotspots at DNA breaks in Escherichia coli.
Cell reports - 25 Oct 2012
Shee Chandan, Gibson Janet L, Rosenberg Susan M
Abstract excerpt
Mutation hotspots and showers occur across phylogeny and profoundly influence genome evolution, yet the mechanisms that produce hotspots remain obscure. We report that DNA double-strand breaks (DSBs) provoke mutation hotspots via stress-induced mutation in Escherichia coli. With tet reporters placed 2 kb to 2 Mb (half the genome) away from an I-SceI site, RpoS/DinB-dependent mutations occur maximally within the...
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