Template-switching during replication fork repair in bacteria.
Template-switching during replication fork repair in bacteria.
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DOI:
10.1016/j.dnarep.2017.06.014
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发表时间:
2017-08
期刊:
影响因子:
3.8
通讯作者:
Lovett ST
中科院分区:
文献类型:
--
作者:
Lovett ST
Replication forks frequently are challenged by lesions on the DNA template, replication-impeding DNA secondary structures, tightly bound proteins or nucleotide pool imbalance. Studies in bacteria have suggested that under these circumstances the fork may leave behind single-strand DNA gaps that are subsequently filled by homologous recombination, translesion DNA synthesis or template-switching repair synthesis. This review focuses on the template-switching pathways and how the mechanisms of these processes have been deduced from biochemical and genetic studies. I discuss how template-switching can contribute significantly to genetic instability, including mutational hotspots and frequent genetic rearrangements, and how template-switching may be elicited by replication fork damage.
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