The Impact of RNA-DNA Hybrids on Genome Integrity in Bacteria.
The Impact of RNA-DNA Hybrids on Genome Integrity in Bacteria.
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DOI:
10.1146/annurev-micro-102521-014450
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发表时间:
2022-09-08
影响因子:
10.5
通讯作者:
中科院分区:
文献类型:
--
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During the essential processes of DNA replication and transcription, RNA-DNA hybrid intermediates are formed that pose significant risks to genome integrity when left unresolved. To manage RNA-DNA hybrids, all cells rely on RNase H family enzymes that specifically cleave the RNA portion of the many different types of hybrids that form in vivo. Recent experimental advances have provided new insight into how RNA-DNA hybrids form and the consequences to genome integrity that ensue when persistent hybrids remain unresolved. Here we review the types of RNA-DNA hybrids, including R-loops, RNA primers, and ribonucleotide misincorporations, that form during DNA replication and transcription and discuss how each type of hybrid can contribute to genome instability in bacteria. Further, we discuss how bacterial RNase HI, HII, HIII and bacterial FEN enzymes contribute to genome maintenance through the resolution of hybrids.
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McGlynn, Peter
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Yoshikawa, Hirofumi
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Noirot-Gros, MF
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