Type III-A CRISPR immunity promotes mutagenesis of staphylococci.
Type III-A CRISPR immunity promotes mutagenesis of staphylococci.
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DOI:
10.1038/s41586-021-03440-3
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发表时间:
2021-04
期刊:
影响因子:
64.8
通讯作者:
Marraffini LA
中科院分区:
文献类型:
--
作者:
Mo CY;Mathai J;Rostøl JT;Varble A;Banh DV;Marraffini LA
Horizontal gene transfer (HGT) and mutation are the two major drivers of microbial evolution that enable bacteria to adapt to fluctuating environmental stressors. Clustered, regularly interspaced, short palindromic repeats (CRISPR) systems use RNA-guided nucleases to direct sequence-specific destruction of the genomes of mobile genetic elements that mediate HGT, such as conjugative plasmids and bacteriophages, limiting bacterial evolvability by this mechanism. A subset of CRISPR systems also display non-specific degradation of DNA; however, whether and how this feature impacts the host has not been explored. Here we show that the non-specific DNase activity of the staphylococcal type III-A CRISPR-Cas system increases mutation of the host and accelerates the generation of antibiotic resistance in Staphylococcus aureus and Staphylococcus epidermidis. These mutations require the induction of the SOS response to DNA damage and display a distinct pattern. Our results demonstrate that by differentially affecting both mechanisms that generate genetic diversity, type III-A CRISPR systems can modulate the evolution of the bacterial host.
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DOI:
10.1126/science.aav4294
发表时间:
2018-11-16
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Harrington LB;Burstein D;Chen JS;Paez-Espino D;Ma E;Witte IP;Cofsky JC;Kyrpides NC;Banfield JF;Doudna JA
通讯作者:
Doudna JA
影响因子:
64.8
作者:
Goldberg, Gregory W.;Jiang, Wenyan;Bikard, David;Marraffini, Luciano A.
通讯作者:
Marraffini, Luciano A.
影响因子:
64.5
作者:
Jiang W;Samai P;Marraffini LA
通讯作者:
Marraffini LA
影响因子:
46.9
作者:
Bikard, David;Euler, Chad W.;Jiang, Wenyan;Nussenzweig, Philip M.;Goldberg, Gregory W.;Duportet, Xavier;Fischetti, Vincent A.;Marraffini, Luciano A.
通讯作者:
Marraffini, Luciano A.
影响因子:
48
作者:
Gibson, Daniel G.;Young, Lei;Smith, Hamilton O.
通讯作者:
Smith, Hamilton O.