Evolutionary and mechanistic diversity of Type I-F CRISPR-associated transposons.
Evolutionary and mechanistic diversity of Type I-F CRISPR-associated transposons.
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DOI:
10.1016/j.molcel.2021.12.021
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发表时间:
2022-02-03
期刊:
影响因子:
16
通讯作者:
Sternberg SH
中科院分区:
文献类型:
--
作者:
Klompe SE;Jaber N;Beh LY;Mohabir JT;Bernheim A;Sternberg SH
Canonical CRISPR–Cas systems utilize RNA-guided nucleases for targeted cleavage of foreign nucleic acids, whereas some nuclease-deficient CRISPR–Cas complexes have been repurposed to direct the insertion of Tn7-like transposons. Here we established a bioinformatic and experimental pipeline to comprehensively explore the diversity of Type I-F CRISPR-associated transposons. We report DNA integration for 20 systems and identify a highly active subset that exhibit complete orthogonality in transposon DNA mobilization. We reveal the modular nature of CRISPR-associated transposons by exploring the horizontal acquisition of targeting modules and by characterizing a system that encodes both a programmable, RNA-dependent pathway, and a fixed, RNA-independent pathway. Finally, we analyzed transposon-encoded cargo genes and found the striking presence of anti-phage defense systems, suggesting a role in transmitting innate immunity between bacteria. Collectively, this study substantially advances our biological understanding of CRISPR-associated transposon function and expands the suite of RNA-guided transposases for programmable, large-scale genome engineering. Klompe et al. explore the natural diversity and function of CRISPR-associated transposons, which direct RNA-guided DNA integration. Further investigation of eighteen new systems reveals the modular nature of molecular machineries that perform DNA targeting and DNA insertion. A selection of high-efficiency, high-fidelity, and fully orthogonal systems is reported.
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影响因子:
16.6
作者:
Collias D;Beisel CL
通讯作者:
Beisel CL
影响因子:
16
作者:
Leenay RT;Maksimchuk KR;Slotkowski RA;Agrawal RN;Gomaa AA;Briner AE;Barrangou R;Beisel CL
通讯作者:
Beisel CL
DOI:
10.1126/science.aba0372
发表时间:
2020-08-28
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Gao L;Altae-Tran H;Böhning F;Makarova KS;Segel M;Schmid-Burgk JL;Koob J;Wolf YI;Koonin EV;Zhang F
通讯作者:
Zhang F
影响因子:
14.9
作者:
Letunic I;Bork P
通讯作者:
Bork P
影响因子:
64.8
作者:
Halpin-Healy, Tyler S.;Klompe, Sanne E.;Fernandez, Israel S.
通讯作者:
Fernandez, Israel S.