Evolutionary and mechanistic diversity of Type I-F CRISPR-associated transposons.

Evolutionary and mechanistic diversity of Type I-F CRISPR-associated transposons.
复制标题

DOI:
10.1016/j.molcel.2021.12.021
复制
发表时间:
2022-02-03
期刊:
影响因子:
16
通讯作者:
Sternberg SH
Sternberg SH
中科院分区:
生物学1区
文献类型:
--
作者:
Klompe SE;Jaber N;Beh LY;Mohabir JT;Bernheim A;Sternberg SH

文献摘要

参考文献

被引文献

相似文献

典型的CRISPR-Cas系统利用RNA引导的核酸酶来靶向切割外源核酸,而一些核酸酶缺陷的CRISPR-Cas复合物已被重新用于引导Tn 7样转座子的插入。在这里,我们建立了一个生物信息学和实验管道,以全面探索I-F型CRISPR相关转座子的多样性。我们报告了20个系统的DNA整合,并确定了一个高度活跃的子集,表现出完全正交的转座子DNA动员。我们通过探索靶向模块的水平获取,并通过表征编码可编程的RNA依赖性途径和固定的RNA非依赖性途径的系统,揭示了CRISPR相关转座子的模块化性质。最后,我们分析了转座子编码的货物基因,发现了抗噬菌体防御系统的惊人存在,表明在细菌之间传递先天免疫中的作用。总的来说,这项研究大大推进了我们对CRISPR相关转座子功能的生物学理解,并扩展了用于可编程大规模基因组工程的RNA引导转座酶套件。Klompe等人探索了CRISPR相关转座子的天然多样性和功能,这些转座子指导RNA引导的DNA整合。对18个新系统的进一步研究揭示了执行DNA靶向和DNA插入的分子机器的模块化性质。选择高效率,高保真度,和完全正交的系统报告。
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.
DOI: 10.1038/s41467-020-20633-y
发表时间: 2021-01-22
影响因子: 16.6
作者:
Collias D;Beisel CL
通讯作者: Beisel CL
DOI: 10.1016/j.molcel.2016.02.031
发表时间: 2016-04-07
期刊: Molecular cell
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
DOI: 10.1093/nar/gkab301
发表时间: 2021-07-02
影响因子: 14.9
作者:
Letunic I;Bork P
通讯作者: Bork P
DOI: 10.1038/s41586-019-1849-0
发表时间: 2020-01-09
期刊: NATURE
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.