Structure and activity of the RNA-targeting Type III-B CRISPR-Cas complex of Thermus thermophilus.
Structure and activity of the RNA-targeting Type III-B CRISPR-Cas complex of Thermus thermophilus.
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Thermus Thermophilus的III-B CRISPR-CAS复合物的结构和活性。
DOI:
10.1016/j.molcel.2013.09.013
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发表时间:
2013-10-10
期刊:
影响因子:
16
通讯作者:
Shinkai, Akeo
中科院分区:
文献类型:
--
作者:
Staals, Raymond H. J.;Agari, Yoshihiro;Maki-Yonekura, Saori;Zhu, Yifan;Taylor, David W.;van Duijn, Esther;Barendregt, Arjan;Vlot, Marnix;Koehorst, Jasper J.;Sakamoto, Keiko;Masuda, Akiko;Dohmae, Naoshi;Schaap, Peter J.;Doudna, Jennifer A.;Heck, Albert J. R.;Yonekura, Koji;van der Oost, John;Shinkai, Akeo
The CRISPR-Cas system is a prokaryotic host defense system against genetic elements. The Type III-B CRISPR-Cas system of the bacterium Thermus thermophilus, the TtCmr complex, is composed of six different protein subunits (Cmr1-6) and one crRNA with a stoichiometry of Cmr112131445361:crRNA1. The TtCmr complex co-purifies with crRNA species of 40 and 46 nt, originating from a distinct subset of CRISPR loci and spacers. The TtCmr complex cleaves the target RNA at multiple sites with 6 nt intervals via a 5’ ruler mechanism. Electron microscopy revealed that the structure of TtCmr resembles a ‘sea worm’ and is composed of a Cmr2-3 heterodimer ‘tail’, a helical backbone of Cmr4 subunits capped by Cmr5 subunits, and a curled ‘head’ containing Cmr1 and Cmr6. Despite having a backbone of only four Cmr4 subunits and being both longer and narrower, the overall architecture of TtCmr resembles that of Type I Cascade complexes.
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影响因子:
16
作者:
Hale, Caryn R.;Majumdar, Sonali;Elmore, Joshua;Pfister, Neil;Compton, Mark;Olson, Sara;Resch, Alissa M.;Glover, Claiborne V. C., III;Graveley, Brenton R.;Terns, Rebecca M.;Terns, Michael P.
通讯作者:
Terns, Michael P.
DOI:
10.1126/science.1165771
发表时间:
2008-12-19
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Marraffini LA;Sontheimer EJ
通讯作者:
Sontheimer EJ
影响因子:
48
作者:
Langmead, Ben;Salzberg, Steven L.
通讯作者:
Salzberg, Steven L.
影响因子:
56.9
作者:
Jinek, Martin;Chylinski, Krzysztof;Charpentier, Emmanuelle
通讯作者:
Charpentier, Emmanuelle
影响因子:
1.6
作者:
Fang, Lei;Jia, Kun-Zhi;Hua, Zi-Chun
通讯作者:
Hua, Zi-Chun