Ring nucleases deactivate type III CRISPR ribonucleases by degrading cyclic oligoadenylate.
Ring nucleases deactivate type III CRISPR ribonucleases by degrading cyclic oligoadenylate.
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DOI:
10.1038/s41586-018-0557-5
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发表时间:
2018-10
期刊:
影响因子:
64.8
通讯作者:
White MF
中科院分区:
文献类型:
--
作者:
Athukoralage JS;Rouillon C;Graham S;Grüschow S;White MF
The CRISPR system provides adaptive immunity against mobile genetic elements in prokaryotes, utilising small CRISPR RNAs which direct effector complexes to degrade invading nucleic acids. Type III effector complexes were recently demonstrated to synthesise a novel second messenger, cyclic oligoadenylate (cOA), on binding target RNA. cOA in turn binds to and activates ribonucleases and other factors via a CARF (CRISPR associated Rossman Fold) domain, inducing an antiviral state in the cell that is important for immunity. The mechanism of the “off-switch” that resets the system is not understood. Here, we report the identification of the nuclease that degrades these cOA ring molecules. The “Ring nuclease” is itself a CARF family protein with a metal independent mechanism, which cleaves cA4 rings to generate linear di-adenylate species and switches off the antiviral state. The identification of Ring nucleases adds an important insight to the CRISPR system.
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DOI:
10.1083/jcb.201004104
发表时间:
2010-05-31
期刊:
The Journal of cell biology
影响因子:
--
作者:
Linkert M;Rueden CT;Allan C;Burel JM;Moore W;Patterson A;Loranger B;Moore J;Neves C;Macdonald D;Tarkowska A;Sticco C;Hill E;Rossner M;Eliceiri KW;Swedlow JR
通讯作者:
Swedlow JR
影响因子:
64.5
作者:
Jiang W;Samai P;Marraffini LA
通讯作者:
Marraffini LA
影响因子:
14.9
作者:
Sokolowski RD;Graham S;White MF
通讯作者:
White MF
影响因子:
4
作者:
Koonin, Eugene V.;Makarova, Kira S.
通讯作者:
Makarova, Kira S.
影响因子:
3.2
作者:
Hatoum-Aslan, Asma;Maniv, Inbal;Marraffini, Luciano A.
通讯作者:
Marraffini, Luciano A.