Sequence- and structure-specific RNA processing by a CRISPR endonuclease.
Sequence- and structure-specific RNA processing by a CRISPR endonuclease.
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DOI:
10.1126/science.1192272
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发表时间:
2010-09-10
期刊:
影响因子:
--
通讯作者:
Doudna JA
中科院分区:
文献类型:
--
作者:
Haurwitz RE;Jinek M;Wiedenheft B;Zhou K;Doudna JA
Many prokaryotes contain genomic clustered regularly interspaced short palindromic repeats (CRISPRs) that confer resistance to invasive genetic elements. Central to this immune system is the production of CRISPR-derived RNAs (crRNAs) following transcription of the CRISPR locus. Here we identify the endoribonuclease (Csy4) responsible for pre-crRNA processing in Pseudomonas aeruginosa. A 1.8 Å crystal structure of Csy4 in complex with its cognate RNA reveals an unexpected recognition mechanism whereby Csy4 makes sequence-specific interactions in the major groove of the CRISPR repeat stem-loop. Together with electrostatic contacts to the phosphate backbone, these enable Csy4 to selectively bind and cleave pre-crRNAs. The active site of Csy4 comprises two invariant residues, a serine and a histidine. The RNA recognition mechanism identified here explains sequence- and structure-specific processing by a large family of CRISPR-specific endoribonucleases.
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DOI:
10.1038/nrg2749
发表时间:
2010-03
期刊:
Nature reviews. Genetics
影响因子:
--
作者:
通讯作者:
--
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
DOI:
10.1073/pnas.112047299
发表时间:
2002-05-28
影响因子:
11.1
作者:
Tang, TH;Bachellerie, JP;Hüttenhofer, A
通讯作者:
Hüttenhofer, A
影响因子:
8
作者:
Ebihara, Akio;Yao, Min;Kuramitsu, Seiki
通讯作者:
Kuramitsu, Seiki
影响因子:
3.6
作者:
Lillestol, Reidun K.;Shah, Shiraz A.;Garrett, Roger A.
通讯作者:
Garrett, Roger A.