Cited by 2,563CRISPR and Genetic EngineeringBacterial Genetics and BiotechnologyBacteriophages and microbial interactions

CRISPR RNA Maturation by Trans-Encoded Small RNA and Host Factor RNase III

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Deltcheva, Elitza, Chylinski, Krzysztof, Sharma, Cynthia M., Gonzales, Karine, Chao, Yanjie, Pirzada, Zaid A., Eckert, Maria R., Vogel, Jörg +1 more·2011·Nature

Abstract

CRISPR/Cas systems constitute a widespread class of immunity systems that protect bacteria and archaea against phages and plasmids, and commonly use repeat/spacer-derived short crRNAs to silence foreign nucleic acids in a sequence-specific manner. Although the maturation of crRNAs represents a key event in CRISPR activation, the responsible endoribonucleases (CasE, Cas6, Csy4) are missing in many CRISPR/Cas subtypes. Here, differential RNA sequencing of the human pathogen Streptococcus pyogenes uncovered tracrRNA, a trans-encoded small RNA with 24-nucleotide complementarity to the repeat regions of crRNA precursor transcripts. We show that tracrRNA directs the maturation of crRNAs by the activities of the widely conserved endogenous RNase III and the CRISPR-associated Csn1 protein; all these components are essential to protect S. pyogenes against prophage-derived DNA. Our study reveals a novel pathway of small guide RNA maturation and the first example of a host factor (RNase III) required for bacterial RNA-mediated immunity against invaders.

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Authors
Deltcheva, E., Chylinski, K., Sharma, C. M., Gonzales, K., Chao, Y., Pirzada, Z. A., Eckert, M. R., Vogel, J., & Charpentier, E.
Affiliations
  • Umeå Centre for Microbial Research (SE)
  • University of Vienna (AT)
  • University of Würzburg (DE)
Corresponding author
Charpentier, Emmanuelle
Venue
Nature
Published
2011-03
Volume
471
Issue
7340
Pages
602-607
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2120503144
Cited by
2,563
References
67
Citations by year
2026: 77 · 2025: 143 · 2024: 177 · 2023: 182 · 2022: 221 · 2021: 250 · 2020: 225 · 2019: 207 · 2018: 203 · 2017: 176 · 2016: 195 · 2015: 164 · 2014: 139 · 2013: 116 · 2012: 69
FWCI
44.24
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › CRISPR and Genetic Engineering
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
  • Physical Sciences › Environmental Science › Ecology › Bacteriophages and microbial interactions
Keywords
CRISPR-Cas, tracrRNA, RNase III, Streptococcus pyogenes
MeSH terms
Bacterial Proteins, DNA, Viral, Escherichia coli, Models, Biological, RNA Precursors, RNA Processing, Post-Transcriptional, RNA, Bacterial, Streptococcus pyogenes, Conserved Sequence, Prophages, Ribonuclease III, RNA, Small Untranslated

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