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Structural basis for the recognition of guide RNA and target DNA heteroduplex by Argonaute

Author

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  • Tomohiro Miyoshi

    (Center for Transdisciplinary Research, Niigata University)

  • Kosuke Ito

    (Faculty of Science, Niigata University)

  • Ryo Murakami

    (Faculty of Science, Niigata University)

  • Toshio Uchiumi

    (Faculty of Science, Niigata University)

Abstract

Argonaute proteins are key players in the gene silencing mechanisms mediated by small nucleic acids in all domains of life from bacteria to eukaryotes. However, little is known about the Argonaute protein that recognizes guide RNA/target DNA. Here, we determine the 2 Å crystal structure of Rhodobacter sphaeroides Argonaute (RsAgo) in a complex with 18-nucleotide guide RNA and its complementary target DNA. The heteroduplex maintains Watson–Crick base-pairing even in the 3′-region of the guide RNA between the N-terminal and PIWI domains, suggesting a recognition mode by RsAgo for stable interaction with the target strand. In addition, the MID/PIWI interface of RsAgo has a system that specifically recognizes the 5′ base-U of the guide RNA, and the duplex-recognition loop of the PAZ domain is important for the DNA silencing activity. Furthermore, we show that Argonaute discriminates the nucleic acid type (RNA/DNA) by recognition of the duplex structure of the seed region.

Suggested Citation

  • Tomohiro Miyoshi & Kosuke Ito & Ryo Murakami & Toshio Uchiumi, 2016. "Structural basis for the recognition of guide RNA and target DNA heteroduplex by Argonaute," Nature Communications, Nature, vol. 7(1), pages 1-12, September.
  • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11846
    DOI: 10.1038/ncomms11846
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    Cited by:

    1. Pengdbamba Dieudonné Zongo & Nicolas Cabanel & Guilhem Royer & Florence Depardieu & Alain Hartmann & Thierry Naas & Philippe Glaser & Isabelle Rosinski-Chupin, 2024. "An antiplasmid system drives antibiotic resistance gene integration in carbapenemase-producing Escherichia coli lineages," Nature Communications, Nature, vol. 15(1), pages 1-15, December.
    2. Xinmi Song & Sheng Lei & Shunhang Liu & Yanqiu Liu & Pan Fu & Zhifeng Zeng & Ke Yang & Yu Chen & Ming Li & Qunxin She & Wenyuan Han, 2023. "Catalytically inactive long prokaryotic Argonaute systems employ distinct effectors to confer immunity via abortive infection," Nature Communications, Nature, vol. 14(1), pages 1-16, December.
    3. Ning Cui & Jun-Tao Zhang & Zhuolin Li & Xiao-Yu Liu & Chongyuan Wang & Hongda Huang & Ning Jia, 2022. "Structural basis for the non-self RNA-activated protease activity of the type III-E CRISPR nuclease-protease Craspase," Nature Communications, Nature, vol. 13(1), pages 1-13, December.
    4. Lidiya Lisitskaya & Yeonoh Shin & Aleksei Agapov & Anna Olina & Ekaterina Kropocheva & Sergei Ryazansky & Alexei A. Aravin & Daria Esyunina & Katsuhiko S. Murakami & Andrey Kulbachinskiy, 2022. "Programmable RNA targeting by bacterial Argonaute nucleases with unconventional guide binding and cleavage specificity," Nature Communications, Nature, vol. 13(1), pages 1-15, December.
    5. Xiangkai Zhen & Xiaolong Xu & Le Ye & Song Xie & Zhijie Huang & Sheng Yang & Yanhui Wang & Jinyu Li & Feng Long & Songying Ouyang, 2024. "Structural basis of antiphage immunity generated by a prokaryotic Argonaute-associated SPARSA system," Nature Communications, Nature, vol. 15(1), pages 1-13, December.

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