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Recognition of 5′ Triphosphate by RIG-I Helicase Requires Short Blunt Double-Stranded RNA as Contained in Panhandle of Negative-Strand Virus

Open access
Schlee, Martin, Roth, Andreas, Hornung, Veit, Hagmann, Cristina Amparo, Wimmenauer, Vera, Barchet, Winfried, Coch, Christoph, Janke, Markus, Mihailovic, Aleksandra, Wardle, Greg, Juranek, Stefan, Kato, Hiroki, Kawai, Taro, Poeck, Hendrik, Fitzgerald, Katherine A., Takeuchi, Osamu, Akira, Shizuo, Tuschl, Thomas, Latz, Eicke, Ludwig, Janos, Hartmann, Gunther·2009·Immunity

Abstract

Antiviral immunity is triggered by immunorecognition of viral nucleic acids. The cytosolic helicase RIG-I is a key sensor of viral infections and is activated by RNA containing a triphosphate at the 5′end. The exact structure of RNA activating RIG-I remains controversial. Here we established a chemical approach for 5′triphosphate oligoribonucleotide synthesis and found that synthetic single-stranded 5′triphosphate oligoribonucleotides were unable to bind and activate RIG-I. Conversely, the addition of the synthetic complementary strand resulted in optimal binding and activation of RIG-I. Short double strand conformation with base pairing of the nucleoside carrying the 5′triphosphate was required. RIG-I activation was impaired by a 3′overhang at the 5′triphosphate end. These results define the structure of RNA for full RIG-I activation and explain how RIG-I detects negative strand RNA viruses which lack long double-stranded RNA but do contain panhandle blunt short double-stranded 5′triphosphate RNA in their single-stranded genome.

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Crossref · 10.1016/j.immuni.2009.05.008

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Metadata

Authors
Schlee, M., Roth, A., Hornung, V., Hagmann, C. A., Wimmenauer, V., Barchet, W., Coch, C., Janke, M., Mihailovic, A., Wardle, G., Juranek, S., Kato, H., Kawai, T., Poeck, H., Fitzgerald, K. A., Takeuchi, O., Akira, S., Tuschl, T., Latz, E., Ludwig, J., & Hartmann, G.
Venue
Immunity
Publisher
Elsevier BV
Published
2009-07
Volume
31
Issue
1
Pages
25-34
ISSN
1074-7613 (ISSN-L)
OpenAlex
W2032948492
Cited by
789
References
4
FWCI
23.67
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Recognition of 5′ Triphosphate by RIG-I Helicase Requires Short Blunt Double-Stranded RNA as Contained in Panhandle of Negative-Strand Virus. https://app.cochat.ai/papers/10.1016/j.immuni.2009.05.008
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Schlee, M., Roth, A., Hornung, V., Hagmann, C. A., Wimmenauer, V., Barchet, W., Coch, C., Janke, M., Mihailovic, A., Wardle, G., Juranek, S., Kato, H., Kawai, T., Poeck, H., Fitzgerald, K. A., Takeuchi, O., Akira, S., Tuschl, T., Latz, E., . . . Hartmann, G. (2009). Recognition of 5′ Triphosphate by RIG-I Helicase Requires Short Blunt Double-Stranded RNA as Contained in Panhandle of Negative-Strand Virus. Immunity. https://doi.org/10.1016/j.immuni.2009.05.008

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.