3NCU

Structural and functional insights into pattern recognition by the innate immune receptor RIG-I


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural and functional insights into 5'-ppp RNA pattern recognition by the innate immune receptor RIG-I.

Wang, Y.Ludwig, J.Schuberth, C.Goldeck, M.Schlee, M.Li, H.Juranek, S.Sheng, G.Micura, R.Tuschl, T.Hartmann, G.Patel, D.J.

(2010) Nat Struct Mol Biol 17: 781-787

  • DOI: 10.1038/nsmb.1863
  • Primary Citation of Related Structures:  
    3NCU

  • PubMed Abstract: 
  • RIG-I is a cytosolic helicase that senses 5'-ppp RNA contained in negative-strand RNA viruses and triggers innate antiviral immune responses. Calorimetric binding studies established that the RIG-I C-terminal regulatory domain (CTD) binds to blunt-en ...

    RIG-I is a cytosolic helicase that senses 5'-ppp RNA contained in negative-strand RNA viruses and triggers innate antiviral immune responses. Calorimetric binding studies established that the RIG-I C-terminal regulatory domain (CTD) binds to blunt-end double-stranded 5'-ppp RNA a factor of 17 more tightly than to its single-stranded counterpart. Here we report on the crystal structure of RIG-I CTD bound to both blunt ends of a self-complementary 5'-ppp dsRNA 12-mer, with interactions involving 5'-pp clearly visible in the complex. The structure, supported by mutation studies, defines how a lysine-rich basic cleft within the RIG-I CTD sequesters the observable 5'-pp of the bound RNA, with a stacked phenylalanine capping the terminal base pair. Key intermolecular interactions observed in the crystalline state are retained in the complex of 5'-ppp dsRNA 24-mer and full-length RIG-I under in vivo conditions, as evaluated from the impact of binding pocket RIG-I mutations and 2'-OCH(3) RNA modifications on the interferon response.


    Organizational Affiliation

    Structural Biology Program, Memorial Sloan-Kettering Cancer Center, New York, New York, USA.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RIG-IA, B134Homo sapiensMutation(s): 0 
Gene Names: DDX58RIG-I
EC: 3.6.1 (PDB Primary Data), 3.6.4.13 (UniProt)
Find proteins for O95786 (Homo sapiens)
Explore O95786 
Go to UniProtKB:  O95786
NIH Common Fund Data Resources
PHAROS  O95786
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 2
    MoleculeChainsLengthOrganismImage
    5'-R(*(GDP)P*AP*CP*GP*CP*UP*AP*GP*CP*GP*UP*C)-3'C, D12N/A
    Small Molecules
    Ligands 1 Unique
    IDChainsName / Formula / InChI Key2D Diagram3D Interactions
    ZN
    Query on ZN

    Download CCD File 
    A, B
    ZINC ION
    Zn
    PTFCDOFLOPIGGS-UHFFFAOYSA-N
     Ligand Interaction
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 2.55 Å
    • R-Value Free: 0.229 
    • R-Value Work: 0.190 
    • R-Value Observed: 0.192 
    • Space Group: P 65
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 83.462α = 90
    b = 83.462β = 90
    c = 110.364γ = 120
    Software Package:
    Software NamePurpose
    HKL-2000data collection
    PHASERphasing
    PHENIXrefinement
    HKL-2000data reduction
    HKL-2000data scaling

    Structure Validation

    View Full Validation Report



    Entry History 

    Deposition Data

    • Deposited Date: 2010-06-05 
    • Released Date: 2010-06-30 
    • Deposition Author(s): Sheng, G., Li, H.

    Revision History 

    • Version 1.0: 2010-06-30
      Type: Initial release
    • Version 1.1: 2011-07-13
      Changes: Version format compliance