5W6V

The Structure of human Argonaute-1 in complex with the hook motif of human GW182


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.83 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.202 

wwPDB Validation 3D Report Full Report


This is version 1.5 of the entry. See complete history


Literature

Multivalent Recruitment of Human Argonaute by GW182.

Elkayam, E.Faehnle, C.R.Morales, M.Sun, J.Li, H.Joshua-Tor, L.

(2017) Mol Cell 67: 646-658.e3

  • DOI: 10.1016/j.molcel.2017.07.007
  • Primary Citation of Related Structures:  
    5W6V

  • PubMed Abstract: 
  • In miRNA-mediated gene silencing, the physical interaction between human Argonaute (hAgo) and GW182 (hGW182) is essential for facilitating the downstream silencing of the targeted mRNA. GW182 can interact with hAgo via three of the GW/WG repeats in its Argonaute-binding domain: motif-1, motif-2, and the hook motif ...

    In miRNA-mediated gene silencing, the physical interaction between human Argonaute (hAgo) and GW182 (hGW182) is essential for facilitating the downstream silencing of the targeted mRNA. GW182 can interact with hAgo via three of the GW/WG repeats in its Argonaute-binding domain: motif-1, motif-2, and the hook motif. The structure of hAgo1 in complex with the hook motif of hGW182 reveals a "gate"-like interaction that is critical for GW182 docking into one of hAgo1's tryptophan-binding pockets. We show that hAgo1 and hAgo2 have a single GW182-binding site and that miRNA binding increases hAgo's affinity to GW182. With target binding occurring rapidly, this ensures that only mature RISC would be recruited for silencing. Finally, we show that hGW182 can recruit up to three copies of hAgo via its three GW motifs. This may explain the observed cooperativity in miRNA-mediated gene silencing.


    Organizational Affiliation

    Keck Structural Biology Laboratory, Howard Hughes Medical Institute, Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA. Electronic address: leemor@cshl.edu.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein argonaute-1A859Homo sapiensMutation(s): 0 
Gene Names: AGO1EIF2C1
Find proteins for Q9UL18 (Homo sapiens)
Explore Q9UL18 
Go to UniProtKB:  Q9UL18
NIH Common Fund Data Resources
PHAROS  Q9UL18
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Trinucleotide repeat-containing gene 6A proteinB24Homo sapiensMutation(s): 0 
Gene Names: TNRC6ACAGH26KIAA1460TNRC6
Find proteins for Q8NDV7 (Homo sapiens)
Explore Q8NDV7 
Go to UniProtKB:  Q8NDV7
NIH Common Fund Data Resources
PHAROS  Q8NDV7
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 2
    MoleculeChainsLengthOrganismImage
    RNA (5'-R(P*AP*AP*UP*AP*UP*UP*AP*AP*AP*A)-3')R20Spodoptera frugiperda
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 2.83 Å
    • R-Value Free: 0.245 
    • R-Value Work: 0.200 
    • R-Value Observed: 0.202 
    • Space Group: P 21 21 2
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 93.75α = 90
    b = 136.861β = 90
    c = 86.054γ = 90
    Software Package:
    Software NamePurpose
    PHENIXrefinement
    XSCALEdata scaling
    SCALAdata scaling
    PHASERphasing

    Structure Validation

    View Full Validation Report



    Entry History & Funding Information

    Deposition Data


    Funding OrganizationLocationGrant Number
    Howard Hughes Medical Institute (HHMI)United States--

    Revision History 

    • Version 1.0: 2017-07-26
      Type: Initial release
    • Version 1.1: 2017-08-09
      Changes: Database references
    • Version 1.2: 2017-08-23
      Changes: Database references
    • Version 1.3: 2017-08-30
      Changes: Database references
    • Version 1.4: 2017-11-22
      Changes: Refinement description
    • Version 1.5: 2019-11-20
      Changes: Author supporting evidence