4F3T

Human Argonaute-2 - miR-20a complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.208 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The Structure of Human Argonaute-2 in Complex with miR-20a.

Elkayam, E.Kuhn, C.D.Tocilj, A.Haase, A.D.Greene, E.M.Hannon, G.J.Joshua-Tor, L.

(2012) Cell 150: 100-110

  • DOI: 10.1016/j.cell.2012.05.017
  • Primary Citation of Related Structures:  
    4F3T

  • PubMed Abstract: 
  • Argonaute proteins lie at the heart of the RNA-induced silencing complex (RISC), wherein they use small RNA guides to recognize targets. Initial insight into the architecture of Argonautes came from studies of prokaryotic proteins, revealing a cresce ...

    Argonaute proteins lie at the heart of the RNA-induced silencing complex (RISC), wherein they use small RNA guides to recognize targets. Initial insight into the architecture of Argonautes came from studies of prokaryotic proteins, revealing a crescent-shaped base made up of the amino-terminal, PAZ, middle, and PIWI domains. The recently reported crystal structure of human Argonaute-2 (hAgo2), the "slicer" in RNA interference, in complex with a mixed population of RNAs derived from insect cells provides insight into the architecture of a eukaryotic Argonaute protein with defined biochemical and biological functions. Here, we report the structure of human Ago2 bound to a physiologically relevant microRNA, microRNA-20a, at 2.2 Å resolution. The miRNA is anchored at both ends by the Mid and PAZ domains and makes several kinks and turns along the binding groove. Interestingly, miRNA binding confers remarkable stability on hAgo2, locking this otherwise flexible enzyme into a stable conformation.


    Organizational Affiliation

    W. M. Keck Structural Biology Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY 11724, USA.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein argonaute-2A861Homo sapiensMutation(s): 0 
Gene Names: AGO2Argonaute2eIF-2C 2eIF2C 2EIF2C2Eukaryotic translation initiation factor 2C 2hAgo2Human Argonaute-2PAZ Piwi domain protein
EC: 3.1.26
Find proteins for Q9UKV8 (Homo sapiens)
Explore Q9UKV8 
Go to UniProtKB:  Q9UKV8
NIH Common Fund Data Resources
PHAROS  Q9UKV8
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 2
    MoleculeChainsLengthOrganismImage
    RNA (5'-R(P*UP*AP*AP*AP*GP*UP*GP*CP*UP*UP*AP*UP*AP*GP*UP*G*CP*AP*GP*G)-3')R20Homo sapiens
    Small Molecules
    Ligands 1 Unique
    IDChainsName / Formula / InChI Key2D Diagram3D Interactions
    IPH
    Query on IPH

    Download CCD File 
    A
    PHENOL
    C6 H6 O
    ISWSIDIOOBJBQZ-UHFFFAOYSA-N
     Ligand Interaction
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 2.25 Å
    • R-Value Free: 0.254 
    • R-Value Work: 0.207 
    • R-Value Observed: 0.208 
    • Space Group: P 1 21 1
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 63.427α = 90
    b = 107.651β = 106.69
    c = 68.718γ = 90
    Software Package:
    Software NamePurpose
    DENZOdata reduction
    SCALEPACKdata scaling
    SHARPphasing
    SOLOMONphasing
    PHENIXrefinement
    PDB_EXTRACTdata extraction
    HKL-2000data collection

    Structure Validation

    View Full Validation Report



    Entry History 

    Deposition Data

    Revision History 

    • Version 1.0: 2012-05-30
      Type: Initial release
    • Version 1.1: 2012-07-25
      Changes: Database references
    • Version 1.2: 2017-11-15
      Changes: Advisory, Refinement description