5EJK

Crystal structure of the Rous sarcoma virus intasome


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.8 Å
  • R-Value Free: 0.294 
  • R-Value Work: 0.254 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Crystal structure of the Rous sarcoma virus intasome.

Yin, Z.Shi, K.Banerjee, S.Pandey, K.K.Bera, S.Grandgenett, D.P.Aihara, H.

(2016) Nature 530: 362-366

  • DOI: 10.1038/nature16950

  • PubMed Abstract: 
  • Integration of the reverse-transcribed viral DNA into the host genome is an essential step in the life cycle of retroviruses. Retrovirus integrase catalyses insertions of both ends of the linear viral DNA into a host chromosome. Integrase from HIV-1 ...

    Integration of the reverse-transcribed viral DNA into the host genome is an essential step in the life cycle of retroviruses. Retrovirus integrase catalyses insertions of both ends of the linear viral DNA into a host chromosome. Integrase from HIV-1 and closely related retroviruses share the three-domain organization, consisting of a catalytic core domain flanked by amino- and carboxy-terminal domains essential for the concerted integration reaction. Although structures of the tetrameric integrase-DNA complexes have been reported for integrase from prototype foamy virus featuring an additional DNA-binding domain and longer interdomain linkers, the architecture of a canonical three-domain integrase bound to DNA remained elusive. Here we report a crystal structure of the three-domain integrase from Rous sarcoma virus in complex with viral and target DNAs. The structure shows an octameric assembly of integrase, in which a pair of integrase dimers engage viral DNA ends for catalysis while another pair of non-catalytic integrase dimers bridge between the two viral DNA molecules and help capture target DNA. The individual domains of the eight integrase molecules play varying roles to hold the complex together, making an extensive network of protein-DNA and protein-protein contacts that show both conserved and distinct features compared with those observed for prototype foamy virus integrase. Our work highlights the diversity of retrovirus intasome assembly and provides insights into the mechanisms of integration by HIV-1 and related retroviruses.


    Organizational Affiliation

    Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, Minnesota 55455, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Gag-Pro-Pol polyprotein
A, B, C, D, E, F, G, H
270Rous sarcoma virus (strain Prague C)Mutation(s): 7 
Gene Names: gag-pol
Find proteins for P03354 (Rous sarcoma virus (strain Prague C))
Go to UniProtKB:  P03354
Entity ID: 2
MoleculeChainsLengthOrganism
RSV IntegraseI,L42Rous sarcoma virus (strain Schmidt-Ruppin E)
Entity ID: 3
MoleculeChainsLengthOrganism
DNA (5'-D(*AP*AP*TP*GP*TP*TP*GP*TP*CP*TP*TP*AP*TP*GP*CP*AP*AP*TP*AP*CP*TP*C)-3')J,M22Rous sarcoma virus (strain Schmidt-Ruppin E)
Entity ID: 4
MoleculeChainsLengthOrganism
DNA (5'-D(*CP*TP*TP*CP*TP*CP*TP*C)-3')K,N8Homo sapiens
Entity ID: 5
MoleculeChainsLengthOrganism
DNA (5'-D(*AP*GP*TP*GP*TP*CP*TP*T)-3')k,n8Homo sapiens
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B, C, D, E, F, G, H
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
W
Query on W

Download SDF File 
Download CCD File 
A, B, F, G
TUNGSTEN ION
W
FZFRVZDLZISPFJ-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D, E, F, G, H
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.8 Å
  • R-Value Free: 0.294 
  • R-Value Work: 0.254 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 124.936α = 90.00
b = 157.854β = 110.94
c = 126.583γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
XSCALEdata scaling
PHASERphasing
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-02-17
    Type: Initial release