1P7N

Dimeric Rous Sarcoma virus Capsid protein structure with an upstream 25-amino acid residue extension of C-terminal of Gag p10 protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.260 
  • R-Value Observed: 0.260 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Dimeric rous sarcoma virus capsid protein structure relevant to immature gag assembly

Nandhagopal, N.Simpson, A.A.Johnson, M.C.Francisco, A.B.Schatz, G.W.Rossmann, M.G.Vogt, V.M.

(2004) J Mol Biol 335: 275-282

  • DOI: https://doi.org/10.1016/j.jmb.2003.10.034
  • Primary Citation of Related Structures:  
    1P7N

  • PubMed Abstract: 

    The structure of the N-terminal domain (NTD) of Rous sarcoma virus (RSV) capsid protein (CA), with an upstream 25 amino acid residue extension corresponding to the C-terminal portion of the Gag p10 protein, has been determined by X-ray crystallography. Purified Gag proteins of retroviruses can assemble in vitro into virus-like particles closely resembling in vivo-assembled immature virus particles, but without a membrane. When the 25 amino acid residues upstream of CA are deleted, Gag assembles into tubular particles. The same phenotype is observed in vivo. Thus, these residues act as a "shape determinant" promoting spherical assembly, when they are present, or tubular assembly, when they are absent. We show that, unlike the NTD on its own, the extended NTD protein has no beta-hairpin loop at the N terminus of CA and that the molecule forms a dimer in which the amino-terminal extension forms the interface between monomers. Since dimerization of Gag has been inferred to be a critical step in assembly of spherical, immature Gag particles, the dimer interface may represent a structural feature that is essential in retrovirus assembly.


  • Organizational Affiliation

    Department of Biological Sciences, Lilly Hall, Purdue University, 915 W. State Street, West Lafayette, IN 47907-2054, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
GAG POLYPROTEIN CAPSID PROTEIN P27176Rous sarcoma virusMutation(s): 0 
UniProt
Find proteins for P03322 (Rous sarcoma virus subgroup C (strain Prague))
Explore P03322 
Go to UniProtKB:  P03322
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03322
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.260 
  • R-Value Observed: 0.260 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.87α = 90
b = 47.87β = 90
c = 170.39γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-12-23
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2023-08-16
    Changes: Data collection, Database references, Refinement description