3H47

X-ray Structure of Hexameric HIV-1 CA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.232 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

X-ray structures of the hexameric building block of the HIV capsid.

Pornillos, O.Ganser-Pornillos, B.K.Kelly, B.N.Hua, Y.Whitby, F.G.Stout, C.D.Sundquist, W.I.Hill, C.P.Yeager, M.

(2009) Cell 137: 1282-1292

  • DOI: 10.1016/j.cell.2009.04.063
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The mature capsids of HIV and other retroviruses organize and package the viral genome and its associated enzymes for delivery into host cells. The HIV capsid is a fullerene cone: a variably curved, closed shell composed of approximately 250 hexamers ...

    The mature capsids of HIV and other retroviruses organize and package the viral genome and its associated enzymes for delivery into host cells. The HIV capsid is a fullerene cone: a variably curved, closed shell composed of approximately 250 hexamers and exactly 12 pentamers of the viral CA protein. We devised methods for isolating soluble, assembly-competent CA hexamers and derived four crystallographically independent models that define the structure of this capsid assembly unit at atomic resolution. A ring of six CA N-terminal domains form an apparently rigid core, surrounded by an outer ring of C-terminal domains. Mobility of the outer ring appears to be an underlying mechanism for generating the variably curved lattice in authentic capsids. Hexamer-stabilizing interfaces are highly hydrated, and this property may be key to the formation of quasi-equivalent interactions within hexamers and pentamers. The structures also clarify the molecular basis for capsid assembly inhibition and should facilitate structure-based drug design strategies.


    Organizational Affiliation

    Department of Cell Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Capsid protein p24
A
231Human immunodeficiency virus type 1 group M subtype BMutation(s): 4 
Gene Names: gag-pol
Find proteins for P12497 (Human immunodeficiency virus type 1 group M subtype B)
Go to UniProtKB:  P12497
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.232 
  • Space Group: P 6
Unit Cell:
Length (Å)Angle (°)
a = 90.995α = 90.00
b = 90.995β = 90.00
c = 56.853γ = 120.00
Software Package:
Software NamePurpose
MOLREPphasing
HKL-2000data reduction
PHENIXrefinement
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2009-04-18 
  • Released Date: 2009-06-23 
  • Deposition Author(s): Pornillos, O.

Revision History 

  • Version 1.0: 2009-06-23
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance