Experimental Data Snapshot

  • Resolution: 3.00 Å
  • R-Value Work: 0.355 
  • R-Value Observed: 0.355 

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This is version 1.2 of the entry. See complete history


Structure of the carboxyl-terminal dimerization domain of the HIV-1 capsid protein.

Gamble, T.R.Yoo, S.Vajdos, F.F.von Schwedler, U.K.Worthylake, D.K.Wang, H.McCutcheon, J.P.Sundquist, W.I.Hill, C.P.

(1997) Science 278: 849-853

  • DOI: https://doi.org/10.1126/science.278.5339.849
  • Primary Citation of Related Structures:  
    1A8O, 1AUM

  • PubMed Abstract: 

    The carboxyl-terminal domain, residues 146 to 231, of the human immunodeficiency virus-1 (HIV-1) capsid protein [CA(146-231)] is required for capsid dimerization and viral assembly. This domain contains a stretch of 20 residues, called the major homology region (MHR), which is conserved across retroviruses and is essential for viral assembly, maturation, and infectivity. The crystal structures of CA(146-231) and CA(151-231) reveal that the globular domain is composed of four helices and an extended amino-terminal strand. CA(146-231) dimerizes through parallel packing of helix 2 across a dyad. The MHR is distinct from the dimer interface and instead forms an intricate hydrogen-bonding network that interconnects strand 1 and helices 1 and 2. Alignment of the CA(146-231) dimer with the crystal structure of the capsid amino-terminal domain provides a model for the intact protein and extends models for assembly of the central conical core of HIV-1.

  • Organizational Affiliation

    Department of Biochemistry, University of Utah, Salt Lake City, UT 84132, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HIV CAPSID70Human immunodeficiency virus 1Mutation(s): 0 
Find proteins for P12497 (Human immunodeficiency virus type 1 group M subtype B (isolate NY5))
Explore P12497 
Go to UniProtKB:  P12497
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP12497
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 3.00 Å
  • R-Value Work: 0.355 
  • R-Value Observed: 0.355 
  • Space Group: I 41
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 60.48α = 90
b = 60.48β = 90
c = 59.69γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
X-PLORmodel building

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-01-14
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance