3DS4

HIV-1 capsid C-terminal domain mutant (L211S) in complex with an inhibitor of particle assembly (CAI)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.12 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.209 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Residues in the HIV-1 Capsid Assembly Inhibitor Binding Site Are Essential for Maintaining the Assembly-competent Quaternary Structure of the Capsid Protein.

Bartonova, V.Igonet, S.Sticht, J.Glass, B.Habermann, A.Vaney, M.C.Sehr, P.Lewis, J.Rey, F.A.Krausslich, H.G.

(2008) J Biol Chem 283: 32024-32033

  • DOI: 10.1074/jbc.M804230200
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Morphogenesis of infectious HIV-1 involves budding of immature virions followed by proteolytic disassembly of the Gag protein shell and subsequent assembly of processed capsid proteins (CA) into the mature HIV-1 core. The dimeric interface between C- ...

    Morphogenesis of infectious HIV-1 involves budding of immature virions followed by proteolytic disassembly of the Gag protein shell and subsequent assembly of processed capsid proteins (CA) into the mature HIV-1 core. The dimeric interface between C-terminal domains of CA (C-CA) has been shown to be important for both immature and mature assemblies. We previously reported a CA-binding peptide (CAI) that blocks both assembly steps in vitro. The three-dimensional structure of the C-CA/CAI complex revealed an allosteric effect of CAI that alters the C-CA dimer interface. Based on this structure, we now investigated the phenotypes of mutations in the binding pocket. CA variants carrying mutations Y169A, L211A, or L211S had a reduced affinity for CAI and were unable to form mature-like particles in vitro. These mutations also blocked morphological conversion to mature virions in tissue culture and abolished infectivity. X-ray crystallographic analyses of the variant C-CA domains revealed that these alterations induced the same allosteric change at the dimer interface observed in the C-CA/CAI complex. These results point to a role of key interactions between conserved amino acids in the CAI binding pocket of C-CA in maintaining the correct conformation necessary for mature core assembly.


    Related Citations: 
    • The HIV-1 capsid protein C-terminal domain in complex with a virus assembly inhibitor
      Ternois, F., Sticht, J., Duquerroy, S., Krausslich, H.-G., Rey, F.A.
      (2005) Nat Struct Mol Biol 12: 678

    Organizational Affiliation

    Department of Virology, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 324, 69120 Heidelberg, Germany.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HIV-1 CAPSID PROTEIN
A, B
86Human immunodeficiency virus type 1 (NEW YORK-5 ISOLATE)Mutation(s): 1 
Gene Names: gag
Find proteins for Q72497 (Human immunodeficiency virus 1)
Go to UniProtKB:  Q72497
  • Find similar proteins by: Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Peptide inhibitor of capsid assembly
T
12N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.12 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.209 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 31.51α = 90
b = 69.27β = 97.66
c = 41.55γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
RemDAqdata collection
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-09-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-10-25
    Changes: Refinement description