5MDG

The structure of the mature HIV-1 CA hexameric lattice with curvature parameters: tilt=29, twist=0


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SUBTOMOGRAM AVERAGING 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The structure and flexibility of conical HIV-1 capsids determined within intact virions.

Mattei, S.Glass, B.Hagen, W.J.Krausslich, H.G.Briggs, J.A.

(2016) Science 354: 1434-1437

  • DOI: https://doi.org/10.1126/science.aah4972
  • Primary Citation of Related Structures:  
    5MCX, 5MCY, 5MCZ, 5MD0, 5MD1, 5MD2, 5MD3, 5MD4, 5MD5, 5MD6, 5MD7, 5MD8, 5MD9, 5MDA, 5MDB, 5MDC, 5MDD, 5MDE, 5MDF, 5MDG

  • PubMed Abstract: 

    HIV-1 contains a cone-shaped capsid encasing the viral genome. This capsid is thought to follow fullerene geometry-a curved hexameric lattice of the capsid protein, CA, closed by incorporating 12 CA pentamers. Current models for core structure are based on crystallography of hexameric and cross-linked pentameric CA, electron microscopy of tubular CA arrays, and simulations. Here, we report subnanometer-resolution cryo-electron tomography structures of hexameric and pentameric CA within intact HIV-1 particles. Whereas the hexamer structure is compatible with crystallography studies, the pentamer forms using different interfaces. Determining multiple structures revealed how CA flexes to form the variably curved core shell. We show that HIV-1 CA assembles both aberrant and perfect fullerene cones, supporting models in which conical cores assemble de novo after maturation.


  • Organizational Affiliation

    Structural and Computational Biology Unit, European Molecular Biology Laboratory, Meyerhofstrasse 1, 69117 Heidelberg, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Gag protein74Human immunodeficiency virus 1Mutation(s): 0 
UniProt
Find proteins for Q72497 (Human immunodeficiency virus 1)
Explore Q72497 
Go to UniProtKB:  Q72497
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ72497
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Gag protein147Human immunodeficiency virus 1Mutation(s): 0 
UniProt
Find proteins for Q72497 (Human immunodeficiency virus 1)
Explore Q72497 
Go to UniProtKB:  Q72497
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ72497
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SUBTOMOGRAM AVERAGING 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONAV3
RECONSTRUCTIONTOM Toolbox

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
German Research FoundationGermanyBR 3635/2-1
German Research FoundationGermanyKR 906/7-1

Revision History  (Full details and data files)

  • Version 1.0: 2016-12-28
    Type: Initial release
  • Version 1.1: 2017-08-30
    Changes: Author supporting evidence, Data collection, Experimental preparation, Refinement description