5MCX

The structure of the mature HIV-1 CA hexamer in intact virus particles


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.80 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: 10.1126/science.aah4972
  • Structures With Same Primary Citation

  • 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 ba ...

    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

    Molecular Medicine Partnership Unit, European Molecular Biology Laboratory-Universitätsklinikum Heidelberg, Heidelberg, Germany.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Capsid protein p24A, B, C, D, E, F, G, I, J, K, L, N, O, P, Q, R, S, U, V, W, Y, Z, b, c221Human immunodeficiency virus 1Mutation(s): 0 
Gene Names: gag
Find proteins for B6DRA0 (Human immunodeficiency virus 1)
Explore B6DRA0 
Go to UniProtKB:  B6DRA0
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SUBTOMOGRAM AVERAGING 

Structure Validation

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Entry History & Funding Information

Deposition Data


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

Revision History 

  • 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