4CC8

Pre-fusion structure of trimeric HIV-1 envelope glycoprotein determined by cryo-electron microscopy


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

Prefusion Structure of Trimeric HIV-1 Envelope Glycoprotein Determined by Cryo-Electron Microscopy.

Bartesaghi, A.Merk, A.Borgnia, M.J.Milne, J.L.S.Subramaniam, S.

(2013) Nat Struct Mol Biol 20: 1352

  • DOI: 10.1038/nsmb.2711
  • Primary Citation of Related Structures:  
    4CC8

  • PubMed Abstract: 
  • The activation of trimeric HIV-1 envelope glycoprotein (Env) by its binding to the cell-surface receptor CD4 and co-receptors (CCR5 or CXCR4) represents the first of a series of events that lead to fusion between viral and target-cell membranes. Here, we present the cryo-EM structure, at subnanometer resolution (~6 Å at 0 ...

    The activation of trimeric HIV-1 envelope glycoprotein (Env) by its binding to the cell-surface receptor CD4 and co-receptors (CCR5 or CXCR4) represents the first of a series of events that lead to fusion between viral and target-cell membranes. Here, we present the cryo-EM structure, at subnanometer resolution (~6 Å at 0.143 FSC), of the 'closed', prefusion state of trimeric HIV-1 Env complexed to the broadly neutralizing antibody VRC03. We show that three gp41 helices at the core of the trimer serve as an anchor around which the rest of Env is reorganized upon activation to the 'open' quaternary conformation. The architecture of trimeric HIV-1 Env in the prefusion state and in the activated intermediate state resembles the corresponding states of influenza hemagglutinin trimers, thus providing direct evidence for the similarity in entry mechanisms used by HIV-1, influenza and related enveloped viruses.


    Organizational Affiliation

    Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GP41A, B, C31Human immunodeficiency virus 1Mutation(s): 0 
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
GP120D, E, G344Human immunodeficiency virus 1Mutation(s): 0 
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
MONOCLONAL ANTIBODY VRC03 FAB HEAVY CHAINF, H, I233Homo sapiensMutation(s): 0 
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
MONOCLONAL ANTIBODY VRC03 FAB LIGHT CHAINJ, K, L209Homo sapiensMutation(s): 0 
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Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-10-30
    Type: Initial release
  • Version 1.1: 2013-11-06
    Changes: Database references, Other, Source and taxonomy
  • Version 1.2: 2013-12-18
    Changes: Database references
  • Version 1.3: 2017-08-23
    Changes: Data collection
  • Version 2.0: 2018-01-10
    Changes: Atomic model, Derived calculations