2NXY

HIV-1 gp120 Envelope Glycoprotein(S334A) Complexed with CD4 and Antibody 17b


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.183 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Structural definition of a conserved neutralization epitope on HIV-1 gp120.

Zhou, T.Xu, L.Dey, B.Hessell, A.J.Van Ryk, D.Xiang, S.H.Yang, X.Zhang, M.Y.Zwick, M.B.Arthos, J.Burton, D.R.Dimitrov, D.S.Sodroski, J.Wyatt, R.Nabel, G.J.Kwong, P.D.

(2007) Nature 445: 732-737

  • DOI: 10.1038/nature05580
  • Primary Citation of Related Structures:  
    2NY4, 2NY3, 2NY2, 2NY1, 2NY0, 2NXZ, 2NXY, 2NY7, 2NY6, 2NY5

  • PubMed Abstract: 
  • The remarkable diversity, glycosylation and conformational flexibility of the human immunodeficiency virus type 1 (HIV-1) envelope (Env), including substantial rearrangement of the gp120 glycoprotein upon binding the CD4 receptor, allow it to evade antib ...

    The remarkable diversity, glycosylation and conformational flexibility of the human immunodeficiency virus type 1 (HIV-1) envelope (Env), including substantial rearrangement of the gp120 glycoprotein upon binding the CD4 receptor, allow it to evade antibody-mediated neutralization. Despite this complexity, the HIV-1 Env must retain conserved determinants that mediate CD4 binding. To evaluate how these determinants might provide opportunities for antibody recognition, we created variants of gp120 stabilized in the CD4-bound state, assessed binding of CD4 and of receptor-binding-site antibodies, and determined the structure at 2.3 A resolution of the broadly neutralizing antibody b12 in complex with gp120. b12 binds to a conformationally invariant surface that overlaps a distinct subset of the CD4-binding site. This surface is involved in the metastable attachment of CD4, before the gp120 rearrangement required for stable engagement. A site of vulnerability, related to a functional requirement for efficient association with CD4, can therefore be targeted by antibody to neutralize HIV-1.


    Organizational Affiliation

    Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ENVELOPE GLYCOPROTEIN GP120 A317Human immunodeficiency virus 1Mutation(s): 0 
Gene Names: env
Find proteins for Q49DS8 (Human immunodeficiency virus 1)
Explore Q49DS8 
Go to UniProtKB:  Q49DS8
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
T-cell surface glycoprotein CD4 B184Homo sapiensMutation(s): 0 
Gene Names: CD4
Find proteins for P01730 (Homo sapiens)
Explore P01730 
Go to UniProtKB:  P01730
NIH Common Fund Data Resources
PHAROS:  P01730
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
ANTIBODY 17B, LIGHT CHAIN C214Homo sapiensMutation(s): 0 
Gene Names: IGK@
Find proteins for Q6P5S8 (Homo sapiens)
Explore Q6P5S8 
Go to UniProtKB:  Q6P5S8
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
ANTIBODY 17B, HEAVY CHAIN D229Homo sapiensMutation(s): 0 
Gene Names: DKFZp686K03196
Find proteins for Q6N095 (Homo sapiens)
Explore Q6N095 
Go to UniProtKB:  Q6N095
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.183 
  • Space Group: P 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71.346α = 90
b = 88.095β = 90
c = 195.981γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
HKL-2000data reduction
CNSphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-02-06
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.3: 2017-10-18
    Changes: Refinement description
  • Version 1.4: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Database references, Derived calculations, Structure summary