4JM2

Crystal Structure of PGT 135 Fab in Complex with gp120 Core Protein from HIV-1 Strain JR-FL Bound to CD4 and 17b Fab

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.238 
  • R-Value Observed: 0.241 

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Literature

Supersite of immune vulnerability on the glycosylated face of HIV-1 envelope glycoprotein gp120.

Kong, L., Lee, J.H., Doores, K.J., Murin, C.D., Julien, J.P., McBride, R., Liu, Y., Marozsan, A., Cupo, A., Klasse, P.J., Hoffenberg, S., Caulfield, M., King, C.R., Hua, Y., Le, K.M., Khayat, R., Deller, M.C., Clayton, T., Tien, H., Feizi, T., Sanders, R.W., Paulson, J.C., Moore, J.P., Stanfield, R.L., Burton, D.R., Ward, A.B., Wilson, I.A.

(2013) Nat Struct Mol Biol 20: 796-803

  • DOI: 10.1038/nsmb.2594
  • Primary Citation of Related Structures:  
    4JM2, 4JM4

  • PubMed Abstract: 

    • A substantial proportion of the broadly neutralizing antibodies (bnAbs) identified in certain HIV-infected donors recognize glycan-dependent epitopes on HIV-1 gp120. Here we elucidate how the bnAb PGT 135 binds its Asn332 glycan-dependent epitope from it ...

    A substantial proportion of the broadly neutralizing antibodies (bnAbs) identified in certain HIV-infected donors recognize glycan-dependent epitopes on HIV-1 gp120. Here we elucidate how the bnAb PGT 135 binds its Asn332 glycan-dependent epitope from its 3.1-Å crystal structure with gp120, CD4 and Fab 17b. PGT 135 interacts with glycans at Asn332, Asn392 and Asn386, using long CDR loops H1 and H3 to penetrate the glycan shield and access the gp120 protein surface. EM reveals that PGT 135 can accommodate the conformational and chemical diversity of gp120 glycans by altering its angle of engagement. Combined structural studies of PGT 135, PGT 128 and 2G12 show that this Asn332-dependent antigenic region is highly accessible and much more extensive than initially appreciated, which allows for multiple binding modes and varied angles of approach; thereby it represents a supersite of vulnerability for antibody neutralization.

    Organizational Affiliation: 

    Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PGT 135 Heavy chain A236Homo sapiensMutation(s): 0 
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PGT 135 Light chain B214Homo sapiensMutation(s): 0 
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
17b Light chain C214Homo sapiensMutation(s): 0 
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
17b Heavy chain D229Homo sapiensMutation(s): 0 
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
gp120 E321Human immunodeficiency virus 1Mutation(s): 0 
Gene Names: env
Find proteins for Q75760 (Human immunodeficiency virus 1)
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Go to UniProtKB:  Q75760
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
T-cell surface glycoprotein CD4 F185Homo 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
GTEx:  ENSG00000010610
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Oligosaccharides

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Entity ID: 7
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
G
8 N-Glycosylation Oligosaccharides Interaction
Entity ID: 8
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
H
10 N-Glycosylation Oligosaccharides Interaction
Entity ID: 9
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
I
3 N-Glycosylation Oligosaccharides Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.238 
  • R-Value Observed: 0.241 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 218.409α = 90
b = 92.146β = 104.75
c = 88.187γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

  • Deposited Date: 2013-03-13 
  • Released Date: 2013-05-29 
    • Deposition Author(s): Kong, L., Wilson, I.A.

Revision History 

  • Version 1.0: 2013-05-29
    Type: Initial release
  • Version 1.1: 2013-06-12
    Changes: Database references
  • Version 1.2: 2013-07-17
    Changes: Database references
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Structure summary