3U2S

Crystal Structure of PG9 Fab in Complex with V1V2 Region from HIV-1 strain ZM109

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 

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Literature

Structure of HIV-1 gp120 V1/V2 domain with broadly neutralizing antibody PG9.

McLellan, J.S., Pancera, M., Carrico, C., Gorman, J., Julien, J.P., Khayat, R., Louder, R., Pejchal, R., Sastry, M., Dai, K., O'Dell, S., Patel, N., Shahzad-Ul-Hussan, S., Yang, Y., Zhang, B., Zhou, T., Zhu, J., Boyington, J.C., Chuang, G.Y., Diwanji, D., Georgiev, I., Do Kwon, Y., Lee, D., Louder, M.K., Moquin, S., Schmidt, S.D., Yang, Z.Y., Bonsignori, M., Crump, J.A., Kapiga, S.H., Sam, N.E., Haynes, B.F., Burton, D.R., Koff, W.C., Walker, L.M., Phogat, S., Wyatt, R., Orwenyo, J., Wang, L.X., Arthos, J., Bewley, C.A., Mascola, J.R., Nabel, G.J., Schief, W.R., Ward, A.B., Wilson, I.A., Kwong, P.D.

(2011) Nature 480: 336-343

  • DOI: 10.1038/nature10696
  • Primary Citation of Related Structures:  
    3TCL, 3U1S, 3U2S, 3U36, 3U46, 3U4B, 3U4E

  • PubMed Abstract: 

    • Variable regions 1 and 2 (V1/V2) of human immunodeficiency virus-1 (HIV-1) gp120 envelope glycoprotein are critical for viral evasion of antibody neutralization, and are themselves protected by extraordinary sequence diversity and N-linked glycosylation. Human antibodies such as PG9 nonetheless engage V1/V2 and neutralize 80% of HIV-1 isolates ...

    Variable regions 1 and 2 (V1/V2) of human immunodeficiency virus-1 (HIV-1) gp120 envelope glycoprotein are critical for viral evasion of antibody neutralization, and are themselves protected by extraordinary sequence diversity and N-linked glycosylation. Human antibodies such as PG9 nonetheless engage V1/V2 and neutralize 80% of HIV-1 isolates. Here we report the structure of V1/V2 in complex with PG9. V1/V2 forms a four-stranded β-sheet domain, in which sequence diversity and glycosylation are largely segregated to strand-connecting loops. PG9 recognition involves electrostatic, sequence-independent and glycan interactions: the latter account for over half the interactive surface but are of sufficiently weak affinity to avoid autoreactivity. The structures of V1/V2-directed antibodies CH04 and PGT145 indicate that they share a common mode of glycan penetration by extended anionic loops. In addition to structurally defining V1/V2, the results thus identify a paradigm of antibody recognition for highly glycosylated antigens, which-with PG9-involves a site of vulnerability comprising just two glycans and a strand.

    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
PG9 heavy chainD [auth A], A [auth H]248Homo sapiensMutation(s): 0 
Protein Feature View
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PG9 light chainE [auth B], B [auth L]216Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Envelope glycoprotein gp120F [auth C], C [auth G]124Human immunodeficiency virus 1Mutation(s): 0 
Gene Names: env
UniProt
Find proteins for Q6TCP8 (Human immunodeficiency virus 1)
Explore Q6TCP8 
Go to UniProtKB:  Q6TCP8
Protein Feature View
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Oligosaccharides

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Entity ID: 4
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseG [auth D], H [auth E]7N-Glycosylation Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G55220VL
GlyCosmos:  G55220VL
GlyGen:  G55220VL
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
PCA
Query on PCA		A [auth H], D [auth A]L-PEPTIDE LINKINGC5 H7 N O3GLN
TYS
Query on TYS		A [auth H], D [auth A]L-PEPTIDE LINKINGC9 H11 N O6 STYR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 89.465α = 90
b = 86.565β = 92.08
c = 94.879γ = 90
Software Package:
Software NamePurpose
SERGUIdata collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-11-30
    Type: Initial release
  • Version 1.1: 2011-12-21
    Changes: Database references
  • Version 2.0: 2019-12-25
    Changes: Derived calculations, Polymer sequence
  • Version 3.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary