3TWC

Crystal structure of broad and potent HIV-1 neutralizing antibody PGT127 in complex with Man9


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.193 

wwPDB Validation   3D Report Full Report



Literature

A potent and broad neutralizing antibody recognizes and penetrates the HIV glycan shield.

Pejchal, R.Doores, K.J.Walker, L.M.Khayat, R.Huang, P.S.Wang, S.K.Stanfield, R.L.Julien, J.P.Ramos, A.Crispin, M.Depetris, R.Katpally, U.Marozsan, A.Cupo, A.Maloveste, S.Liu, Y.McBride, R.Ito, Y.Sanders, R.W.Ogohara, C.Paulson, J.C.Feizi, T.Scanlan, C.N.Wong, C.H.Moore, J.P.Olson, W.C.Ward, A.B.Poignard, P.Schief, W.R.Burton, D.R.Wilson, I.A.

(2011) Science 334: 1097-1103

  • DOI: 10.1126/science.1213256
  • Primary Citation of Related Structures:  
    3TV3, 3TWC, 3TYG

  • PubMed Abstract: 
  • The HIV envelope (Env) protein gp120 is protected from antibody recognition by a dense glycan shield. However, several of the recently identified PGT broadly neutralizing antibodies appear to interact directly with the HIV glycan coat. Crystal struct ...

    The HIV envelope (Env) protein gp120 is protected from antibody recognition by a dense glycan shield. However, several of the recently identified PGT broadly neutralizing antibodies appear to interact directly with the HIV glycan coat. Crystal structures of antigen-binding fragments (Fabs) PGT 127 and 128 with Man(9) at 1.65 and 1.29 angstrom resolution, respectively, and glycan binding data delineate a specific high mannose-binding site. Fab PGT 128 complexed with a fully glycosylated gp120 outer domain at 3.25 angstroms reveals that the antibody penetrates the glycan shield and recognizes two conserved glycans as well as a short β-strand segment of the gp120 V3 loop, accounting for its high binding affinity and broad specificity. Furthermore, our data suggest that the high neutralization potency of PGT 127 and 128 immunoglobulin Gs may be mediated by cross-linking Env trimers on the viral surface.


    Organizational Affiliation

    Department of Molecular Biology, Skaggs Institute for Chemical Biology and International AIDS Vaccine Initiative (IAVI) Neutralizing Antibody Center, nhe Scripps Research Institute, La Jolla, CA 92037, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PGT127 light chain, Ig lambda-2 chain C regionsL211Homo sapiensMutation(s): 0 
Gene Names: IGLC2
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PGT127 heavy chain, Ig gamma-1 chain C regionH239Homo sapiensMutation(s): 0 
Gene Names: IGHG1
Find proteins for P01857 (Homo sapiens)
Explore P01857 
Go to UniProtKB:  P01857
NIH Common Fund Data Resources
PHAROS  P01857
Protein Feature View
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 3
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)]alpha-D-mannopyranose
A
8 N/A Oligosaccharides Interaction
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AML
Query on AML

Download CCD File 
H
AMYLAMINE
C5 H13 N
DPBLXKKOBLCELK-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PCA
Query on PCA
LL-PEPTIDE LINKINGC5 H7 N O3GLN
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.193 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 103.55α = 90
b = 71.6β = 117.02
c = 78.83γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
PHASERphasing
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-10-19
    Type: Initial release
  • Version 1.1: 2011-10-26
    Changes: Database references
  • Version 1.2: 2011-12-07
    Changes: Database references
  • Version 1.3: 2017-08-02
    Changes: Refinement description, Source and taxonomy
  • Version 2.0: 2019-12-25
    Changes: Database references, 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