4UF7

Ghanaian henipavirus (Gh-M74a) attachment glycoprotein in complex with human ephrinB2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.175 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Molecular Recognition of Human Ephrinb2 Cell Surface Receptor by an Emergent African Henipavirus.

Lee, B.Pernet, O.Ahmed, A.A.Zeltina, A.Beaty, S.M.Bowden, T.A.

(2015) Proc.Natl.Acad.Sci.USA 112: E2156

  • DOI: 10.1073/pnas.1501690112

  • PubMed Abstract: 
  • The discovery of African henipaviruses (HNVs) related to pathogenic Hendra virus (HeV) and Nipah virus (NiV) from Southeast Asia and Australia presents an open-ended health risk. Cell receptor use by emerging African HNVs at the stage of host-cell en ...

    The discovery of African henipaviruses (HNVs) related to pathogenic Hendra virus (HeV) and Nipah virus (NiV) from Southeast Asia and Australia presents an open-ended health risk. Cell receptor use by emerging African HNVs at the stage of host-cell entry is a key parameter when considering the potential for spillover and infection of human populations. The attachment glycoprotein from a Ghanaian bat isolate (GhV-G) exhibits <30% sequence identity with Asiatic NiV-G/HeV-G. Here, through functional and structural analysis of GhV-G, we show how this African HNV targets the same human cell-surface receptor (ephrinB2) as the Asiatic HNVs. We first characterized this virus-receptor interaction crystallographically. Compared with extant HNV-G-ephrinB2 structures, there was significant structural variation in the six-bladed β-propeller scaffold of the GhV-G receptor-binding domain, but not the Greek key fold of the bound ephrinB2. Analysis revealed a surprisingly conserved mode of ephrinB2 interaction that reflects an ongoing evolutionary constraint among geographically distal and phylogenetically divergent HNVs to maintain the functionality of ephrinB2 recognition during virus-host entry. Interestingly, unlike NiV-G/HeV-G, we could not detect binding of GhV-G to ephrinB3. Comparative structure-function analysis further revealed several distinguishing features of HNV-G function: a secondary ephrinB2 interaction site that contributes to more efficient ephrinB2-mediated entry in NiV-G relative to GhV-G and cognate residues at the very C terminus of GhV-G (absent in Asiatic HNV-Gs) that are vital for efficient receptor-induced fusion, but not receptor binding per se. These data provide molecular-level details for evaluating the likelihood of African HNVs to spill over into human populations.


    Organizational Affiliation

    Division of Infectious Disease, Boston Children's Hospital, Boston, MA 02115; and.,Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029; thomas.bowden@strubi.ox.ac.uk benhur.lee@mssm.edu.,Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, United Kingdom.,Department of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095;,Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029;,Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, United Kingdom thomas.bowden@strubi.ox.ac.uk benhur.lee@mssm.edu.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GLYCOPROTEIN
A, B
454Bat Paramyxovirus Eid_hel/GH-M74a/GHA/2009Mutation(s): 0 
Gene Names: G
Find proteins for I0E093 (Bat Paramyxovirus Eid_hel/GH-M74a/GHA/2009)
Go to UniProtKB:  I0E093
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
EPHRIN-B2
C, E
153Homo sapiensMutation(s): 0 
Gene Names: EFNB2 (EPLG5, HTKL, LERK5)
Find proteins for P52799 (Homo sapiens)
Go to Gene View: EFNB2
Go to UniProtKB:  P52799
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B, C
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
ACT
Query on ACT

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Download CCD File 
A, B, E
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
CL
Query on CL

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Download CCD File 
A, B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
NAG
Query on NAG

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Download CCD File 
A, B, C, E
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.175 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 127.220α = 90.00
b = 152.530β = 90.00
c = 163.300γ = 90.00
Software Package:
Software NamePurpose
xia2data reduction
PHASERphasing
xia2data scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-04-01
    Type: Initial release
  • Version 1.1: 2015-04-15
    Type: Database references
  • Version 1.2: 2015-05-13
    Type: Database references
  • Version 1.3: 2018-02-28
    Type: Source and taxonomy