Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 4-mer - A2B2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 140.06 kDa 
• Atom Count: 6148 
• Residue Count: 756 
• Unique protein chains: 2

2GJ7

Crystal Structure of a gE-gI/Fc complex

• DOI: 10.2210/pdb2GJ7/pdb

• Classification: IMMUNE SYSTEM/VIRUS/VIRAL PROTEIN
• Organism(s): Homo sapiens, Human alphaherpesvirus 1 strain KOS
• Expression System: Cricetulus griseus, Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2006-03-30 Released: 2006-05-30 
• Deposition Author(s): Sprague, E.R., Wang, C., Baker, D., Bjorkman, P.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 5.00 Å

Literature

Crystal Structure of the HSV-1 Fc Receptor Bound to Fc Reveals a Mechanism for Antibody Bipolar Bridging.

Sprague, E.R., Wang, C., Baker, D., Bjorkman, P.J.

(2006) PLoS Biol 4: 1-12

• PubMed: 16646632 
• DOI: 10.1371/journal.pbio.0040148
• Primary Citation of Related Structures:  
  2GIY, 2GJ7


• PubMed Abstract: 
  

Herpes simplex virus type-1 expresses a heterodimeric Fc receptor, gE-gI, on the surfaces of virions and infected cells that binds the Fc region of host immunoglobulin G and is implicated in the cell-to-cell spread of virus. gE-gI binds immunoglobulin G at the basic pH of the cell surface and releases it at the acidic pH of lysosomes, consistent with a role in facilitating the degradation of antiviral antibodies. Here we identify the C-terminal domain of the gE ectodomain (CgE) as the minimal Fc-binding domain and present a 1.78-angstroms CgE structure. A 5-angstroms gE-gI/Fc crystal structure, which was independently verified by a theoretical prediction method, reveals that CgE binds Fc at the C(H)2-C(H)3 interface, the binding site for several mammalian and bacterial Fc-binding proteins. The structure identifies interface histidines that may confer pH-dependent binding and regions of CgE implicated in cell-to-cell spread of virus. The ternary organization of the gE-gI/Fc complex is compatible with antibody bipolar bridging, which can interfere with the antiviral immune response.

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Organizational Affiliation: 

Division of Biology, California Institute of Technology, Pasadena, California, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Ig gamma-1 chain C region	A, B	227	Homo sapiens	Mutation(s): 0  Gene Names: IgG1 heavy chain, IGHG1
Find proteins for P01857 (Homo sapiens) Explore P01857  Go to UniProtKB:  P01857
NIH Common Fund Data Resources
PHAROS  P01857 GTEx  ENSG00000211896

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Glycoprotein E	E, F	401	Human alphaherpesvirus 1 strain KOS	Mutation(s): 0  Gene Names: gE, US8
Find proteins for P04488 (Human herpesvirus 1 (strain 17)) Explore P04488  Go to UniProtKB:  P04488

Oligosaccharides

Help

Entity ID: 3
Molecule	Chains	Chain Length	2D Diagram	Glycosylation
beta-D-galactopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose	C, D	8		N-Glycosylation

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 5.00 Å
• Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 174.726	α = 90
b = 174.726	β = 90
c = 315.997	γ = 90

Software Package:

Software Name	Purpose
PHASER	phasing
SOLVE	phasing
PDB_EXTRACT	data extraction
Blu-Ice	data collection
DENZO	data reduction
SCALEPACK	data scaling
CCP4	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-03-30 
• Released Date: 2006-05-30 
Deposition Author(s): Sprague, E.R., Wang, C., Baker, D., Bjorkman, P.J.

Revision History 

• Version 1.0: 2006-05-30
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Source and taxonomy, Version format compliance
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Structure summary