Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Hetero 6-mer - A3B3 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 61.04 kDa 
• Atom Count: 4190 
• Residue Count: 494 
• Unique protein chains: 2

4UO8

Structure of the A_Canine_Colorado_17864_06 H3 haemagglutinin in complex with 6SO4-3SLN

• DOI: 10.2210/pdb4UO8/pdb

• Classification: VIRAL PROTEIN
• Organism(s): Influenza A virus (A/canine/Colorado/17864/2006(H3N8))
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2014-05-31 Released: 2014-07-23 
• Deposition Author(s): Vachieri, S.G., Collins, P.J., Haire, L.F., Ogrodowicz, R.W., Martin, S.R., Walker, P.A., Xiong, X., Gamblin, S.J., Skehel, J.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.251 
• R-Value Work: 0.207 
• R-Value Observed: 0.209 

Literature

Recent Evolution of Equine Influenza and the Origin of Canine Influenza.

Collins, P.J., Vachieri, S.G., Haire, L.F., Ogrodowicz, R.W., Martin, S.R., Walker, P.A., Xiong, X., Gamblin, S.J., Skehel, J.J.

(2014) Proc Natl Acad Sci U S A 111: 11175

• PubMed: 25024224 
• DOI: 10.1073/pnas.1406606111
• Primary Citation of Related Structures:  
  4UOA, 4UO6, 4UO7, 4UNW, 4UO8, 4UNX, 4UO9, 4UNY, 4UNZ, 4UO0


• PubMed Abstract: 
  

In 2004 an hemagglutinin 3 neuraminidase 8 (H3N8) equine influenza virus was transmitted from horses to dogs in Florida and subsequently spread throughout the United States and to Europe. To understand the molecular basis of changes in the antigenicity of H3 hemagglutinins (HAs) that have occurred during virus evolution in horses, and to investigate the role of HA in the equine to canine cross-species transfer, we used X-ray crystallography to determine the structures of the HAs from two antigenically distinct equine viruses and from a canine virus. Structurally all three are very similar with the majority of amino acid sequence differences between the two equine HAs located on the virus membrane-distal molecular surface. HAs of canine viruses are distinct in containing a Trp-222 → Leu substitution in the receptor binding site that influences specificity for receptor analogs. In the fusion subdomain of canine and recent equine virus HAs a unique difference is observed by comparison with all other HAs examined to date. Analyses of site-specific mutant HAs indicate that a single amino acid substitution, Thr-30 → Ser, influences interactions between N-terminal and C-terminal regions of the subdomain that are important in the structural changes required for membrane fusion activity. Both structural modifications may have facilitated the transmission of H3N8 influenza from horses to dogs.

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Organizational Affiliation: 

Divisions of Virology, [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HA1	A	328	Influenza A virus (A/canine/Colorado/17864/2006(H3N8))	Mutation(s): 0  Gene Names: HA
Find proteins for E0UVR5 (Influenza A virus) Explore E0UVR5  Go to UniProtKB:  E0UVR5

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
HA2	B	175	Influenza A virus (A/canine/Colorado/17864/2006(H3N8))	Mutation(s): 0  Gene Names: HA
Find proteins for E0UVR5 (Influenza A virus) Explore E0UVR5  Go to UniProtKB:  E0UVR5

Oligosaccharides

Help

Entity ID: 3
Molecule	Chains	Chain Length	2D Diagram	Glycosylation
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	C	2		N-Glycosylation

Entity ID: 4
Molecule	Chains	Chain Length	2D Diagram	Glycosylation
alpha-D-mannopyranose-(1-3)-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-glucopyranose	D, E	5		N-Glycosylation

Entity ID: 5
Molecule	Chains	Chain Length	2D Diagram	Glycosylation
beta-D-mannopyranose-(1-2)-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-glucopyranose	F	5		N-Glycosylation

Entity ID: 6
Molecule	Chains	Chain Length	2D Diagram	Glycosylation
N-acetyl-alpha-neuraminic acid-(2-3)-beta-D-galactopyranose-(1-4)-2-acetamido-2-deoxy-6-O-sulfo-beta-D-glucopyranose	G	3		N/A

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	A	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
SO4	A, B	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.251 
• R-Value Work: 0.207 
• R-Value Observed: 0.209 
• Space Group: P 6₃ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 97.289	α = 90
b = 97.289	β = 90
c = 348.267	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2014-05-31 
• Released Date: 2014-07-23 
Deposition Author(s): Vachieri, S.G., Collins, P.J., Haire, L.F., Ogrodowicz, R.W., Martin, S.R., Walker, P.A., Xiong, X., Gamblin, S.J., Skehel, J.J.

Revision History 

• Version 1.0: 2014-07-23
  Type: Initial release
  
• Version 1.1: 2014-08-13
  Changes: Database references
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Derived calculations, Other, Structure summary