2VIU

INFLUENZA VIRUS HEMAGGLUTININ

• PDB DOI: https://doi.org/10.2210/pdb2VIU/pdb

• Classification: HEMAGGLUTININ
• Organism(s): Influenza A virus (A/X-31(H3N2)), unidentified influenza virus
• Mutation(s): Yes 


• Deposited: 1997-12-22 Released: 1998-04-29 
• Deposition Author(s): Bizebard, T., Fleury, D., Gigant, B., Wharton, S.A., Skehel, J.J., Knossow, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.242 
• R-Value Work: 0.210 
• R-Value Observed: 0.210 

Literature

Antigen distortion allows influenza virus to escape neutralization.

Fleury, D., Wharton, S.A., Skehel, J.J., Knossow, M., Bizebard, T.

(1998) Nat Struct Biol 5: 119-123

• PubMed: 9461077 
• DOI: https://doi.org/10.1038/nsb0298-119
• Primary Citation of Related Structures:  
  2VIR, 2VIS, 2VIT, 2VIU


• PubMed Abstract: 
  

  The structure of the hemagglutinin (HA) of a mutant influenza virus that escapes neutralization by a monoclonal antibody shows that the mutation causes changes in HA structure which avoid an energetically less favorable conformation. However, the structure of the mutant HA.Fab complex indicates that the antibody binds selectively to mutant HA in a wild type-like distorted conformation. The association of an antibody with a less favored HA conformation represents an alternative to previously described mechanisms of escape from neutralization by antibodies.

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Organizational Affiliation: 

Laboratoire d'Enzymologie et Biochimie Structurales, CNRS, Gif-sur-Yvette, France.

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 57.98 kDa 
• Atom Count: 4,104 
• Modelled Residue Count: 495 
• Deposited Residue Count: 503 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HEMAGGLUTININ	A	328	Influenza A virus (A/X-31(H3N2))	Mutation(s): 1
UniProt
Find proteins for P03437 (Influenza A virus (strain A/Aichi/2/1968 H3N2)) Explore P03437  Go to UniProtKB:  P03437
Glycosylation
Glycosylation Sites: 3

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
HEMAGGLUTININ	B	175	unidentified influenza virus	Mutation(s): 0
UniProt
Find proteins for P03437 (Influenza A virus (strain A/Aichi/2/1968 H3N2)) Explore P03437  Go to UniProtKB:  P03437
Glycosylation
Glycosylation Sites: 1

Oligosaccharides

Help

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	C	3		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G15407YE GlyCosmos:  G15407YE GlyGen:  G15407YE

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	D [auth A], E [auth A], F [auth A], G [auth A], H [auth B]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.242 
• R-Value Work: 0.210 
• R-Value Observed: 0.210 
• Space Group: P 2₁ 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 144.4	α = 90
b = 144.4	β = 90
c = 144.4	γ = 90

Software Package:

Software Name	Purpose
HKL	data collection
X-PLOR	model building
X-PLOR	refinement
HKL	data reduction
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1998-04-29 
Deposition Author(s): Bizebard, T., Fleury, D., Gigant, B., Wharton, S.A., Skehel, J.J., Knossow, M.

Revision History  

• Version 1.0: 1998-04-29
  Type: Initial release
  
• Version 1.1: 2008-03-25
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Derived calculations, Other, Structure summary
• Version 2.1: 2021-11-03
  Changes: Database references, Structure summary
• Version 2.2: 2024-11-13
  Changes: Data collection, Structure summary