2RFT

Crystal structure of influenza B virus hemagglutinin in complex with LSTa receptor analog


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.280 
  • R-Value Observed: 0.282 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 2.2 of the entry. See complete history


Literature

Structural basis for receptor specificity of influenza B virus hemagglutinin.

Wang, Q.Tian, X.Chen, X.Ma, J.

(2007) Proc Natl Acad Sci U S A 104: 16874-16879

  • DOI: https://doi.org/10.1073/pnas.0708363104
  • Primary Citation of Related Structures:  
    2RFT, 2RFU

  • PubMed Abstract: 

    Receptor-binding specificity of HA, the major surface glycoprotein of influenza virus, primarily determines the host ranges that the virus can infect. Influenza type B virus almost exclusively infects humans and contributes to the annual "flu" sickness. Here we report the structures of influenza B virus HA in complex with human and avian receptor analogs, respectively. These structures provide a structural basis for the different receptor-binding properties of influenza A and B virus HA molecules and for the ability of influenza B virus HA to distinguish human and avian receptors. The structure of influenza B virus HA with avian receptor analog also reveals how mutations in the region of residues 194 to 196, which are frequently observed in egg-adapted and naturally occurring variants, directly affect the receptor binding of the resultant virus strains. Furthermore, these structures of influenza B virus HA are compared with known structures of influenza A virus HAs, which suggests the role of the residue at 222 as a key and likely a universal determinant for the different binding modes of human receptor analogs by different HA molecules.


  • Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA. [email protected]


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Influenza B hemagglutinin (HA)344Influenza B virus (B/Hong Kong/8/1973)Mutation(s): 0 
Gene Names: Hemagglutinin
UniProt
Find proteins for P03462 (Influenza B virus (strain B/Hong Kong/8/1973))
Explore P03462 
Go to UniProtKB:  P03462
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03462
Glycosylation
Glycosylation Sites: 6
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Influenza B hemagglutinin (HA)176Influenza B virus (B/Hong Kong/8/1973)Mutation(s): 0 
Gene Names: Hemagglutinin
UniProt
Find proteins for P03462 (Influenza B virus (strain B/Hong Kong/8/1973))
Explore P03462 
Go to UniProtKB:  P03462
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03462
Glycosylation
Glycosylation Sites: 1
Sequence Annotations
Expand
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 3
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
C, D, E, F
2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Entity ID: 4
MoleculeChains Length2D Diagram Glycosylation3D Interactions
N-acetyl-alpha-neuraminic acid-(2-3)-beta-D-galactopyranose-(1-3)-2-acetamido-2-deoxy-alpha-D-glucopyranose-(1-3)-beta-D-galactopyranose-(1-4)-beta-D-glucopyranose
G
5N/A
Glycosylation Resources
GlyTouCan:  G66480HI
GlyCosmos:  G66480HI
GlyGen:  G66480HI
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.280 
  • R-Value Observed: 0.282 
  • Space Group: P 3 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 98.328α = 90
b = 98.328β = 90
c = 135.988γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-02-05
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary
  • Version 2.1: 2024-04-03
    Changes: Data collection, Database references, Refinement description, Structure summary
  • Version 2.2: 2024-10-30
    Changes: Structure summary