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 

wwPDB Validation 3D Report Full Report



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

  • 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" sickne ...

    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. qinghuaw@bcm.tmc.edu



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Influenza B hemagglutinin (HA)A344Influenza B virus (B/Hong Kong/8/1973)Mutation(s): 0 
Gene Names: HemagglutininHA
Find proteins for P03462 (Influenza B virus (strain B/Hong Kong/8/1973))
Explore P03462 
Go to UniProtKB:  P03462
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Influenza B hemagglutinin (HA)B176Influenza B virus (B/Hong Kong/8/1973)Mutation(s): 0 
Gene Names: HemagglutininHA
Find proteins for P03462 (Influenza B virus (strain B/Hong Kong/8/1973))
Explore P03462 
Go to UniProtKB:  P03462
Protein Feature View
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  • Reference Sequence
Oligosaccharides

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Entity ID: 3
MoleculeChainsChain Length2D Diagram Glycosylation
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
C, D, E, F
2 N-Glycosylation
Entity ID: 4
MoleculeChainsChain Length2D Diagram Glycosylation
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
5 N/A
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download CCD File 
A, B
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
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 

  • 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