4FZH

Structure of the Ulster Strain Newcastle Disease Virus Hemagglutinin-Neuraminidase Reveals Auto-Inhibitory Interactions Associated with Low Virulence


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5008 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.236 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structure of the ulster strain newcastle disease virus hemagglutinin-neuraminidase reveals auto-inhibitory interactions associated with low virulence.

Yuan, P.Paterson, R.G.Leser, G.P.Lamb, R.A.Jardetzky, T.S.

(2012) Plos Pathog. 8: e1002855-e1002855

  • DOI: 10.1371/journal.ppat.1002855

  • PubMed Abstract: 
  • Paramyxovirus hemagglutinin-neuraminidase (HN) plays roles in viral entry and maturation, including binding to sialic acid receptors, activation of the F protein to drive membrane fusion, and enabling virion release during virus budding. HN can there ...

    Paramyxovirus hemagglutinin-neuraminidase (HN) plays roles in viral entry and maturation, including binding to sialic acid receptors, activation of the F protein to drive membrane fusion, and enabling virion release during virus budding. HN can thereby directly influence virulence and in a subset of avirulent Newcastle disease virus (NDV) strains, such as NDV Ulster, HN must be proteolytically activated to remove a C-terminal extension not found in other NDV HN proteins. Ulster HN is 616 amino acids long and the 45 amino acid C-terminal extension present in its precursor (HN₀) form has to be cleaved to render HN biologically active. Here we show that Ulster HN contains an inter-subunit disulfide bond within the C-terminal extension at residue 596, which regulates HN activities and neuraminidase (NA) domain dimerization. We determined the crystal structure of the dimerized NA domain containing the C-terminal extension, which extends along the outside of the sialidase β-propeller domain and inserts C-terminal residues into the NA domain active site. The C-terminal extension also engages a secondary sialic acid binding site present in NDV HN proteins, which is located at the NA domain dimer interface, that most likely blocks its attachment function. These results clarify how the Ulster HN C-terminal residues lead to an auto-inhibited state of HN, the requirement for proteolytic activation of HN₀ and associated reduced virulence.


    Organizational Affiliation

    Department of Structural Biology, Stanford University School of Medicine, Stanford, California, United States of America.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Hemagglutinin-neuraminidase
A, B, C, D
536Newcastle disease virus (strain Chicken/Northern Ireland/Ulster/67)Gene Names: HN
EC: 3.2.1.18
Find proteins for P12558 (Newcastle disease virus (strain Chicken/Northern Ireland/Ulster/67))
Go to UniProtKB:  P12558
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, B, C, D
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5008 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.236 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 124.606α = 90.00
b = 124.606β = 90.00
c = 284.914γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data scaling
HKL-2000data collection
HKL-2000data reduction
PHASERphasing
CCP4phasing
PHENIXrefinement
CCP4model building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-09-05
    Type: Initial release