1WDG

crystal structure of MHV spike protein fusion core


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.06 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.260 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Structural Basis for Coronavirus-mediated Membrane Fusion: CRYSTAL STRUCTURE OF MOUSE HEPATITIS VIRUS SPIKE PROTEIN FUSION CORE

Xu, Y.Liu, Y.Lou, Z.Qin, L.Li, X.Bai, Z.Pang, H.Tien, P.Gao, G.F.Rao, Z.

(2004) J.Biol.Chem. 279: 30514-30522

  • DOI: 10.1074/jbc.M403760200
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The surface transmembrane glycoprotein is responsible for mediating virion attachment to cell and subsequent virus-cell membrane fusion. However, the molecular mechanisms for the viral entry of coronaviruses remain poorly understood. The crystal stru ...

    The surface transmembrane glycoprotein is responsible for mediating virion attachment to cell and subsequent virus-cell membrane fusion. However, the molecular mechanisms for the viral entry of coronaviruses remain poorly understood. The crystal structure of the fusion core of mouse hepatitis virus S protein, which represents the first fusion core structure of any coronavirus, reveals a central hydrophobic coiled coil trimer surrounded by three helices in an oblique, antiparallel manner. This structure shares significant similarity with both the low pH-induced conformation of influenza hemagglutinin and fusion core of HIV gp41, indicating that the structure represents a fusion-active state formed after several conformational changes. Our results also indicate that the mechanisms for the viral fusion of coronaviruses are similar to those of influenza virus and HIV. The coiled coil structure has unique features, which are different from other viral fusion cores. Highly conserved heptad repeat 1 (HR1) and HR2 regions in coronavirus spike proteins indicate a similar three-dimensional structure among these fusion cores and common mechanisms for the viral fusion. We have proposed the binding regions of HR1 and HR2 of other coronaviruses and a structure model of their fusion core based on our mouse hepatitis virus fusion core structure and sequence alignment. Drug discovery strategies aimed at inhibiting viral entry by blocking hairpin formation may be applied to the inhibition of a number of emerging infectious diseases, including severe acute respiratory syndrome.


    Organizational Affiliation

    Laboratory of Structural Biology, Tsinghua University, Beijing 100084, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
E2 glycoprotein
A, B
94Murine coronavirus (strain A59)Mutation(s): 0 
Gene Names: S
Find proteins for P11224 (Murine coronavirus (strain A59))
Go to UniProtKB:  P11224
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.06 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.260 
  • Space Group: H 3
Unit Cell:
Length (Å)Angle (°)
a = 51.600α = 90.00
b = 51.600β = 90.00
c = 198.200γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
CNSrefinement
CNSphasing
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-06-15
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Source and taxonomy, Version format compliance
  • Version 1.3: 2017-08-16
    Type: Refinement description, Source and taxonomy
  • Version 1.4: 2017-08-23
    Type: Data collection