4GIP

Structure of the cleavage-activated prefusion form of the parainfluenza virus 5 (PIV5) fusion protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.220 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the cleavage-activated prefusion form of the parainfluenza virus 5 fusion protein.

Welch, B.D.Liu, Y.Kors, C.A.Leser, G.P.Jardetzky, T.S.Lamb, R.A.

(2012) Proc.Natl.Acad.Sci.USA 109: 16672-16677

  • DOI: 10.1073/pnas.1213802109

  • PubMed Abstract: 
  • The paramyxovirus parainfluenza virus 5 (PIV5) enters cells by fusion of the viral envelope with the plasma membrane through the concerted action of the fusion (F) protein and the receptor binding protein hemagglutinin-neuraminidase. The F protein fo ...

    The paramyxovirus parainfluenza virus 5 (PIV5) enters cells by fusion of the viral envelope with the plasma membrane through the concerted action of the fusion (F) protein and the receptor binding protein hemagglutinin-neuraminidase. The F protein folds initially to form a trimeric metastable prefusion form that is triggered to undergo large-scale irreversible conformational changes to form the trimeric postfusion conformation. It is thought that F refolding couples the energy released with membrane fusion. The F protein is synthesized as a precursor (F0) that must be cleaved by a host protease to form a biologically active molecule, F1,F2. Cleavage of F protein is a prerequisite for fusion and virus infectivity. Cleavage creates a new N terminus on F1 that contains a hydrophobic region, known as the FP, which intercalates target membranes during F protein refolding. The crystal structure of the soluble ectodomain of the uncleaved form of PIV5 F is known; here we report the crystal structure of the cleavage-activated prefusion form of PIV5 F. The structure shows minimal movement of the residues adjacent to the protease cleavage site. Most of the hydrophobic FP residues are buried in the uncleaved F protein, and only F103 at the newly created N terminus becomes more solvent-accessible after cleavage. The conformational freedom of the charged arginine residues that compose the protease recognition site increases on cleavage of F protein.


    Organizational Affiliation

    Howard Hughes Medical Institute and Department of Molecular Biosciences, Northwestern University, Evanston, IL 60208, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Fusion glycoprotein F2
A, B, C
81Parainfluenza virus 5 (strain W3)Mutation(s): 0 
Gene Names: F
Find proteins for P04849 (Parainfluenza virus 5 (strain W3))
Go to UniProtKB:  P04849
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Fusion glycoprotein F1
D, E, F
409Parainfluenza virus 5 (strain W3)Mutation(s): 0 
Gene Names: F
Find proteins for P04849 (Parainfluenza virus 5 (strain W3))
Go to UniProtKB:  P04849
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, E, F
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.220 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 250.930α = 90.00
b = 140.520β = 99.84
c = 84.600γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
PHASERphasing
HKL-2000data collection
HKL-2000data scaling
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-09-19
    Type: Initial release
  • Version 1.1: 2012-10-31
    Type: Database references
  • Version 1.2: 2017-11-15
    Type: Advisory, Refinement description