1C8G

FELINE PANLEUKOPENIA VIRUS EMPTY CAPSID STRUCTURE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Host range and variability of calcium binding by surface loops in the capsids of canine and feline parvoviruses.

Simpson, A.A.Chandrasekar, V.Hebert, B.Sullivan, G.M.Rossmann, M.G.Parrish, C.R.

(2000) J.Mol.Biol. 300: 597-610

  • DOI: 10.1006/jmbi.2000.3868
  • Primary Citation of Related Structures:  1C8D, 1C8E, 1C8F, 1C8H

  • PubMed Abstract: 
  • Canine parvovirus (CPV) emerged in 1978 as a host range variant of feline panleukopenia virus (FPV). This change of host was mediated by the mutation of five residues on the surface of the capsid. CPV and FPV enter cells by endocytosis and can be tak ...

    Canine parvovirus (CPV) emerged in 1978 as a host range variant of feline panleukopenia virus (FPV). This change of host was mediated by the mutation of five residues on the surface of the capsid. CPV and FPV enter cells by endocytosis and can be taken up by many non-permissive cell lines, showing that their host range and tissue specificity are largely determined by events occurring after cell entry. We have determined the structures of a variety of strains of CPV and FPV at various pH values and in the presence or absence of Ca(2+). The largest structural difference was found to occur in a flexible surface loop, consisting of residues 359 to 375 of the capsid protein. This loop binds a divalent calcium ion in FPV and is adjacent to a double Ca(2+)-binding site, both in CPV and FPV. Residues within the loop and those associated with the double Ca(2+)-binding site were found to be essential for virus infectivity. The residues involved in the double Ca(2+)-binding site are conserved only in FPV and CPV. Our results show that the loop conformation and the associated Ca(2+)-binding are influenced by the Ca(2+) concentration, as well as pH. These changes are correlated with the ability of the virus to hemagglutinate erythrocytes. The co-localization of hemagglutinating activity and host range determinants on the virus surface implies that these properties may be functionally linked. We speculate that the flexible loop and surrounding regions are involved in binding an as yet unidentified host molecule and that this interaction influences host range.


    Related Citations: 
    • The Three-Dimensional Structure of Canine Parvovirus and its Functional Implications
      Tsao, J.,Chapman, M.S.,Agbandje, M.,Keller, W.,Smith, K.,Wu, H.,Luo, M.,Smith, T.J.,Rossmann, M.G.,Compans, R.W.,Parrish, C.R.
      (1991) Science 251: 1456
    • Structural Refinement of the DNA-Containing Capsid of Canine Parvovirus using RSRef, a Resolution-Dependent Stereochemically Restrained Real-Space Refinement Method
      Chapman, M.S.,Rossmann, M.G.
      (1996) Acta Crystallogr.,Sect.D 52: 129
    • Structural Analysis of a Mutation in Canine Parvovirus which Controls Antigenicity and Host Range
      Llamas-Saiz, A.L.,Agbandje-McKenna, M.,Parker, J.S.,Wahid, A.T.,Parrish, C.R.,Rossmann, M.G.
      (1996) Virology 225: 65
    • Structure Determination of Feline Panleukopenia Virus Empty Particles
      Agbandje, M.,McKenna, R.,Rossmann, M.G.,Strassheim, M.L.,Parrish, C.R.
      (1993) Protein Sci. 16: 155


    Organizational Affiliation

    Department of Biological Sciences, Purdue University, West Lafayette, IN, 47907-1392, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FELINE PANLEUKOPENIA VIRUS CAPSID
A
548Feline panleukopenia virus (strain 193)N/A
Find proteins for P24840 (Feline panleukopenia virus (strain 193))
Go to UniProtKB:  P24840
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 266.170α = 90.00
b = 250.120β = 94.11
c = 379.100γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
GLRFphasing
TRANSFmodel building
DENZOdata reduction
ENVELOPEmodel building
ENVELOPEphasing
TRANSFphasing
SnBphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-08-09
    Type: Initial release
  • Version 1.1: 2008-04-26
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2011-11-30
    Type: Advisory
  • Version 1.4: 2017-10-04
    Type: Refinement description