1C8E

FELINE PANLEUKOPENIA VIRUS EMPTY CAPSID STRUCTURE

DOI: 10.2210/pdb1C8E/pdb

Classification: VIRUS
Organism(s): Feline parvovirus
Mutation(s): No

Deposited: 2000-05-05 Released: 2000-08-09
Deposition Author(s): Rossmann, M.G., Simpson, A.A.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 3.00 Å
R-Value Observed: 0.288

wwPDB Validation 3D Report Full Report

This is version 1.5 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

PubMed: 10884355 Search on PubMed
DOI: 10.1006/jmbi.2000.3868
Primary Citation of Related Structures:
1C8E, 1C8D, 1C8H, 1C8G, 1C8F

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 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:

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

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 D Biol Crystallogr 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

The 3-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

Organizational Affiliation:

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

Macromolecules

Find similar proteins by:

(by identity cutoff) | Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
FELINE PANLEUKOPENIA VIRUS CAPSID	A	548	Feline parvovirus	Mutation(s): 0
Find proteins for P24840 (Feline panleukopenia virus (strain 193)) Explore P24840 Go to UniProtKB: P24840
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Reference Sequence