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Descriptions are generated automatically from the ICTVdB database including links. Some descriptions are only very basic and links may point to documents that are not yet published on the Web.

03.004.0.01.002. Equine arteritis virus

Cite this publication as: ICTVdB Management (2006). 03.004.0.01.002. Equine arteritis virus. In: ICTVdB - The Universal Virus Database, version 4. Büchen-Osmond, C. (Ed), Columbia University, New York, USA

Cite this site as: ICTVdB - The Universal Virus Database, version 4. http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/

Table of Contents

Classification

This is a description of a vertebrate virus at the species level.

ICTVdB Virus Code: 03.004.0.01.002. Virus accession number: 04001002. Obsolete virus code: 03.004.0.01.001.; 04.0.1.0.001; superceded accession number: 04001001; 04010001.
NCBI Taxon Identifier NCBI Taxonomy ID: 11047.

Name, Synonyms and Lineage

ICTV approved acronym: EAV. Virus is the type of the genus 03.004.0.01. Arterivirus in the family 03.004. Arteriviridae; order 03. Nidovirales .

Virion Properties

Morphology

Virions consist of an envelope and a nucleocapsid. Virus capsid is enveloped. Virions are spherical and measure 60 nm in diameter. The envelope has small projections that cover evenly the surface. Surface projections form ring-like subunits and patterns are 10-14 nm in size. Capsid/nucleocapsid is round and exhibits icosahedral symmetry. The nucleocapsid is isometric with a diameter of 35 nm. Projections are small, evenly dispersed over the surface giving it a rough appearance. .

Incomplete particles are common. They are disintegrated particles (regularely observed in preparations that were not fixed before negative staining).

Physicochemical and Physical Properties

Virions have a buoyant density in CsCl of 1.17-1.2 g cm-3; sucrose of 1.13-1.17 g cm-3. There are 1 sedimenting component(s) found in purified preparations. The sedimentation coefficient is 200-230 S20w.

Nucleic Acid

The genome is not segmented and contains a single molecule of linear positive-sense, single-stranded RNA. The complete genome is 13000 nucleotides long. The 5'-end of the genome has a methylated nucleotide cap; cap sequence type is m7G5ppp5'GmpNp. The 3'-terminus has a poly (A) tract (that is about 50 nucleotides long). Each virion contains a longer than full length copy.

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

The viral genome encodes structural proteins and non-structural proteins. Virions consist of at least 4 structural protein(s).

Non-Structural Proteins: The virus codes for an RNA-dependent RNA polymerase. In addition to the polymerase, the virus codes for enzymes such as transcriptase and replicase.

Lipids

Lipids are present and located in the envelope. Virions are composed of 10% lipids by weight.

Genome Organization and Replication

By itself, genomic nucleic acid is infectious.

Antigenicity

Serological relationships between different members are not detectable. Cross-reactivity is not found.

Biological Properties

Natural Host

Virus infects during its life cycle a single type of vertebrate host.
Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Animalia.

Kingdom Animalia
Phylum Chordata.

Phylum Vertebrata
Subphylum Vertebrata; Class Mammalia.

Class Mammalia Order Perissodactyla;
Family Equidae: virus infects Equus caballus (horse).

Transmission and Vector Relationships

Virus is not transmitted by a vector.

References

The following generic references are cited in the most recent ICTV Report.

PubMed References.



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DELTA - DEscription Language for TAxonomy developed by Dr Mike Dallwitz, Toni Paine and Eric Zurcher, CSIRO Entomology, Canberra, Australia. ICTVdB - The Universal Virus Database, developed for the International Committee on Taxonomy of Viruses by Dr Cornelia Büchen-Osmond is written in DELTA. The virus descriptions in ICTVdB are coded by, or using data from experts in the field of virology or members ICTV. The character list is the underlying code. All virus descriptions are based on the character list and natural language translations are automatically generated and formatted for display on the Web from the descriptions in DELTA-format. The description has been generated automatically from DELTA files. DELTA - DEscription Language for TAxonomy developed by Dr Mike Dallwitz, Toni Paine and Eric Zurcher, CSIRO Entomology, Canberra, Australia.

ICTVdB - The Universal Virus Database, developed for the International Committee on Taxonomy of Viruses (ICTV) by Dr Cornelia Büchen-Osmond, is written in DELTA. The virus descriptions in ICTVdB are coded by ICTV members and experts, or by the ICTVdB Management using data provided by the experts, the literature or the latest ICTV Report. The character list is the underlying code. All virus descriptions are based on the character list and natural language translations from the encoded descriptions are automatically generated and formatted for display on the Web.

Developer of the DELTA software: M. J. Dallwitz, T. Paine and E. Zurcher

ICTVdB and DELTA related References

Comments to ICTVdB Management
Last updated on 25 April 2006 by Cornelia Büchen-Osmond
Copyright © 2002    International Committee on Taxonomy of Viruses.    All rights reserved.


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