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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.

00.009.0.02. Avibirnavirus

Cite this publication as: ICTVdB Management (2006). 00.009.0.02. Avibirnavirus. 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 genus level.

ICTVdB Virus Code: 00.009.0.02. Virus accession number: 009002GE. Obsolete virus code: 09.0.2.; superceded accession number: 09020000.
NCBI Taxon Identifier NCBI Taxonomy ID: 39751.

Name, Synonyms and Lineage

Virus is of the family 00.009. Birnaviridae.

Virion Properties

Morphology

Virions consist of a capsid. Virus capsid is not enveloped, round with icosahedral symmetry. The isometric capsid has a diameter of 60 nm. Capsids appear hexagonal in outline. The capsomer arrangement is clearly visible. The capsid consists of 132 capsomers. Surface projections are not present.

Capsids all have the same appearance.

Physicochemical and Physical Properties

Virions have a buoyant density in CsCl of 1.33 g cm-3.

Nucleic Acid

The Mr of the genome constitutes 9.7% of the virion by weight. The genome is segmented and consists of two segments of linear, double -stranded RNA. Minor species of non-genomic nucleic acid are also found in virions. The complete genome is 6070-6090 nucleotides long. The RNA-A is sequenced and complete sequence is about 3100-3200 nucleotides long. RNA-B is sequenced, but only an estimate is available, complete sequence is 2750-2850 nucleotides long. The genome has a guanine + cytosine content of 53-54 %. The 5'-end of the genome has a on both segments genome-linked protein (VPg) (of 94 kD). The 3'-terminus has no poly (A) tract. The multipartite genome is found in one type of particle only.

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

The viral genome encodes structural proteins.

Lipids

Lipids are absent.

Transcription: Sub-genomic RNA is present in infected cells. The mRNA is a transcription of RNA-A and RNA-B.

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 Aves.

Host Classification Virus infects Order Galliformes; Family Phasianidae; Genus Gallus; Species gallus.

Taxonomic Structure of the Genus

Type species 00.009.0.02.001. Infectious bursal disease virus .

Species in the Genus

List of Species in the Genus.

Data Sources and Contributions

The description has been compiled from data in the ICTV Report presented by Dobos P, Berthiaume L, Leong JA, Kibenge FSB, Muller H, Nicholson BL.

References

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

PubMed References.

Taxonomic Proposals and Changes

Isolates from fowl, turkeys and ducks included.

Images

Taxon images: • EM from Stewart McNulty, Queens University, Belfast.



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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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