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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.

00.045.0.01. Alphanodavirus

Cite this publication as: ICTVdB Management (2006). 00.045.0.01. Alphanodavirus. 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 an invertebrate virus at the genus level.

ICTVdB Virus Code: 00.045.0.01. Virus accession number: 045001GE. Obsolete virus code: 45.0.1.; superceded accession number: 45010000.
NCBI Taxon Identifier NCBI Taxonomy ID: 143920.

Name, Synonyms and Lineage

Virus is of the family 00.045. Nodaviridae.

Virion Properties

Morphology

Virions consist of a capsid. Virus capsid is not enveloped, round with icosahedral symmetry (T=3). The isometric capsid has a diameter of 30 nm. The capsid consists of 32 capsomers.

Morphologically aberrant forms are observed.












Black bettle virus
FlockHouse virus
Pariacoto virus
Capsid structures, detailed structural and computational analysis are found in the Protein Data Bank (PDB) using VIPERdB, the VIrus Particle ExploreR 1nov.

Capsid structures, detailed structural and computational analysis are found in the Protein Data Bank (PDB) using VIPERdB, the VIrus Particle ExploreR Black beetle virus; FlockHouse virus and Pariacoto virus.

Physicochemical and Physical Properties

The molecular mass (Mr) of virions is 9 x 106. Virions have a buoyant density in CsCl of 1.3-1.37 g cm-3. The sedimentation coefficient is 134-140 S20w. Under in vitro conditions virions are stable when stored at 20°C (Nodamura virus, black beetle virus and flock house virus, not stable when stored at 20°C (Boolarra virus, stable in acid environment of pH 5; stable. Virions are not sensitive to treatment with chloroform (extraction in aqueous suspensions).

Nucleic Acid

The Mr of the genome constitutes 20% of the virion by weight. The genome is segmented and consists of two segments of to three segments of linear positive-sense, single-stranded RNA. The complete genome is 4500 nucleotides long. The RNA-1 is fully sequenced. Complete sequence is 3100 nucleotides long. RNA-2 is sequenced, but only an estimate is available, complete sequence is 1400 nucleotides long. Subgenomic RNA-3 is sequenced, complete sequence is 389 nucleotides long. The 5'-end of the genome has a methylated nucleotide cap (on each segment). The 3'-terminus has no poly (A) tract (the 3'ends cannot be chemically derivatised even after treatment with denaturing solvents suggesting they are blocked, possibly with a protein). The multipartite genome is found in one type of particle only. Each virion contains a single copy of the genome; a full length copy, or defective interfering copies (that are readily formed if the virus is not passaged at low multiplicity of infection).

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

The viral genome encodes structural proteins. Virions consist of of provirion 1 structural protein(s), or 2 structural protein(s) (in mature infective virion).

Lipids

Lipids are undetermined (, however the amino terminus of the coat protein precursor, alpha, is blocked by an unidentified entity).

Genome Organization and Replication

By itself, genomic nucleic acid is infectious (both segments are required).

Transcription: Sub-genomic RNA is present in infected cells; a transcription of RNA3 encodes protein B which may play a role in synthesis of positive-strand RNA.

Antigenicity

Antigenic specificity of the virion can be determined by neutralization tests.

Cross-reactivity is found (in double diffusions precipitin tests). Cross-reactivity between some species of the same serotype, but not with all (all four viruses represent different serotypes (neutralisation titre of each antiserum less than 0.5% in heterotypic crosses).

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Animalia.

Kingdom Animalia
Phylum Arthropoda.

Phylum Arthropoda
Subphylum Hexapoda; Class Insecta.

Taxonomic Structure of the Genus

Type species 00.045.0.01.001. Nodamura 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 Hendry DA, Johnson JE, Rueckert RR, Scotti PD.

References

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

PubMed References.

Images

Taxon images: • Flock house virus, cover picture http://bilbo.bio.purdue.edu/~baker/projects/noda/hol.html. • Flock House virus http://bilbo.bio.purdue.edu/~baker/projects/noda/fhv_ref.html.



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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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