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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.

00.018.0.01.001. Cowpea mosaic virus

Cite this publication as: ICTVdB Management (2006). 00.018.0.01.001. Cowpea mosaic 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 plant virus at the species level.

ICTVdB Virus Code: 00.018.0.01.001. Virus accession number: 18001001. Obsolete virus code: 18.0.1.0.001; superceded accession number: 18010001.
NCBI Taxon Identifier NCBI Taxonomy ID: 12264.

Name, Synonyms and Lineage

Alternative name: cowpea mosaic virus, SB isolate. ICTV approved acronym: CPMV. Virus is the type species of the genus 00.018.0.01. Comovirus; family 00.018. Comoviridae.

Virion Properties

Morphology

Virions consist of a capsid. Virus capsid is not enveloped, round with icosahedral symmetry. The isometric capsid has a diameter of about 28 nm. The capsid consists of 32 capsomers (12 pentamers plus 20 trimers). Virus preparations contain more than one particle component.

Capsids all have the same appearance. Incomplete particles are common. They are devoid of nucleic acid characterized by capsids with dark centers in negative stain preparations (T component).

Nucleic Acid

The genome is segmented; bipartite, segements are distributed among 2 particle types of linear, positive-sense, single-stranded RNA. The complete genome is 9870 nucleotides long. The RNA B is fully sequenced, complete sequence is 5889 nucleotides long. Sequence has the accession number
[X00206]. RNA-M is fully sequenced, complete sequence is 3981 nucleotides long and has the accession number [X00729]. The 5'-end of the genome has a on each RNA species genome-linked protein (VPg) (covalently bound through serine). The 3'-terminus has conserved nucleotide sequences; sequence has of variable length 50-150 nucleotides in length (RNA-1), or 50-300 nucleotides in length (RNA-2, in all RNA species. The 3'-terminus has a poly (A) tract. The multipartite genome is divided among different particles, each segment encapsidated separately and the segments are distributed between 2 different types of particles. The largest particles contain each one molecule of RNA-1 (sedimenting component B). The medium sized particles contain each one molecule of RNA-2 (sedimenting component M). The smallest particles contain no nucleic acid and are found in the top (sedimenting component T) band after sedimentation.

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

The viral genome encodes structural proteins and non-structural proteins.

Lipids

Lipids are not reported.

Genome Organization and Replication

By itself, genomic nucleic acid is infectious (and is not diminished by enzymatic degradation of genome-linked polypeptides).

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Plantae.

Kingdom Plantae
Phylum Magnoliophyta (Angiosperms, Class Magnoliopsida (Dicotyledonae).

References

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

PubMed References.

VIDEdB, the plant virus database developed at the Australian National University by Adrian J. Gibbs and collaborators, contains an earlier description with the number 254 by C.P. de Jager, 1980. Revised 1983. Revised by G. Bruening.
A description of the virus is found in DPV, a database for plant viruses developed by the Association of Applied Biologists (AAB), with the number 47.

Images

Taxon images: • EM from IACR Rothamsted.



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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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