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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.

00.097.0.02. Hemivirus

Cite this publication as: ICTVdB Management (2006). 00.097.0.02. Hemivirus. 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: 00.097.0.02. Virus accession number: 097002GE. Obsolete virus code: 97.0.2.; superceded accession number: 97020000.

Name, Synonyms and Lineage

Virus is of the family 00.097. Pseudoviridae.

Virion Properties

Morphology

LRT- retrotransposons are poorly characterized and consist of a capsid. During their life cycle, virions never leave the cellular environment. Virus capsid is not enveloped, round with icosahedral symmetry (T=3 and 4). The capsid is isometric to quasi-isometric and has a diameter of 50 nm. Capsids appear roughly spherical to slightly elongated.

Nucleic Acid

The genome is not segmented and contains a single molecule of linear. The genome is -RT. The genome is positive-sense, single-stranded RNA. The complete genome is 4200-9700 nucleotides long.

Proteins

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

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

Lipids

Lipids are not reported.

Infection and Replication: Complete; infecting genome integrates into the host genome.

Transcription: The viral genome is transcribed by host cell enzymes.

The viral genome is transcribed by eukaryotic nuclear RNA polymerase II.

Translation: The genome replicates in the cytoplasm, or the nucleus. Replication involves a reverse transcription step.

Assembly and Egress: Viruses assemble in the cytoplasm, or in the nucleus.

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; Order Diptera.

Taxonomic Structure of the Genus

Type species 00.097.0.02.001. Drosophila melanogaster copia virus .

Species in the Genus

List of Species in the Genus.

References

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

Taxonomic Proposals and Changes

A taxonomic proposal has been submitted to the ICTV by the Fungal Virus Subcommittee at the meeting in San Diego, March 1998 to reclassify the position of type species. The proposal has been approved at the meeting of the Executive Committee in San Diego, 1998, the taxon has been designated as Genus.



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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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