[Home] [ICTV Taxonomy - Index of Viruses] [Virus Descriptions] [Character List] [Picture Gallery]
[Tutorial] [Online Data Retrieval & Identification] [Virus Isolate Registration & Submission] [Search]
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.

00.042. Microviridae

Cite this publication as: ICTVdB Management (2006). 00.042. Microviridae. In: ICTVdB - The Universal Virus Database, version 3. 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 bacterial and spiroplasmal virus at the family level.

ICTVdB Virus Code: 00.042. Virus accession number: 00042FAM. Obsolete virus code: 42.; superceded accession number: 42000000.
NCBI Taxon Identifier NCBI Taxonomy ID: 10841.

Name, Synonyms and Lineage

Synonym(s): Isometric phages with ssDNA.

Virion Properties

Morphology

Virions consist of a capsid. Virus capsid is not enveloped, round with icosahedral symmetry. The isometric capsid has a diameter of 25-27 nm. The capsomer arrangement is clearly visible. The capsid consists of 12 capsomers. Surface projections are distinct knobs protruding from the 12 vertices.


















Electron micrograph of Microviridae by H.-W. Ackermann, Laval University, Quebec, Canada.
























3D image of virus reconstruction can be found at Department of Molecular Virology, Bock Laboratories, University of Wisconsin - Madison, Madison, USA.

Capsid structures, detailed structural and computational analysis are found in the Protein Data Bank (PDB) using VIPERdB, the VIrus Particle ExploreR Bacteriophage G4.

Physicochemical and Physical Properties

Virions have a buoyant density in CsCl of 1.3-1.4 g cm-3.

Nucleic Acid

The genome is not segmented and contains a single molecule of circular, positive-sense, single-stranded DNA. The complete genome is 4400-5400 nucleotides long.

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

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

Lipids

Lipids are not reported.

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Bacteria.

Domain Bacteria
Phylum Proteobacteria and Firmicutes.

Taxonomic Structure of the Family

00.042.0.01. Microvirus
00.042.0.02. Spiromicrovirus
00.042.0.04. Chlamydiamicrovirus
00.042.0.05. Bdellomicrovirus.

Data Sources and Contributions

The description has been compiled from data in the ICTV Report presented by Incardona NL, Maniloff J.

References

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

PubMed References.

Images

Taxon images: • EM by Hans Ackermann, Laval University, Quebec.



Limit search to: Title & Body Title Document Path
Show Reverse Sort

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.


Additional access points to virus species lists, descriptions and images on the web:

Species catalogue                     iSpecies.org - a species search engine           a species search engine

Google Analytics      Google Analytics: activity view