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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.

02.043.0.01. "T4-like viruses"

Cite this publication as: ICTVdB Management (2006). 02.043.0.01. "T4like viruses". 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 bacterial virus at the genus level.

ICTVdB Virus Code: 02.043.0.01. Virus accession number: 043001GE. Obsolete virus code: 43.0.1.; superceded accession number: 43010000.
NCBI Taxon Identifier NCBI Taxonomy ID: 10663.

Name, Synonyms and Lineage

The taxon has a provisional name proposed to the ICTV, but is not yet accepted.

Virus is of the family 02.043. Myoviridae; order 02. Caudovirales.

Virion Properties

Morphology

Phages consist of a head and a tail and are not enveloped. Head separated from tail by a neck, tail complex, consisting of a central tube and a contractile sheath, provided with a collar, base plate, 6 short spikes and 6 long fibbers. Phage has a head with icosahedral symmetry and a tail with helical symmetry and exhibits icosahedral symmetry, or symmetry which is derived from a basic icosahedral structure by adding rows of capsomers to it (T=13). The head is isometric to prolate in shape and has a diameter of 78-111 nm, or 78-136 nm. Capsids appear hexagonal in outline. The capsid consists of 152 capsomers. The tail is a long, ridigid and thick contractile tube which is cross-banded with a length of 113 nm and a width of 16 nm. Axial canal is distinct. Basic helix is obvious. Tail has a collar, a base plate, spikes, fibers, and a sheath, which is separated from the head by a neck; sheath is composed of stacked rings; during contraction, sheath subunits of contractile tails slide over each other (and the sheath becomes shorter and thicker, sheath is 10-15 nm long when contracted; 6 fibers; fibers are long; fibers are terminal; 6 spikes; spikes are short; base plate is small; central core of phage tail helical.



































Electron micrograph of Myoviridae by Dr Maria Schnos, Department of Molecular Virology, Bock Laboratories, University of Wisconsin - Madison, Madison, USA.

Physicochemical and Physical Properties

Virions have a buoyant density in CsCl of 1.51 g cm-3.

Nucleic Acid

The Mr of the genome constitutes 48% of the virion by weight. The genome is not segmented and contains a single molecule of linear double-stranded DNA. The complete genome is 169000 nucleotides long, is sequenced and complete sequence is about 169000 nucleotides long. The genome has a guanine + cytosine content of 35 %. The genome contains unusual bases, they are 5-hydroxy-methyl cytosine (instead of thymidine). Double stranded DNA is circularly permuted. The genome has terminally redundant sequences.

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.

Taxonomic Structure of the Genus

Type species 02.043.0.01.001. Enterobacteria phage T4 .

Species in the Genus

List of Species in the Genus.

Unassigned Viruses

Data Sources and Contributions

The description has been compiled from data in the ICTV Report presented by Ackermann H-W, Dubow MS.

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.



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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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