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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. Caudovirales

Cite this publication as: ICTVdB Management (2006). 02. Caudovirales. 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 order level.

ICTVdB Virus Code: 02. Virus accession number: 02_ORDER. Obsolete virus code: VO02.; superceded accession number: vo020000.
NCBI Taxon Identifier NCBI Taxonomy ID: 28883.

Name, Synonyms and Lineage

Synonym(s): Tailed Phages.

Virion Properties

Morphology

Phages consist of a head, a tail, spikes, and fibers. Virus capsid is not enveloped. Phage has a head with icosahedral symmetry and a tail with helical symmetry and exhibits polyhedral symmetry. The head is isometric, or prolate in shape. Capsids appear hexagonal in outline. The tail is contractile, or non-contractile; is rod-shaped, or helical, or built of stacked disks, is straight, or flexuous. Tail has a collar, or a sheath, which is separated from the head by a neck, or a base plate, or fibers, or spikes, or appendages.

Nucleic Acid

The The genome is not segmented and contains a single molecule of linear double-stranded DNA. Double stranded DNA may be circularly permuted. The genome has terminally redundant sequences. The double stranded DNA may have single-stranded gaps, has covalently-bound terminal proteins that may be linked at both ends. The end of the linear molecule can be blunt, or has comlpementary protruding 5'– or 3'– ends (cohesive or sticky ends, which can base pair to circularize the molecule). Nucleotide sequences at the 3'–terminus are complementary to similar regions on the 5' end.

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.

Taxonomic Structure of the Order

02.043. Myoviridae
02.054. Podoviridae
02.066. Siphoviridae.

Data Sources and Contributions

The description has been compiled from data in the ICTV Report presented by Hendrix, R.W. and Casjens, S.R.

References

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

PubMed References.

Images

ICTV classified Myoviridae
ICTV classified Podoviridae
ICTV classified Siphoviridae
Unclassified Myoviridae
Unclassified Podoviridae
Unclassified Siphoviridae

Taxonomic Proposals and Changes

Tailed phages are extremely variable in dimensions and physico-chemical properties. Over 3,000 descriptions have been published. Three families are distinguished by tail structure, and genus definitions are only slowly evolving. Each family includes large numbers of species.



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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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