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. 2018 Mar;99(3):288-289.
doi: 10.1099/jgv.0.001023. Epub 2018 Feb 8.

ICTV Virus Taxonomy Profile: Ampullaviridae

David Prangishvili  1 , Mart Krupovic  1 , Ictv Report Consortium
Affiliations

ICTV Virus Taxonomy Profile: Ampullaviridae

David Prangishvili et al. J Gen Virol. 2018 Mar.

Abstract

The family Ampullaviridae includes viruses with linear dsDNA genomes that replicate in hyperthermophilic archaea from the genus Acidianus. The virions have a unique champagne bottle-shaped morphology and consist of a nucleoprotein filament condensed into a cone-shaped core, which is encased by an envelope, with the base of the 'bottle' decorated with a ring of 20 filaments. Genome replication is presumably carried out by the virus-encoded protein-primed family B DNA polymerase. The bottle-shaped morphology is unprecedented among viruses of bacteria and eukaryotes and represents a group of archaea-specific virion morphotypes. This is a summary of the International Committee on Taxonomy of Viruses (ICTV) Report on the taxonomy of the Ampullaviridae, which is available at www.ictv.global/report/ampullaviridae.

Keywords: Acidianus bottle-shaped virus; Ampullaviridae; ICTV Report; Taxonomy.

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Conflict of interest statement

The authors declare that there are no conflicts of interest.

Figures

Fig. 1.
Fig. 1.
Negative-contrast electron micrographs of virions of an isolate of Acidianus bottle-shaped virus. The scale bar represents 100 nm. (Modified with permission from [1]).
Fig. 2.
Fig. 2.
Genome organization of Acidianus bottle-shaped virus, showing the location, size and direction of putative genes. The black square indicates the position of a putative non-coding RNA gene. Functionally annotated genes are highlighted with different colours. Numbers below the genome diagram are ORF identifiers. Abbreviations: DNAP, DNA polymerase; Cas4-like, Cas4-like nuclease; TK, thymidylate kinase; RHH, ribbon–helix–helix motif; GTase, glycosyltransferase; wHTH, winged helix–turn–helix motif.
See this image and copyright information in PMC

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