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Virus classification Edit this classification
(unranked): Virus
Family: Guttaviridae

Guttaviridae is a family of viruses. Archaea serve as natural hosts. There are two genera in this family, containing one species each.[1][2] The name is derived from the Latin gutta, meaning 'droplet'.[3][4][5]


The family currently contains one genera and species:[2]

Genus Alphaguttavirus and species Sulfolobus newzealandicus droplet-shaped virus were removed in ICTV version 2021.[6]


Viruses in the family Guttaviridae are enveloped. The diameter is around 70–95 nm, with a length of 110–185 nm. Genomes are circular, around 20kb in length.[2][3] The virons consist of a coat, a core, a nucleocapsid, and projecting fibers at the pointed end. The surface of the virion has a beehive-like ribbed surface pattern with protrusions that are densely covered by a 'beard' of long fibers at its pointed end. The genome is extremely heavily methylated.[citation needed]

Life cycle[edit]

DNA-templated transcription is the method of transcription. Archaea serve as the natural host.[2][3]


  1. ^ Prangishvili, D; Mochizuki, T; Krupovic, M; ICTV Report Consortium (8 February 2018). "ICTV Virus Taxonomy Profile: Guttaviridae". The Journal of General Virology. 99 (3): 290–291. doi:10.1099/jgv.0.001027. PMC 5882108. PMID 29458561.
  2. ^ a b c d "ICTV Online Report Guttaviridae".
  3. ^ a b c "Viral Zone". ExPASy. Archived from the original on 17 June 2015. Retrieved 15 June 2015.
  4. ^ Mochizuki T, Sako Y, Prangishvili D (2011) Provirus induction in hyperthermophilic Archaea: Characterization of Aeropyrum pernix spindle-shaped virus 1 and Aeropyrum pernix ovoid virus 1. J Bacteriol 193(19):5412–5419
  5. ^ Arnold HP, Ziese U and Zillig W (2000). SNDV, a novel virus of the extremely thermophilic and acidophilic archaeon Sulfolobus. Virology 272:409–16.
  6. ^ "Taxon Details: alphaguttavirus #2021.004A.R.Alphaguttavirus_abolish". International Committee on Taxonomy of Viruses (ICTV). Retrieved 15 August 2023.

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