Genus: Betaguttavirus

Genus: Betaguttavirus

Distinguishing features

Aeropyrum pernix ovoid virus 1 (APOV1) is distinguished from Sulfolobus newzealandicus droplet-shaped virus (SNDV) on the basis of morphological details, namely the lack of filaments at one end of the virion, and a larger genomic DNA. 



See discussion under family description.

Physicochemical and physical properties

See discussion under family description. 

Nucleic acid

See discussion under family description. 


APOV1 virions have one major capsid protein of ~10.5 kDa and at least 2 minor capsid proteins (Mochizuki 2012).


See discussion under family description.

Genome organization and replication

See discussion under family description.


Aeropyrum pernix ovoid virus 1 was isolated from Aeropyrum pernix strain K1, which was discovered in a coastal solfataric vent at Kodakara-Jima Island, Japan. The virus is temperate and lysogenizes its host by integrating into the chromosome by recombining with the 3ʹ-distal region of the tRNA-Leu gene (Mochizuki et al., 2011).

Species demarcation criteria

Not applicable

Member species

SpeciesVirus name(s)Exemplar isolateExemplar accession numberExemplar RefSeq numberAvailable sequenceOther isolatesOther isolate accession numbersVirus abbreviationIsolate abbreviation
Aeropyrum pernix ovoid virus 1Aeropyrum pernix ovoid virus 1HE580237NC_028256Complete genomeApOV1

Virus names, the choice of exemplar isolates, and virus abbreviations, are not official ICTV designations.

Related, unclassified viruses

Virus name

Accession number

Virus abbreviation

Aeropyrum pernix ovoid virus 2*


Virus names and virus abbreviations are not official ICTV designations.
* described in (Mochizuki 2012)