Resources: Anelloviridae

Figure 3 Anelloviridae

Full ORF1 alignment (FASTA format)

Trimmed ORF1 alignment (FASTA format) as used for tree

Treefile (Newick format)

References: Anelloviridae

Boisvert, N., Thurmond, S., Elenberger, C., Jeraldo, P., Prince, C., Sutherland, N., Melo, J., Tsheowang, K., Dodier, C. & Nogalski, M. (2025). Anellovirus protein coded by ORF2/3 recruits host cell replication and homologous recombination machinery during replication. bioRxiv, 2025.05. 28.656439.

Citation: Anelloviridae

A summary of this ICTV Report chapter will be published as an ICTV Virus Taxonomy Profile article in the Journal of General Virology, and should be cited when referencing this online chapter as follows:

Simona Kraberger, Tanja Opriessnig, Fabrizio Maggi, Vladimir Celer, Hiroaki Okamoto, Lia van der Hoek, Philippe Biagini, Mart Krupovic and Arvind Varsani (2026): ICTV Virus Taxonomy Profile: Anelloviridae 2026, Journal of General Virology (in press)

Authors: Anelloviridae

Family: Anelloviridae

Genus: Zetatorquevirus

Distinguishing features

The only species in the genus Zetatorquevirus includes a virus with a genome of about 3.7 kb that was identified in a non-human primate (family Aotidae).

Demarcation criteria for taxa within the genus

Different species in the genus have orf1 genes with <69% pairwise identity.

Family: Anelloviridae

Genus: Zayintorquevirus

Distinguishing features

Members of the genus Zayintorquevirus have genomes of 2.2–2.6 kb and have been identified in members of the felid (Felidae) and civet (Viverridae) families.

Demarcation criteria for taxa within the genus

Different species in the genus have orf1 genes with <69% pairwise identity.

Family: Anelloviridae

Genus: Yodtorquevirus

Distinguishing features

Members of the genus Yodtorquevirus have genomes of 2.7–2.9 kb and have been identified in humans.

Demarcation criteria for taxa within the genus

Different species in the genus have orf1 genes with <69% pairwise identity.

Family: Anelloviridae

Genus: Xitorquevirus

Distinguishing features

Viruses in the two species included in the Xitorquevirus have genomes of 2.3–2.6 kb and were identified in a bat (family Molossidae) and an opossum (family Didelphidae).

Demarcation criteria for taxa within the genus

Different species in the genus have orf1 genes with <69% pairwise identity.

Family: Anelloviridae

Genus: Wawtorquevirus

Distinguishing features

Members of the genus Wawtorquevirus have genomes of 2.3–3.4 kb and have been identified in rodents from the families Muridae and Cricetidae, and in a mosquito, this possibly being blood meal-derived.

Demarcation criteria for taxa within the genus

Different species in the genus have orf1 genes with <69% pairwise identity.

Family: Anelloviridae

Genus: Upsilontorquevirus

Distinguishing features

Members of the genus Upsilontorquevirus have genomes of 1.7–2 kb and have been identified in racoons (family Procyonidae), a bear (family Ursidae) and a civet (family Viverridae).

Demarcation criteria for taxa within the genus

Different species in the genus have orf1 genes with <69% pairwise identity.