Notes on Genus: Zetatorquevirus


Type member: Torque teno douroucouli virus


General Description

This is one of the genera in the family Anelloviridae and contains viruses from Douroucouli (owl monkey) with a genome of 3.7 kb. The genus name is partly derived from the latin torques, for necklace which reflects the circular nature of the genome.


Virions isometric (icosahedral), not enveloped, 19-27 nm in diameter.


Monopartite circular single-stranded DNA of 3.7 kb.

Genus Genomic Organization

There are two major overlapping ORFs encoding a replication-associated protein and a (larger) coat protein. A possible additional ORF has also been identified.

Type Member Genomic Organization

There are two major overlapping ORFs: the largest (ORF1) encodes a 86 kDa coat protein and the other (ORF2) a 14 kDa replication-associated protein. There is also a putative ORF3 of 16 kDa (function unknown).