Notes on Genus: Deltatorquevirus
Type member: Torque teno tupaia virus
This is one of the genera in the family Anelloviridae
and contains viruses of Tupaia
(tree shrew) with a small genome of 2.2 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 2.2 kb.
Genus Genomic Organization
There are two major overlapping ORFs encoding a replication-associated protein and a (larger) coat protein. Further products may also be generated by splicing of an intron.
Type Member Genomic Organization
There are two major overlapping ORFs:
- ORF1: 59 kDa, Coat protein
- ORF2: 7 kDa, Replication protein (a protein of about 24 kDa may also be generated by splicing of an intron)