Notes on Genus: Iotatorquevirus
Type member: Torque teno sus virus 1
This is one of the genera in the family Anelloviridae
and contains viruses of pigs with a genome of 2.9 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 2.9 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: 75 kDa, Coat protein
- ORF2: 8 kDa, Replication protein (a protein of about 25 kDa may also be generated by splicing of an intron)