Notes on Genus: Lambdatorquevirus
Type member: Torque teno zalophus virus 1
This is one of the genera in the family Anelloviridae
and contains viruses infecting the Californian sea lion. 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 about 2.1 kb.
Genus Genomic Organization
There are two major overlapping ORFs encoding a replication-associated protein and a (larger) coat protein. A third ORF may be expressed separately (or perhaps with ORF1 by splicing of an intron).
Type Member Genomic Organization
There are two major overlapping ORFs: the largest (ORF1) encodes a 56 kDa coat protein and the other (ORF2) a 15 kDa replication-associated protein. There is also a putative ORF3 of 18 kDa (function unknown).