Notes on Genus: Bacillarnavirus
Type member: Rhizosolenia setigera RNA virus 01
This genus is not currently assigned to a family but is placed within the order Picornavirales
. It is named because it contains ssRNA viruses that infect Bacillariophytes (diatoms).
Virions are isometric (icosahedral) and 32 nm in diameter.
Monpartitite, single-stranded, positive sense RNA of 8.5-9.5 kb and with a polyA tail.
Genus Genomic Organization
There are two ORFs encoding non-structural and structural polyproteins respectively.
Type Member Genomic Organization
The genome of about 8,900 nucleotides is predicted to be translated into:
- Non-structural polyprotein (182.1 kDa) with (from N- to C- termini) helicase protease and polymerase domains
- Structural polyprotein (107.1 kDa) that is processed into at least three coat proteins