Notes on Genus: Carlavirus
Type member: Carnation latent virus
- Members of this Genus
- General Description
- Electron Micrograph
- Genus Genomic Organization
- Genome Map
- Type Member Genomic Organization
- All Known Sequences
- Curated Sequences
General DescriptionThe genus Carlavirus (carnation latent virus group) is one of the genera in the family Betaflexiviridae and contains a large number of members or tentative members. In genome organisation it particularly resembles the genus Foveavirus and members of the family Alphaflexiviridae and is distinguished from them by having 6 ORFs and a large replication protein. Many of its members are transmitted by aphids in a non-persistent manner. Most members cause relatively mild symptoms.
MorphologyVirions filamentous and slightly flexuous, not enveloped, 610-690 nm long and (10-)12-13(-15) nm in diameter. Nucleocapsids longitudinally striated (files of subunits separated by about four longitudinal furrows); symmetry helical with pitch of 3.3-3.4 nm.
Virions composed of 5-7 % nucleic acid.
GenomeMonopartite, linear, single stranded, positive sense RNA. 8.4-8.7 kb in length. The 3'- terminus has a poly(A) tract and the 5'- terminus sometimes has a methylated nucleotide cap, or a monophosphate.
Genus Genomic OrganizationThe RNA is translated from six putative open reading frames which are:
|2.||25-26 kDa||2-4. Triple gene block:|
probably involved in
|5.||32-36 kDa||Coat protein|
|6.||11-16 kDa||nucleic acid binding protein (NABP)|