Notes on Genus: Ferlavirus
enveloped spheres
Type member: Fer-de-Lance paramyxovirus
Contents
General Description
The genus
Ferlavirus is one of nine genera in the family
Paramyxoviridae and contains contains viruses that infect reptiles. The name is derived from the type species,
Fer-de-
Lance paramyxovirus.
Morphology
Virions pleomorphic but usually spherical, enveloped, 150 nm in diameter or larger with spike-like projections.
Genome
Monopartite single-stranded negative sense RNA of about 15 kb. There is no genome-linked protein (VPg) at the 5'-terminus nor a 3'-polyA tail.
Genus Genomic Organization
There are 8 transcriptional elements (mRNA species). There is no C protein and the phosphprotein P is produced from an edited transcript.
Type Member Genomic Organization
There are 8 transcriptional elements (mRNA species). Their major ORFs are listed here in their order on the template strand - i.e. from 3' to 5' with respect to the virion strand:
| 1 | N | 51 kDa | Coat protein (nucleocapsid) |
| 2 | X | 19 kDa | Unkown ORF |
| 3 | P | 47 kDa | Phosphoprotein produced by RNA editing |
| 4 | V | 25 kDa | Non-structural protein from same mRNA transcript as P but in a different reading frame |
| 5 | M | 38 kDa | Matrix protein |
| 6 | F | 58 kDa | Fusion protein: glycosylated envelope protein |
| 7 | HN | 62 kDa | Hemagglutinin-neuraminidase attachment protein |
| 8 | L | 247 kDa | Polymerase |