Notes on Genus: Isavirus

enveloped spheres or pleomorphic

Type member: Infectious salmon anemia virus

Contents

Members of this Genus
General Description
Morphology
Electron Micrograph
Genome
Genus Genomic Organization
Genome Map
Type Member Genomic Organization
Curated Sequences

General Description

The genus Isavirus B is a member of the family Orthomyxoviridae. It is named from the type (and only) member Infectious salmon anemia virus, which infects fish.

Morphology

Virions spherical or pleomorphic, enveloped, 80-120 nm in diameter, with projections 4-6 nm in diameter and 10-14 nm long.

Genome

Single-stranded negative sense RNA in 8 segments totalling about 14.5 kb. The segments do not have a genome-linked protein (VPg) at their 5'-terminus nor a 3'-polyA tail.

Genus Genomic Organization

There are 8 RNA segments. The larger genome segments each encode a single protein while the two smallest segments each encode two proteins.

Type Member Genomic Organization

There are 8 RNA segments: