Notes on Family: Totiviridae

icosahedra

Contents

Members of this Family
General Description
Morphology
Genome
Genera in the Family
All Known Sequences
Curated Sequences

General Description

This family includes all the viruses of fungi and protozoa that have virions and a single component double-stranded RNA genome. Viruses of fungi with dsRNA genomes that are not encapsidated in virions are classified in the family Hypoviridae, and those with more than one genome segment are in the family Partitiviridae.

Morphology

Virions isometric (30 - 40 nm in diameter).

Genome

Monopartite, linear, double stranded RNA of 4.6-7.0 kb There are two large, usually overlapping, reading frames encoding the coat protein (gag) and an RNA-dependent RNA polymerase (pol). Some members may have a smaller, 5'-proximal, ORF.

Genera in the Family