Notes on Genus: Cardoreovirus

icosahedra

Type member: Eriocheir sinensis reovirus

Contents

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

General Description

This is one of the animal virus genera in the family Reoviridae. Members have 12 segments and infect crustaceans. The electrophoretic mobility profile is different from that of other genera in the family and the limited sequence data suggest a distant phylogenetic relationship to the genus Seadornavirus. The name reflects the fact that these viruses have been isolated from crabs (latin Carcinus) and have 12 (latin dodecem) RNA segments.

Morphology

Virions isometric (icosahedral), c.80 nm in diameter.

Genome

Linear, double stranded RNA in 12 segments. Each virion contains a single copy of the entire genome.

Genus Genomic Organization

Each segment has a single ORF.

Type Member Genomic Organization

There are no complete sequence data for the type member but for Scylla serrata reovirus SZ-2007, the twelve segments are as follows:

Segment	Size (nts)	Protein	Protein Size (kDa)
1	4327	VP1 Polymerase	161.3
2	2721	VP2 Capping enzyme	100.7
3	2715	VP3	96.9
4	2460	VP4	51.0
5	2338	VP5	61.8
6	2202	VP6	67.0
7	1517	VP7	46.2
8	1303	VP8	32.7
9	1255	VP9	40.4
10	1244	VP10	35.9
11	1177	VP11	23.7
12	1155	VP12	29.7