Table 1 Genomic RNA sizes in nucleotide number for typical members of each genus.
|
Genus |
Species |
Strain |
RNA-1 |
RNA-2 |
RNA-3 |
3 term. |
DIs/sat RNAs |
|
Alfamovirus |
AMV |
425 |
3,644 |
2,593 |
2,037 |
complexa |
-/- |
|
Bromovirus |
BMV |
n.a. |
3,234 |
2,865 |
2,117 |
tRNAb |
+/- |
|
Cucumovirus |
CMV |
Fny |
3,357 |
3,050 |
2,216 |
tRNA |
+/+ |
|
Ilarvirus |
TSV |
n.a. |
3,491 |
2,926 |
2,205 |
complex |
-/- |
|
Oleavirus |
OLV-2 |
n.a. |
3,126 |
2,734 |
2,438 |
complex |
?/? |
a complex secondary structure.
b aminoacylatable, with pseudoknot folding.
n.a.: not applicable, only 1 strain reported.
Table 2 Viral proteins, sizes and functional activities
|
Protein |
Size ( 103) |
mRNA |
Function1 |
|
1a |
102.7-125.8 |
RNA-1 |
methyl transferase, helicase |
|
2a |
89.8-96.7 |
RNA-2 |
RNA dependent RNA polymerase |
|
3a |
30.5-36.5 |
RNA-3 |
cell to cell movement |
|
coat |
19.8-26.2 |
sgRNA-42 |
encapsidation, movement |
1 Functions of 1a and 2a are putative in most cases, by analogy to related viruses.
2 The sgRNA for the CP is encapsidated in all but the genus Oleavirus.
|
|