Satellite virus: infection requires host cell to be co-infected with dsRNA virus
VIRION
Viral genome is trans-encapsidated by specific helper dsRNA viruses of order Ghabrivirales.
GENOME
Monopartite, linear, ssRNA(+) genome of 3.6 to 6.3 kb in size, encoding for 1 or 2 proteins. with or without a poly(A) tail.
GENE EXPRESSION
The virion RNA is infectious in the presence of their helper dsRNA viruses and serves as both the genome and viral messenger RNA. The genomic RNA (or genome segments) is translated into polyprotein subsequently processed by virus-encoded proteases into functional products.
ENZYMES
REPLICATION
Assumed to replicate inside the heterocapsids encoded by a dsRNA virus.