Virus Accession number 04000000. The presence of a nested set of subgenomic mRNAs with a common leader sequence, and a 3'-terminal capsid protein gene, suggests that the arteriviruses are more closely related to the coronaviruses than to the togaviruses. Only recently the virus has been reclassified into a new family Arteriviridae . Coronaviridae and Arteriviridae have been nested into a new Order Nidovirales . Virus infects vertebrates.
Description is on taxonomic level of family.
One sedimenting component in purified preparations. Sedimentation coefficient 200-230 S . Total genome length is 13000 nt. The 5' end of the genome has a cap. Cap sequence m7G5ppp5'GmpNp.