Subfamily: Equarterivirinae
Family: Arteriviridae
Subfamily: Equarterivirinae
Distinguishing features
Members of this subfamily form a clade upon phylogenetic analysis (Figure 3. Arteriviridae). PLP1a is enzymatically inactive and, as a result, only a single nsp1 is produced in cells infected with equine arteritis virus. EAV also does not have nsp2TF or nsp2N ORFs produced by ribosomal frameshifting.
