Pisoniviricetes

Pisoniviricetes is a class of positive-strand RNA viruses which infect eukaryotes.^[1][2] A characteristic of the group is a conserved 3C-like protease from the PA clan of proteases for processing the translated polyprotein.^[3][4][5] The name of the group is a portmanteau of member orders "picornavirales, sobelivirales, nidovirales" and -viricetes which is the suffix for a virus class.^[6]

Pisoniviricetes
Clockwise from top left: TEM of avian coronavirus, hepatitis A virus, Nam Dinh virus, polio virus, transmissible gastroenteritis coronavirus, calicivirus, equine torovirus, Norwalk virus. Center: Picornain 3C – a 3C-like protease characteristic of class Pisoniviricetes
Virus classification
(unranked):	Virus
Realm:	Riboviria
Kingdom:	Orthornavirae
Phylum:	Pisuviricota
Class:	Pisoniviricetes

Orders

The following orders are recognized:

• Nidovirales
• Picornavirales
• Sobelivirales