| IPR008741 | Arterivirus papain-like cysteine protease alpha (PCPalpha) domain | Domain |
| IPR029323 | Equine arteritis virus, non-structural protein 1 | Domain |
| IPR043128 | Reverse transcriptase/Diguanylate cyclase domain | Homologous Superfamily |
| IPR025773 | Arterivirus papain-like cysteine protease beta (PCPbeta) domain | Domain |
| IPR044863 | Nidovirus RdRp-associated nucleotidyl transferase (NiRAN) domain | Domain |
| IPR027417 | P-loop containing nucleoside triphosphate hydrolase | Homologous Superfamily |
| IPR037227 | Endoribonuclease EndoU-like | Homologous Superfamily |
| IPR009003 | Peptidase S1, PA clan | Homologous Superfamily |
| IPR022230 | Protein of unknown function DUF3756 | Family |
| IPR008760 | Equine arteritis virus peptidase S32 | Family |
| IPR032786 | Nsp2, transmembrane domain | Domain |
| IPR038451 | Arterivirus nsp7 alpha superfamily | Homologous Superfamily |
| IPR027351 | (+) RNA virus helicase core domain | Domain |
| IPR041053 | Replicase polyprotein 1ab | Domain |
| IPR023338 | Arterivirus NSP4 peptidase domain | Domain |
| IPR008743 | Arterivirus Nsp2, peptidase C33 | Domain |
| IPR001205 | RNA-directed RNA polymerase, C-terminal domain | Domain |
| IPR027355 | Nonstructural protein 10, zinc-binding domain, arterivirus | Domain |
| IPR046440 | Arterivirus Nsp11 N-terminal/Coronavirus NSP15 middle domain | Domain |
| IPR044320 | NSP11, N-terminal, arterivirus | Domain |
| IPR043502 | DNA/RNA polymerase superfamily | Homologous Superfamily |
| IPR023183 | Serine protease, chymotrypsin-like serine protease, C-terminal | Homologous Superfamily |
| IPR043609 | NendoU domain, nidovirus | Domain |
| IPR044314 | NSP11, NendoU domain, arterivirus | Domain |
| IPR043504 | Peptidase S1, PA clan, chymotrypsin-like fold | Homologous Superfamily |
| IPR007094 | RNA-directed RNA polymerase, catalytic domain | Domain |
| IPR041361 | Nidovirus helicase, RING/Ubox like zinc-binding domain | Domain |
| IPR031932 | Arterivirus nonstructural protein 7 alpha | Family |