| IPR001591 | Influenza RNA-dependent RNA polymerase subunit PB2 | Family |
| IPR049106 | Influenza RNA polymerase PB2, N-terminal region | Domain |
| IPR049115 | Influenza RNA polymerase PB2, C-terminal domain | Domain |
| IPR049110 | Influenza RNA polymerase PB2, second domain | Domain |
| IPR049114 | Influenza RNA polymerase PB2, sixth domain | Domain |
| IPR049113 | Polymerase basic protein 2, helical domain | Domain |
| IPR049111 | Influenza RNA polymerase PB2, middle domain | Domain |
| IPR048298 | Influenza RNA polymerase PB2, CAP binding domain | Domain |
| IPR037258 | PB2, C-terminal | Homologous Superfamily |
| IPR000968 | Influenza nuclear export protein NS2 | Family |
| IPR007099 | RNA-directed RNA polymerase, negative-strand RNA virus | Domain |
| IPR001407 | Influenza RNA-dependent RNA polymerase subunit PB1 | Family |
| IPR001009 | Influenza RNA-dependent RNA polymerase subunit PA | Family |
| IPR037534 | Polymerase acidic protein | Family |
| IPR038372 | Influenza RNA-dependent RNA polymerase subunit PA, endonuclease domain | Homologous Superfamily |