| IPR007066 | RNA polymerase Rpb1, domain 3 | Domain |
| IPR007081 | RNA polymerase Rpb1, domain 5 | Domain |
| IPR045867 | DNA-directed RNA polymerase, subunit beta-prime | Family |
| IPR007083 | RNA polymerase Rpb1, domain 4 | Domain |
| IPR000722 | RNA polymerase, alpha subunit | Domain |
| IPR044893 | RNA polymerase Rpb1, clamp domain superfamily | Homologous Superfamily |
| IPR038120 | RNA polymerase Rpb1, funnel domain superfamily | Homologous Superfamily |
| IPR006592 | RNA polymerase, N-terminal | Domain |
| IPR007080 | RNA polymerase Rpb1, domain 1 | Domain |
| IPR015712 | DNA-directed RNA polymerase, subunit 2 | Family |
| IPR037033 | DNA-directed RNA polymerase, subunit 2, hybrid-binding domain superfamily | Homologous Superfamily |
| IPR007120 | DNA-directed RNA polymerase, subunit 2, hybrid-binding domain | Domain |
| IPR007121 | RNA polymerase, beta subunit, conserved site | Conserved Site |
| IPR007645 | RNA polymerase Rpb2, domain 3 | Domain |
| IPR024390 | RNA polymerase, 132kDa subunit, poxvirus-type | Family |
| IPR007647 | RNA polymerase Rpb2, domain 5 | Domain |
| IPR014724 | RNA polymerase Rpb2, OB-fold | Homologous Superfamily |
| IPR007641 | RNA polymerase Rpb2, domain 7 | Domain |
| IPR005059 | DNA-directed RNA polymerase, 35kDa subunit, poxviral | Family |
| D [auth E] | IPR007937 | RNA polymerase, 22kDa subunit, poxviral | Family |
| E [auth F] | IPR007984 | DNA-directed RNA polymerase, 19kDa subunit, poxviral | Family |
| E [auth F] | IPR036161 | RPB6/omega subunit-like superfamily | Homologous Superfamily |
| F [auth G] | IPR004973 | DNA-directed RNA polymerase, 18kDa subunit, poxviral | Family |
| G [auth I] | IPR004974 | RNA polymerase-associated transcription specificity factor Rap94 | Family |
| H [auth J] | IPR008448 | DNA-directed RNA polymerase, 7kDa polypeptide, chordopoxviral | Family |
| J [auth S] | IPR001222 | Zinc finger, TFIIS-type | Domain |
| J [auth S] | IPR009162 | RNA polymerase, 30kDa subunit, chordopox-type | Family |
| J [auth S] | IPR024394 | RNA polymerase, 30kDa subunit, chordopox-type, N-terminal | Domain |