| InterPro term | Type | Description | Source |
|---|
| IPR000722 | Domain | RNA polymerase, alpha subunit | Interproscan |
| IPR006592 | Domain | RNA polymerase, N-terminal | Interproscan |
| IPR007066 | Domain | RNA polymerase Rpb1, domain 3 | Interproscan |
| IPR007080 | Domain | RNA polymerase Rpb1, domain 1 | Interproscan |
| IPR007081 | Domain | RNA polymerase Rpb1, domain 5 | Interproscan |
| IPR007083 | Domain | RNA polymerase Rpb1, domain 4 | Interproscan |
| IPR007120 | Domain | DNA-directed RNA polymerase, subunit 2, hybrid-binding domain | Interproscan |
| IPR007121 | Conserved_site | RNA polymerase, beta subunit, conserved site | Interproscan |
| IPR007641 | Domain | RNA polymerase Rpb2, domain 7 | Interproscan |
| IPR007642 | Domain | RNA polymerase Rpb2, domain 2 | Interproscan |
| IPR007644 | Domain | RNA polymerase, beta subunit, protrusion | Interproscan |
| IPR010243 | Family | DNA-directed RNA polymerase beta subunit, bacterial-type | Interproscan |
| IPR012754 | Family | DNA-directed RNA polymerase, subunit beta-prime, bacterial type | Interproscan |
| IPR014724 | Homologous_superfamily | RNA polymerase Rpb2, OB-fold | Interproscan |
| IPR015712 | Family | DNA-directed RNA polymerase, subunit 2 | Interproscan |
| IPR019462 | Domain | DNA-directed RNA polymerase, beta subunit, external 1 domain | Interproscan |
| IPR037033 | Homologous_superfamily | DNA-directed RNA polymerase, subunit 2, hybrid-binding domain superfamily | Interproscan |
| IPR038120 | Homologous_superfamily | RNA polymerase Rpb1, funnel domain superfamily | Interproscan |
| IPR042102 | Homologous_superfamily | RNA polymerase Rpb1, domain 3 superfamily | Interproscan |
| IPR042107 | Homologous_superfamily | DNA-directed RNA polymerase, beta subunit, external 1 domain superfamily | Interproscan |
| IPR044893 | Homologous_superfamily | RNA polymerase Rpb1, clamp domain superfamily | Interproscan |
| IPR045867 | Family | DNA-directed RNA polymerase, subunit beta-prime | Interproscan |