| IPR007066 | RNA polymerase Rpb1, domain 3 | Domain |
| IPR007081 | RNA polymerase Rpb1, domain 5 | Domain |
| IPR045867 | DNA-directed RNA polymerase, subunit beta-prime | Family |
| IPR012758 | DNA-directed RNA polymerase subunit Rpo1N | Family |
| IPR042102 | RNA polymerase Rpb1, domain 3 superfamily | Homologous Superfamily |
| 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 |
| IPR007642 | RNA polymerase Rpb2, domain 2 | Domain |
| IPR015712 | DNA-directed RNA polymerase, subunit 2 | Family |
| IPR037033 | DNA-directed RNA polymerase, subunit 2, hybrid-binding domain superfamily | Homologous Superfamily |
| IPR037034 | RNA polymerase Rpb2, domain 2 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 |
| IPR007646 | RNA polymerase Rpb2, domain 4 | Domain |
| IPR007647 | RNA polymerase Rpb2, domain 5 | Domain |
| IPR014724 | RNA polymerase Rpb2, OB-fold | Homologous Superfamily |
| IPR007644 | RNA polymerase, beta subunit, protrusion | Domain |
| IPR007641 | RNA polymerase Rpb2, domain 7 | Domain |
| IPR019969 | DNA-directed RNA polymerase subunit Rpo2 | Family |
| IPR011262 | DNA-directed RNA polymerase, insert domain | Domain |
| IPR011263 | DNA-directed RNA polymerase, RpoA/D/Rpb3-type | Domain |
| IPR036643 | DNA-directed RNA polymerase, insert domain superfamily | Homologous Superfamily |
| IPR022842 | DNA-directed RNA polymerase subunit Rpo3/Rpb3/RPAC1 | Family |
| IPR001514 | DNA-directed RNA polymerase, 30-40kDa subunit, conserved site | Conserved Site |
| IPR036603 | RNA polymerase, RBP11-like subunit | Homologous Superfamily |
| IPR046399 | DNA-directed RNA polymerase subunit Rpo7 | Family |
| IPR036898 | RNA polymerase Rpb7-like, N-terminal domain superfamily | Homologous Superfamily |
| IPR004519 | DNA-directed RNA polymerase, subunit E/RPC8 | Family |
| IPR003029 | S1 domain | Domain |
| IPR012340 | Nucleic acid-binding, OB-fold | Homologous Superfamily |
| IPR045113 | RNA polymerase subunit Rpb7-like | Family |
| IPR005576 | RNA polymerase Rpb7-like , N-terminal | Domain |
G [auth H] | IPR014381 | DNA-directed RNA polymerase subunit Rpo5/Rpb5 | Family |
G [auth H] | IPR035913 | RPB5-like RNA polymerase subunit superfamily | Homologous Superfamily |
G [auth H] | IPR000783 | RNA polymerase, subunit H/Rpb5 C-terminal | Domain |
G [auth H] | IPR020608 | RNA polymerase, subunit H/Rpb5, conserved site | Conserved Site |
H [auth K] | IPR020708 | DNA-directed RNA polymerase, 14-18kDa subunit, conserved site | Conserved Site |
H [auth K] | IPR036161 | RPB6/omega subunit-like superfamily | Homologous Superfamily |
H [auth K] | IPR006110 | RNA polymerase, subunit omega/Rpo6/RPB6 | Family |
H [auth K] | IPR006111 | Archaeal Rpo6/eukaryotic RPB6 RNA polymerase subunit | Family |
K [auth P] | IPR006591 | RNA polymerase archaeal subunit P/eukaryotic subunit RPABC4 | Family |
K [auth P] | IPR023464 | DNA-directed RNA polymerase subunit Rpo12 | Family |
K [auth P] | IPR029040 | RNA polymerase subunit RPABC4/transcription elongation factor Spt4 | Homologous Superfamily |
J [auth N] | IPR023580 | RNA polymerase subunit RPB10 | Homologous Superfamily |
J [auth N] | IPR020789 | RNA polymerases, subunit N, zinc binding site | Binding Site |
J [auth N] | IPR000268 | DNA-directed RNA polymerase subunit RPABC5/Rpb10 | Family |
| IPR007081 | RNA polymerase Rpb1, domain 5 | Domain |
| IPR045867 | DNA-directed RNA polymerase, subunit beta-prime | Family |
| IPR012757 | DNA-directed RNA polymerase subunit Rpo1C | Family |
| IPR005574 | RNA polymerase subunit Rpb4/RPC9 | Family |
| IPR044876 | HRDC domain superfamily | Homologous Superfamily |
| IPR010997 | HRDC-like superfamily | Homologous Superfamily |
| IPR010924 | DNA-directed RNA polymerase subunit Rpo4 | Family |
I [auth L] | IPR022905 | DNA-directed RNA polymerase subunit Rpo11-like | Family |
I [auth L] | IPR009025 | DNA-directed RNA polymerase, RBP11-like dimerisation domain | Domain |
I [auth L] | IPR036603 | RNA polymerase, RBP11-like subunit | Homologous Superfamily |
I [auth L] | IPR008193 | DNA-directed RNA polymerase Rpb11, 13-16kDa subunit, conserved site | Conserved Site |