| D [auth E] | IPR014381 | DNA-directed RNA polymerase subunit Rpo5/Rpb5 | Family |
| D [auth E] | IPR035913 | RPB5-like RNA polymerase subunit superfamily | Homologous Superfamily |
| D [auth E] | IPR036710 | RNA polymerase Rpb5, N-terminal domain superfamily | Homologous Superfamily |
| D [auth E] | IPR000783 | RNA polymerase, subunit H/Rpb5 C-terminal | Domain |
| D [auth E] | IPR005571 | RNA polymerase, Rpb5, N-terminal | Domain |
| F [auth H] | IPR012340 | Nucleic acid-binding, OB-fold | Homologous Superfamily |
| F [auth H] | IPR005570 | DNA-directed RNA polymerases I, II, and III subunit RPABC3 | Family |
| J [auth L] | IPR006591 | RNA polymerase archaeal subunit P/eukaryotic subunit RPABC4 | Family |
| J [auth L] | IPR029040 | RNA polymerase subunit RPABC4/transcription elongation factor Spt4 | Homologous Superfamily |
| J [auth L] | IPR039747 | DNA-directed RNA polymerases I, II, and III subunit RPABC4 | Family |
| I [auth K] | IPR022905 | DNA-directed RNA polymerase subunit Rpo11-like | Family |
| I [auth K] | IPR009025 | DNA-directed RNA polymerase, RBP11-like dimerisation domain | Domain |
| I [auth K] | IPR036603 | RNA polymerase, RBP11-like subunit | Homologous Superfamily |
| I [auth K] | IPR008193 | DNA-directed RNA polymerase Rpb11, 13-16kDa subunit, conserved site | Conserved Site |
| I [auth K] | IPR037685 | RNA polymerase RBP11 | Family |
| H [auth J] | IPR023580 | RNA polymerase subunit RPB10 | Homologous Superfamily |
| H [auth J] | IPR020789 | RNA polymerases, subunit N, zinc binding site | Binding Site |
| H [auth J] | IPR000268 | DNA-directed RNA polymerase subunit RPABC5/Rpb10 | Family |
| G [auth I] | IPR001529 | DNA-directed RNA polymerase II subunit RPB9-like, zinc ribbon | Domain |
| G [auth I] | IPR012164 | DNA-directed RNA polymerase subunit/transcription factor S | Family |
| G [auth I] | IPR001222 | Zinc finger, TFIIS-type | Domain |
| G [auth I] | IPR034012 | Pol II subunit B9, C-terminal zinc ribbon | Domain |
| G [auth I] | IPR019761 | DNA-directed RNA polymerase M, 15kDa subunit, conserved site | Conserved Site |
| E [auth F] | IPR020708 | DNA-directed RNA polymerase, 14-18kDa subunit, conserved site | Conserved Site |
| E [auth F] | IPR028363 | DNA-directed RNA polymerase, subunit RPB6 | Family |
| E [auth F] | IPR006110 | RNA polymerase, subunit omega/Rpo6/RPB6 | Family |
| E [auth F] | IPR036161 | RPB6/omega subunit-like superfamily | Homologous Superfamily |
| E [auth F] | IPR006111 | Archaeal Rpo6/eukaryotic RPB6 RNA polymerase subunit | Family |
| IPR011262 | DNA-directed RNA polymerase, insert domain | Domain |
| IPR011263 | DNA-directed RNA polymerase, RpoA/D/Rpb3-type | Domain |
| IPR050518 | Archaeal Rpo3/Eukaryotic RPB3 RNA Polymerase Subunit | Family |
| IPR022842 | DNA-directed RNA polymerase subunit Rpo3/Rpb3/RPAC1 | Family |
| IPR036643 | DNA-directed RNA polymerase, insert domain superfamily | Homologous Superfamily |
| IPR001514 | DNA-directed RNA polymerase, 30-40kDa subunit, conserved site | Conserved Site |
| IPR036603 | RNA polymerase, RBP11-like subunit | Homologous Superfamily |