| 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 |
| IPR006591 | RNA polymerase archaeal subunit P/eukaryotic subunit RPABC4 | Family |
| IPR029040 | RNA polymerase subunit RPABC4/transcription elongation factor Spt4 | Homologous Superfamily |
| IPR039747 | DNA-directed RNA polymerases I, II, and III subunit RPABC4 | Family |
| IPR042066 | Spt6, Death-like domain | Homologous Superfamily |
| IPR028231 | Transcription elongation factor Spt6, YqgF domain | Domain |
| IPR037027 | YqgF/RNase H-like domain superfamily | Homologous Superfamily |
| IPR036860 | SH2 domain superfamily | Homologous Superfamily |
| IPR000980 | SH2 domain | Domain |
| IPR006641 | YqgF/RNase H-like domain | Domain |
| IPR041692 | HHH domain 9 | Domain |
| IPR010994 | RuvA domain 2-like | Homologous Superfamily |
| IPR023319 | Tex-like protein, HTH domain superfamily | Homologous Superfamily |
| IPR012337 | Ribonuclease H-like superfamily | Homologous Superfamily |
| IPR017072 | Transcription elongation factor Spt6 | Family |
| IPR035420 | Spt6, SH2 domain | Domain |
| IPR032706 | Transcription elongation factor Spt6, helix-hairpin-helix motif | Domain |
| IPR003029 | S1 domain | Domain |
| IPR023323 | Tex-like domain superfamily | Homologous Superfamily |
| IPR055179 | Tex-like, central region | Domain |
| IPR028088 | Helix-turn-helix DNA-binding domain of Spt6 | Domain |
| IPR035019 | Spt6, SH2 domain, N terminus | Domain |
| IPR035018 | Spt6, SH2 domain, C terminus | Domain |
| IPR012340 | Nucleic acid-binding, OB-fold | Homologous Superfamily |
| IPR028083 | Spt6 acidic, N-terminal domain | Domain |
| IPR011990 | Tetratricopeptide-like helical domain superfamily | Homologous Superfamily |
| IPR031101 | RNA polymerase-associated protein Ctr9 | Family |
| IPR019734 | Tetratricopeptide repeat | Repeat |
| IPR036128 | Plus3-like superfamily | Homologous Superfamily |
| IPR004343 | Plus-3 domain | Domain |
| IPR038103 | Cell division control protein 73, C-terminal domain superfamily | Homologous Superfamily |
| IPR031336 | Cell division control protein 73, C-terminal | Domain |
| IPR007852 | Cdc73/Parafibromin | Family |
| IPR032041 | Paf1 complex subunit Cdc73, N-terminal domain | Domain |
CA [auth c], GA [auth g] | IPR009072 | Histone-fold | Homologous Superfamily |
CA [auth c], GA [auth g] | IPR007125 | Histone H2A/H2B/H3 | Domain |
CA [auth c], GA [auth g] | IPR002119 | Histone H2A | Family |
CA [auth c], GA [auth g] | IPR032454 | Histone H2A, C-terminal domain | Domain |
CA [auth c], GA [auth g] | IPR032458 | Histone H2A conserved site | Conserved Site |
DA [auth d], HA [auth h] | IPR009072 | Histone-fold | Homologous Superfamily |
DA [auth d], HA [auth h] | IPR007125 | Histone H2A/H2B/H3 | Domain |
DA [auth d], HA [auth h] | IPR000558 | Histone H2B | Family |
| IPR007066 | RNA polymerase Rpb1, domain 3 | Domain |
| IPR007081 | RNA polymerase Rpb1, domain 5 | Domain |
| IPR007073 | RNA polymerase Rpb1, domain 7 | Domain |
| IPR045867 | DNA-directed RNA polymerase, subunit beta-prime | Family |
| IPR042102 | RNA polymerase Rpb1, domain 3 superfamily | Homologous Superfamily |
| IPR007075 | RNA polymerase Rpb1, domain 6 | Domain |
| IPR000684 | RNA polymerase II, heptapeptide repeat, eukaryotic | Repeat |
| IPR007083 | RNA polymerase Rpb1, domain 4 | Domain |
| IPR038593 | RNA polymerase Rpb1, domain 7 superfamily | Homologous Superfamily |
| 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 |
| IPR023580 | RNA polymerase subunit RPB10 | Homologous Superfamily |
| IPR020789 | RNA polymerases, subunit N, zinc binding site | Binding Site |
| IPR000268 | DNA-directed RNA polymerase subunit RPABC5/Rpb10 | Family |
| IPR022905 | DNA-directed RNA polymerase subunit Rpo11-like | Family |
| IPR009025 | DNA-directed RNA polymerase, RBP11-like dimerisation domain | Domain |
| IPR036603 | RNA polymerase, RBP11-like subunit | Homologous Superfamily |
| IPR008193 | DNA-directed RNA polymerase Rpb11, 13-16kDa subunit, conserved site | Conserved Site |
| IPR037685 | RNA polymerase RBP11 | Family |
| IPR017923 | Transcription factor IIS, N-terminal | Domain |
| IPR051037 | RNA Polymerase II Transcription Factor IWS1 | Family |
| IPR035441 | TFIIS/LEDGF domain superfamily | Homologous Superfamily |
| IPR006289 | Transcription elongation factor, TFIIS | Family |
| IPR001222 | Zinc finger, TFIIS-type | Domain |
| IPR003618 | Transcription elongation factor S-II, central domain | Domain |
| IPR035441 | TFIIS/LEDGF domain superfamily | Homologous Superfamily |
| IPR036575 | Transcription elongation factor S-II, central domain superfamily | Homologous Superfamily |
| IPR035100 | Transcription elongation factor, IIS-type | Family |
| IPR017923 | Transcription factor IIS, N-terminal | Domain |
| IPR003617 | Transcription elongation factor, TFIIS/CRSP70, N-terminal, sub-type | 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 |
| IPR007149 | Leo1-like protein | Family |
| IPR007133 | RNA polymerase II associated factor Paf1 | Family |
| IPR019775 | WD40 repeat, conserved site | Conserved Site |
| IPR036322 | WD40-repeat-containing domain superfamily | Homologous Superfamily |
| IPR051510 | Superkiller complex protein 8 | Family |
| IPR001680 | WD40 repeat | Repeat |
| IPR020472 | G-protein beta WD-40 repeat | Repeat |
| IPR015943 | WD40/YVTN repeat-like-containing domain superfamily | Homologous Superfamily |
| IPR038510 | Spt4 superfamily | Homologous Superfamily |
| IPR009287 | Transcription initiation Spt4 | Family |
| IPR029040 | RNA polymerase subunit RPABC4/transcription elongation factor Spt4 | Homologous Superfamily |
| IPR022800 | Spt4/RpoE2 zinc finger | Domain |
| IPR041980 | Spt5, KOW domain repeat 6 | Domain |
| IPR041976 | Spt5, KOW domain repeat 3 | Domain |
| IPR039385 | NGN domain, eukaryotic | Domain |
| IPR014722 | Large ribosomal subunit protein uL2, domain 2 | Homologous Superfamily |
| IPR022581 | Spt5 transcription elongation factor, N-terminal | Domain |
| IPR024945 | Spt5 C-terminal domain | Domain |
| IPR006645 | NusG-like, N-terminal | Domain |
| IPR041975 | Spt5, KOW domain repeat 2 | Domain |
| IPR039659 | Transcription elongation factor SPT5 | Family |
| IPR036735 | NusG, N-terminal domain superfamily | Homologous Superfamily |
| IPR008991 | Translation protein SH3-like domain superfamily | Homologous Superfamily |
| IPR041973 | Spt5, KOW domain repeat 1 | Domain |
| IPR005100 | NGN domain | Domain |
| IPR041977 | Spt5, KOW domain repeat 4 | Domain |
| IPR017071 | Transcription elongation factor Spt5, eukaryote | Family |
| IPR005824 | KOW | Domain |
| IPR041978 | Spt5, KOW domain repeat 5 | Domain |
AA [auth a], EA [auth e] | IPR009072 | Histone-fold | Homologous Superfamily |
AA [auth a], EA [auth e] | IPR007125 | Histone H2A/H2B/H3 | Domain |
AA [auth a], EA [auth e] | IPR000164 | Histone H3/CENP-A | Family |
BA [auth b], FA [auth f] | IPR009072 | Histone-fold | Homologous Superfamily |
BA [auth b], FA [auth f] | IPR001951 | Histone H4 | Family |
BA [auth b], FA [auth f] | IPR035425 | CENP-T/Histone H4, histone fold | Domain |
BA [auth b], FA [auth f] | IPR019809 | Histone H4, conserved site | Conserved Site |
BA [auth b], FA [auth f] | IPR004823 | TATA box binding protein associated factor (TAF), histone-like fold domain | Domain |
| IPR014381 | DNA-directed RNA polymerase subunit Rpo5/Rpb5 | Family |
| IPR035913 | RPB5-like RNA polymerase subunit superfamily | Homologous Superfamily |
| IPR036710 | RNA polymerase Rpb5, N-terminal domain superfamily | Homologous Superfamily |
| IPR000783 | RNA polymerase, subunit H/Rpb5 C-terminal | Domain |
| IPR020608 | RNA polymerase, subunit H/Rpb5, conserved site | Conserved Site |
| IPR005571 | RNA polymerase, Rpb5, N-terminal | Domain |
| IPR020708 | DNA-directed RNA polymerase, 14-18kDa subunit, conserved site | Conserved Site |
| IPR036161 | RPB6/omega subunit-like superfamily | Homologous Superfamily |
| IPR028363 | DNA-directed RNA polymerase, subunit RPB6 | Family |
| IPR006110 | RNA polymerase, subunit omega/Rpo6/RPB6 | Family |
| IPR006111 | Archaeal Rpo6/eukaryotic RPB6 RNA polymerase subunit | Family |
| IPR036898 | RNA polymerase Rpb7-like, N-terminal domain superfamily | Homologous Superfamily |
| 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 |
| IPR012340 | Nucleic acid-binding, OB-fold | Homologous Superfamily |
| IPR005570 | DNA-directed RNA polymerases I, II, and III subunit RPABC3 | Family |
| IPR001529 | DNA-directed RNA polymerase II subunit RPB9-like, zinc ribbon | Domain |
| IPR012164 | DNA-directed RNA polymerase subunit/transcription factor S | Family |
| IPR001222 | Zinc finger, TFIIS-type | Domain |
| IPR034012 | Pol II subunit B9, C-terminal zinc ribbon | Domain |
| IPR019761 | DNA-directed RNA polymerase M, 15kDa subunit, conserved site | Conserved Site |