| 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 |
| 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 |
| IPR049540 | Spt6-like, S1/OB domain | Domain |
| IPR023323 | Tex-like domain superfamily | Homologous Superfamily |
| IPR028088 | Helix-turn-helix DNA-binding domain of Spt6 | Domain |
| IPR035019 | Spt6, SH2 domain, N terminus | Domain |
| IPR035018 | Spt6, SH2 domain, C terminus | Domain |
| IPR028083 | Spt6 acidic, N-terminal domain | Domain |
| IPR007081 | RNA polymerase Rpb1, domain 5 | Domain |
| IPR045867 | DNA-directed RNA polymerase, subunit beta-prime | Family |
| IPR007075 | RNA polymerase Rpb1, domain 6 | Domain |
| IPR000684 | RNA polymerase II, heptapeptide repeat, eukaryotic | Repeat |
| IPR007083 | RNA polymerase Rpb1, domain 4 | Domain |
| IPR044893 | RNA polymerase Rpb1, clamp domain superfamily | Homologous Superfamily |
| IPR006592 | RNA polymerase, N-terminal | Domain |
| IPR007066 | RNA polymerase Rpb1, domain 3 | Domain |
| IPR007073 | RNA polymerase Rpb1, domain 7 | Domain |
| IPR042102 | RNA polymerase Rpb1, domain 3 superfamily | Homologous Superfamily |
| IPR038593 | RNA polymerase Rpb1, domain 7 superfamily | Homologous Superfamily |
| IPR000722 | RNA polymerase, alpha subunit | Domain |
| IPR038120 | RNA polymerase Rpb1, funnel domain superfamily | Homologous Superfamily |
| IPR007080 | RNA polymerase Rpb1, domain 1 | Domain |