Cryo-EM structure of an Escherichia coli RNAP-promoter open complex (RPo) with SspA
Domain Annotation: SCOP2 Classification SCOP2 Database Homepage
| Chains | Type | Family Name | Domain Identifier | Family Identifier | Provenance Source (Version) |
|---|---|---|---|---|---|
| J [auth F] | SCOP2B Superfamily | Sigma2 domain of RNA polymerase sigma factors | 8038503 | 3001393 | SCOP2B (2022-06-29) |
| F [auth B] | SCOP2B Superfamily | Insert subdomain of RNA polymerase alpha subunit | 8037279 | 3001500 | SCOP2B (2022-06-29) |
| F [auth B] | SCOP2B Superfamily | RBP11-like subunits of RNA polymerase | 8035907 | 3001655 | SCOP2B (2022-06-29) |
| F [auth B] | SCOP2B Superfamily | RBP11-like subunits of RNA polymerase | 8035907 | 3001655 | SCOP2B (2022-06-29) |
| E [auth A] | SCOP2B Superfamily | RBP11-like subunits of RNA polymerase | 8035907 | 3001655 | SCOP2B (2022-06-29) |
| E [auth A] | SCOP2B Superfamily | Insert subdomain of RNA polymerase alpha subunit | 8037279 | 3001500 | SCOP2B (2022-06-29) |
| E [auth A] | SCOP2B Superfamily | RBP11-like subunits of RNA polymerase | 8035907 | 3001655 | SCOP2B (2022-06-29) |
| D [auth K] | SCOP2B Superfamily | C-terminal domain of RNA polymerase alpha subunit | 8042964 | 3000519 | SCOP2B (2022-06-29) |
Domain Annotation: ECOD Classification ECOD Database Homepage
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| J [auth F] | e7c97F1 | A: a/b three-layered sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: | ECOD (v294.1) | |
| I [auth E] | e7c97E1 | A: a/b three-layered sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: | ECOD (v294.1) | |
| H [auth D] | e7c97D1 | A: a/b three-layered sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: | ECOD (v294.1) | |
| G [auth C] | e7c97C1 | A: a/b three-layered sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: | ECOD (v294.1) | |
| F [auth B] | Pyr_redox_2 | e7c97B1 | A: a/b three-layered sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: Pyr_redox_2 | ECOD (v294.1) |
| E [auth A] | e7c97A1 | A: a/b three-layered sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: | ECOD (v294.1) | |
| D [auth K] | e7c97K1 | A: a/b three-layered sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: | ECOD (v294.1) | |
| C [auth J] | Pyr_redox_2 | e7c97J1 | A: a/b three-layered sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: Pyr_redox_2 | ECOD (v294.1) |
| B [auth I] | e7c97I1 | A: a/b three-layered sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: | ECOD (v294.1) |
Domain Annotation: CATH CATH Database Homepage
| Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
|---|---|---|---|---|---|---|
| H [auth D] | 1.10.132.30 | Mainly Alpha | Orthogonal Bundle | Topoisomerase I | Chain A, domain 4 | CATH (utative) |
| H [auth D] | 2.40.50.100 | Mainly Beta | Beta Barrel | OB fold (Dihydrolipoamide Acetyltransferase, E2P) | RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain | CATH (utative) |
| G [auth C] | 2.40.50.150 | Mainly Beta | Beta Barrel | OB fold (Dihydrolipoamide Acetyltransferase, E2P) | RNA polymerase II, Rpb2 subunit, wall domain | CATH (utative) |
| F [auth B] | 2.170.120.12 | Mainly Beta | Beta Complex | RNA Polymerase Alpha Subunit | Chain A, domain 2 | CATH (utative) |
| E [auth A] | 2.170.120.12 | Mainly Beta | Beta Complex | RNA Polymerase Alpha Subunit | Chain A, domain 2 | CATH (utative) |
Protein Family Annotation Pfam Database Homepage
| Chains | Accession | Name | Description | Comments | Source |
|---|---|---|---|---|---|
| J [auth F] | PF04539 | Sigma-70 region 3 (Sigma70_r3) | Sigma-70 region 3 | - | Family |
| J [auth F] | PF00140 | Sigma-70 factor, region 1.2 (Sigma70_r1_2) | Sigma-70 factor, region 1.2 | - | Family |
| J [auth F] | PF04542 | Sigma-70 region 2 (Sigma70_r2) | Sigma-70 region 2 | Region 2 of sigma-70 is the most conserved region of the entire protein. All members of this class of sigma-factor contain region 2. The high conservation is due to region 2 containing both the -10 promoter recognition helix and the primary core RNA ... | Domain |
| J [auth F] | PF04545 | Sigma-70, region 4 (Sigma70_r4) | Sigma-70, region 4 | Region 4 of sigma-70 like sigma-factors are involved in binding to the -35 promoter element via a helix-turn-helix motif [1]. Due to the way Pfam works, the threshold has been set artificially high to prevent overlaps with other helix-turn-helix fami ... | Domain |
| J [auth F] | PF04546 | Sigma-70, non-essential region (Sigma70_ner) | Sigma-70, non-essential region | The domain is found in the primary vegetative sigma factor. The function of this domain is unclear and can be removed without loss of function. | Domain |
| I [auth E] | PF01192 | RNA polymerase Rpb6 (RNA_pol_Rpb6) | RNA polymerase Rpb6 | - | Family |
| H [auth D] | PF00623 | RNA polymerase Rpb1, domain 2 (RNA_pol_Rpb1_2) | RNA polymerase Rpb1, domain 2 | RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). This domain, domain 2, contains the active site ... | Domain |
| H [auth D] | PF05000 | RNA polymerase Rpb1, domain 4 (RNA_pol_Rpb1_4) | RNA polymerase Rpb1, domain 4 | RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). This domain, domain 4, represents the funnel do ... | Domain |
| H [auth D] | PF04983 | RNA polymerase Rpb1, domain 3 (RNA_pol_Rpb1_3) | RNA polymerase Rpb1, domain 3 | RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). This domain, domain 3, represents the pore doma ... | Domain |
| H [auth D] | PF04998 | RNA polymerase Rpb1, domain 5 (RNA_pol_Rpb1_5) | RNA polymerase Rpb1, domain 5 | RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). This domain, domain 5, represents the discontin ... | Domain |
| H [auth D] | PF04997 | RNA polymerase Rpb1, domain 1 (RNA_pol_Rpb1_1) | RNA polymerase Rpb1, domain 1 | RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). This domain, domain 1, represents the clamp dom ... | Domain |
| G [auth C] | PF04561 | RNA polymerase Rpb2, domain 2 (RNA_pol_Rpb2_2) | RNA polymerase Rpb2, domain 2 | RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). Rpb2 is the second largest subunit of the RNA po ... | Domain |
| G [auth C] | PF10385 | RNA polymerase beta subunit external 1 domain (RNA_pol_Rpb2_45) | RNA polymerase beta subunit external 1 domain | RNA polymerases catalyse the DNA-dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared with three in eukaryotes (not including mitochondrial or chloroplast polymerases). This domain in prokaryotes spans the gap between ... | Domain |
| G [auth C] | PF04560 | RNA polymerase Rpb2, domain 7 (RNA_pol_Rpb2_7) | RNA polymerase Rpb2, domain 7 | RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). Rpb2 is the second largest subunit of the RNA p ... | Domain |
| G [auth C] | PF04565 | RNA polymerase Rpb2, domain 3 (RNA_pol_Rpb2_3) | RNA polymerase Rpb2, domain 3 | RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). Domain 3, s also known as the fork domain and is ... | Domain |
| G [auth C] | PF04563 | RNA polymerase beta subunit (RNA_pol_Rpb2_1) | RNA polymerase beta subunit | - | Family |
| G [auth C] | PF00562 | RNA polymerase Rpb2, domain 6 (RNA_pol_Rpb2_6) | RNA polymerase Rpb2, domain 6 | RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). This domain represents the hybrid binding domain ... | Domain |
| D [auth K], E [auth A], F [auth B] | PF01193 | RNA polymerase Rpb3/Rpb11 dimerisation domain (RNA_pol_L) | RNA polymerase Rpb3/Rpb11 dimerisation domain | The two eukaryotic subunits Rpb3 and Rpb11 dimerise to from a platform onto which the other subunits of the RNA polymerase assemble (D/L in archaea). The prokaryotic equivalent of the Rpb3/Rpb11 platform is the alpha-alpha dimer. The dimerisation do ... | Domain |
| D [auth K], E [auth A], F [auth B] | PF01000 | RNA polymerase Rpb3/RpoA insert domain (RNA_pol_A_bac) | RNA polymerase Rpb3/RpoA insert domain | Members of this family include: alpha subunit from eubacteria alpha subunits from chloroplasts Rpb3 subunits from eukaryotes RpoD subunits from archaeal | Domain |
| B [auth I], C [auth J] | PF00043 | Glutathione S-transferase, C-terminal domain (GST_C) | Glutathione S-transferase, C-terminal domain | GST conjugates reduced glutathione to a variety of targets including S-crystallin from squid, the eukaryotic elongation factor 1-gamma, the HSP26 family of stress-related proteins and auxin-regulated proteins in plants. Stringent starvation proteins ... | Domain |
| B [auth I], C [auth J] | PF02798 | Glutathione S-transferase, N-terminal domain (GST_N) | Glutathione S-transferase, N-terminal domain | Function: conjugation of reduced glutathione to a variety of targets. Also included in the alignment, but not GSTs: S-crystallins from squid (similarity to GST previously noted); eukaryotic elongation factors 1-gamma (not known to have GST activity a ... | Domain |














