Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
A [auth a]SCOP2B SuperfamilyRecA-like P-loop NTPases8057376 3002019 SCOP2B (2022-06-29)
A [auth a]SCOP2B SuperfamilyNucleic acid-binding proteins8057374 3000135 SCOP2B (2022-06-29)
A [auth a]SCOP2B SuperfamilyRho N-terminal domain-like8057372 3001774 SCOP2B (2022-06-29)
C [auth c]SCOP2B SuperfamilyRho N-terminal domain-like8057372 3001774 SCOP2B (2022-06-29)
C [auth c]SCOP2B SuperfamilyNucleic acid-binding proteins8057374 3000135 SCOP2B (2022-06-29)
C [auth c]SCOP2B SuperfamilyRecA-like P-loop NTPases8057376 3002019 SCOP2B (2022-06-29)
D [auth d]SCOP2B SuperfamilyRecA-like P-loop NTPases8057376 3002019 SCOP2B (2022-06-29)
D [auth d]SCOP2B SuperfamilyRho N-terminal domain-like8057372 3001774 SCOP2B (2022-06-29)
D [auth d]SCOP2B SuperfamilyNucleic acid-binding proteins8057374 3000135 SCOP2B (2022-06-29)
E [auth e]SCOP2B SuperfamilyNucleic acid-binding proteins8057374 3000135 SCOP2B (2022-06-29)
E [auth e]SCOP2B SuperfamilyRho N-terminal domain-like8057372 3001774 SCOP2B (2022-06-29)
E [auth e]SCOP2B SuperfamilyRecA-like P-loop NTPases8057376 3002019 SCOP2B (2022-06-29)
F [auth f]SCOP2B SuperfamilyRecA-like P-loop NTPases8057376 3002019 SCOP2B (2022-06-29)
F [auth f]SCOP2B SuperfamilyRho N-terminal domain-like8057372 3001774 SCOP2B (2022-06-29)
F [auth f]SCOP2B SuperfamilyNucleic acid-binding proteins8057374 3000135 SCOP2B (2022-06-29)
B [auth b]SCOP2B SuperfamilyRecA-like P-loop NTPases8057376 3002019 SCOP2B (2022-06-29)
B [auth b]SCOP2B SuperfamilyRho N-terminal domain-like8057372 3001774 SCOP2B (2022-06-29)
B [auth b]SCOP2B SuperfamilyNucleic acid-binding proteins8057374 3000135 SCOP2B (2022-06-29)
H [auth U]SCOP2B SuperfamilyRBP11-like subunits of RNA polymerase8035907 3001655 SCOP2B (2022-06-29)
H [auth U]SCOP2B SuperfamilyRBP11-like subunits of RNA polymerase8035907 3001655 SCOP2B (2022-06-29)
H [auth U]SCOP2B SuperfamilyInsert subdomain of RNA polymerase alpha subunit8037279 3001500 SCOP2B (2022-06-29)
H [auth U]SCOP2B SuperfamilyC-terminal domain of RNA polymerase alpha subunit8042964 3000519 SCOP2B (2022-06-29)
I [auth V]SCOP2B SuperfamilyRBP11-like subunits of RNA polymerase8035907 3001655 SCOP2B (2022-06-29)
I [auth V]SCOP2B SuperfamilyRBP11-like subunits of RNA polymerase8035907 3001655 SCOP2B (2022-06-29)
I [auth V]SCOP2B SuperfamilyInsert subdomain of RNA polymerase alpha subunit8037279 3001500 SCOP2B (2022-06-29)
G [auth A]SCOP2B SuperfamilyRad51 N-terminal domain-like8040765 3000529 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
A [auth a]Rho_RNA_binde7adba3 A: beta barrelsX: OB-foldH: Nucleic acid-binding proteins (From Topology)T: Nucleic acid-binding proteinsF: Rho_RNA_bindECOD (1.6)
A [auth a]Rho_Ne7adba1 A: alpha arraysX: LEM/SAP HeH motif-likeH: LEM/SAP HeH motifT: LEM/SAP HeH motifF: Rho_NECOD (1.6)
A [auth a]ATP-synt_abe7adba2 A: a/b three-layered sandwichesX: P-loop domains-likeH: P-loop domains-relatedT: P-loop containing nucleoside triphosphate hydrolasesF: ATP-synt_abECOD (1.6)
C [auth c]Rho_RNA_binde7adbc2 A: beta barrelsX: OB-foldH: Nucleic acid-binding proteins (From Topology)T: Nucleic acid-binding proteinsF: Rho_RNA_bindECOD (1.6)
C [auth c]Rho_Ne7adbc1 A: alpha arraysX: LEM/SAP HeH motif-likeH: LEM/SAP HeH motifT: LEM/SAP HeH motifF: Rho_NECOD (1.6)
C [auth c]ATP-synt_abe7adbc3 A: a/b three-layered sandwichesX: P-loop domains-likeH: P-loop domains-relatedT: P-loop containing nucleoside triphosphate hydrolasesF: ATP-synt_abECOD (1.6)
D [auth d]Rho_RNA_binde7adbd3 A: beta barrelsX: OB-foldH: Nucleic acid-binding proteins (From Topology)T: Nucleic acid-binding proteinsF: Rho_RNA_bindECOD (1.6)
D [auth d]Rho_Ne7adbd2 A: alpha arraysX: LEM/SAP HeH motif-likeH: LEM/SAP HeH motifT: LEM/SAP HeH motifF: Rho_NECOD (1.6)
D [auth d]ATP-synt_abe7adbd1 A: a/b three-layered sandwichesX: P-loop domains-likeH: P-loop domains-relatedT: P-loop containing nucleoside triphosphate hydrolasesF: ATP-synt_abECOD (1.6)
E [auth e]Rho_RNA_binde7adbe1 A: beta barrelsX: OB-foldH: Nucleic acid-binding proteins (From Topology)T: Nucleic acid-binding proteinsF: Rho_RNA_bindECOD (1.6)
E [auth e]Rho_Ne7adbe3 A: alpha arraysX: LEM/SAP HeH motif-likeH: LEM/SAP HeH motifT: LEM/SAP HeH motifF: Rho_NECOD (1.6)
E [auth e]ATP-synt_abe7adbe2 A: a/b three-layered sandwichesX: P-loop domains-likeH: P-loop domains-relatedT: P-loop containing nucleoside triphosphate hydrolasesF: ATP-synt_abECOD (1.6)
F [auth f]Rho_RNA_binde7adbf3 A: beta barrelsX: OB-foldH: Nucleic acid-binding proteins (From Topology)T: Nucleic acid-binding proteinsF: Rho_RNA_bindECOD (1.6)
F [auth f]Rho_Ne7adbf1 A: alpha arraysX: LEM/SAP HeH motif-likeH: LEM/SAP HeH motifT: LEM/SAP HeH motifF: Rho_NECOD (1.6)
F [auth f]ATP-synt_abe7adbf2 A: a/b three-layered sandwichesX: P-loop domains-likeH: P-loop domains-relatedT: P-loop containing nucleoside triphosphate hydrolasesF: ATP-synt_abECOD (1.6)
B [auth b]Rho_RNA_binde7adbb3 A: beta barrelsX: OB-foldH: Nucleic acid-binding proteins (From Topology)T: Nucleic acid-binding proteinsF: Rho_RNA_bindECOD (1.6)
B [auth b]Rho_Ne7adbb1 A: alpha arraysX: LEM/SAP HeH motif-likeH: LEM/SAP HeH motifT: LEM/SAP HeH motifF: Rho_NECOD (1.6)
B [auth b]ATP-synt_abe7adbb2 A: a/b three-layered sandwichesX: P-loop domains-likeH: P-loop domains-relatedT: P-loop containing nucleoside triphosphate hydrolasesF: ATP-synt_abECOD (1.6)
H [auth U]RNA_pol_A_CTDe7adbU1 A: alpha arraysX: HhH/H2THH: SAM/DNA-glycosylaseT: SAM domain-likeF: RNA_pol_A_CTDECOD (1.6)
H [auth U]RNA_pol_Le7adbU3 A: a+b two layersX: DCoH-likeH: RBP11-like subunits of RNA polymerase (From Topology)T: RBP11-like subunits of RNA polymeraseF: RNA_pol_LECOD (1.6)
H [auth U]RNA_pol_A_bace7adbU2 A: a+b complex topologyX: Ribosomal protein TL5/L25 C-terminal domain-likeH: Insert subdomain of RNA polymerase alpha subunit (From Topology)T: Insert subdomain of RNA polymerase alpha subunitF: RNA_pol_A_bacECOD (1.6)
I [auth V]RNA_pol_Le7adbV1 A: a+b two layersX: DCoH-likeH: RBP11-like subunits of RNA polymerase (From Topology)T: RBP11-like subunits of RNA polymeraseF: RNA_pol_LECOD (1.6)
I [auth V]RNA_pol_A_bace7adbV2 A: a+b complex topologyX: Ribosomal protein TL5/L25 C-terminal domain-likeH: Insert subdomain of RNA polymerase alpha subunit (From Topology)T: Insert subdomain of RNA polymerase alpha subunitF: RNA_pol_A_bacECOD (1.6)
G [auth A]S1_3e7adbA6 A: beta barrelsX: OB-foldH: Nucleic acid-binding proteins (From Topology)T: Nucleic acid-binding proteinsF: S1_3ECOD (1.6)
G [auth A]HHH_5e7adbA1 A: alpha arraysX: HhH/H2THH: SAM/DNA-glycosylaseT: SAM domain-likeF: HHH_5ECOD (1.6)
G [auth A]KH_5e7adbA3 A: a+b two layersX: Alpha-lytic protease prodomain-likeH: KH-domainsT: Prokaryotic type KH domain (KH-domain type II)F: KH_5ECOD (1.6)
G [auth A]nusAe7adbA4 A: a+b two layersX: Alpha-lytic protease prodomain-likeH: KH-domainsT: Prokaryotic type KH domain (KH-domain type II)F: nusAECOD (1.6)
G [auth A]NusA_Ne7adbA2 A: a+b complex topologyX: Transcription factor NusA, N-terminal domain (From Topology)H: Transcription factor NusA, N-terminal domain (From Topology)T: Transcription factor NusA, N-terminal domainF: NusA_NECOD (1.6)
J [auth W]RNA_pol_Rpb6e7adbW1 A: alpha arraysX: RPB6/omega subunit-like (From Homology)H: RPB6/omega subunit-likeT: RNA polymerase omega subunitF: RNA_pol_Rpb6ECOD (1.6)
K [auth X]RNA_pol_Rpb2_6_3rde7adbX4 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: double psiF: RNA_pol_Rpb2_6_3rdECOD (1.6)
K [auth X]PRK09603e7adbX6 A: a+b two layersX: MoeA-I/Ornithine decarboxylase-C/Reverse ferredoxin-like domain in RNA-polymerase (From Topology)H: MoeA-I/Ornithine decarboxylase-C/Reverse ferredoxin-like domain in RNA-polymerase (From Topology)T: MoeA-I/Ornithine decarboxylase-C/Reverse ferredoxin-like domain in RNA-polymeraseF: PRK09603ECOD (1.6)
K [auth X]RNA_pol_Rpb2_6_2nde7adbX2 A: a+b complex topologyX: alpha/beta-Hammerhead/Barrel-sandwich hybridH: alpha/beta-Hammerhead/Barrel-sandwich hybridT: Single hybrid motifF: RNA_pol_Rpb2_6_2ndECOD (1.6)
K [auth X]RNA_pol_Rpb2_6_1ste7adbX10 A: a+b complex topologyX: alpha/beta-Hammerhead/Barrel-sandwich hybridH: alpha/beta-Hammerhead/Barrel-sandwich hybridT: Single hybrid motifF: RNA_pol_Rpb2_6_1stECOD (1.6)
K [auth X]RNA_pol_Rpb2_6_2nd_2e7adbX1 A: a+b complex topologyX: Helical hairpin insertion in E. coli DNA-directed RNA polymerase beta subunit (From Topology)H: Helical hairpin insertion in E. coli DNA-directed RNA polymerase beta subunit (From Topology)T: Helical hairpin insertion in E. coli DNA-directed RNA polymerase beta subunitF: RNA_pol_Rpb2_6_2nd_2ECOD (1.6)
K [auth X]RNA_pol_Rpb2_3e7adbX7 A: a+b complex topologyX: N-terminal domain in beta subunit of DNA dependent RNA-polymerase (From Topology)H: N-terminal domain in beta subunit of DNA dependent RNA-polymerase (From Topology)T: N-terminal domain in beta subunit of DNA dependent RNA-polymeraseF: RNA_pol_Rpb2_3ECOD (1.6)
K [auth X]RNA_pol_Rpb2_1e7adbX5 A: a+b complex topologyX: insertion domain in beta subunit of DNA dependent RNA-polymerase (From Topology)H: insertion domain in beta subunit of DNA dependent RNA-polymerase (From Topology)T: insertion domain in beta subunit of DNA dependent RNA-polymeraseF: RNA_pol_Rpb2_1ECOD (1.6)
K [auth X]RNA_pol_Rpb2_45e7adbX9 A: a+b complex topologyX: barrel domain in beta subunit of DNA dependent RNA-polymerase (From Topology)H: barrel domain in beta subunit of DNA dependent RNA-polymerase (From Topology)T: barrel domain in beta subunit of DNA dependent RNA-polymeraseF: RNA_pol_Rpb2_45ECOD (1.6)
K [auth X]RNA_pol_Rpb2_7e7adbX3 A: a+b complex topologyX: C-terminal domain in beta subunit of DNA dependent RNA-polymerase (From Topology)H: C-terminal domain in beta subunit of DNA dependent RNA-polymerase (From Topology)T: C-terminal domain in beta subunit of DNA dependent RNA-polymeraseF: RNA_pol_Rpb2_7ECOD (1.6)
L [auth Y]RNA_pol_Rpb1_2e7adbY9 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: double psiF: RNA_pol_Rpb1_2ECOD (1.6)
L [auth Y]PRK00566_2nde7adbY4 A: a+b two layersX: MoeA-I/Ornithine decarboxylase-C/Reverse ferredoxin-like domain in RNA-polymerase (From Topology)H: MoeA-I/Ornithine decarboxylase-C/Reverse ferredoxin-like domain in RNA-polymerase (From Topology)T: MoeA-I/Ornithine decarboxylase-C/Reverse ferredoxin-like domain in RNA-polymeraseF: PRK00566_2ndECOD (1.6)
L [auth Y]PRK14844e7adbY6 A: a+b complex topologyX: alpha/beta-Hammerhead/Barrel-sandwich hybridH: alpha/beta-Hammerhead/Barrel-sandwich hybridT: Single hybrid motifF: PRK14844ECOD (1.6)
L [auth Y]RNA_pol_Rpb1_5_1ste7adbY7 A: a+b complex topologyX: alpha/beta-Hammerhead/Barrel-sandwich hybridH: alpha/beta-Hammerhead/Barrel-sandwich hybridT: Single hybrid motifF: RNA_pol_Rpb1_5_1stECOD (1.6)
L [auth Y]PRK00566_3rd,RNA_pol_Rpb1_5_3rde7adbY5 A: a+b complex topologyX: alpha/beta-Hammerhead/Barrel-sandwich hybridH: alpha/beta-Hammerhead/Barrel-sandwich hybridT: Single hybrid motifF: PRK00566_3rd,RNA_pol_Rpb1_5_3rdECOD (1.6)
L [auth Y]RNA_pol_Rpb1_1e7adbY2 A: a+b complex topologyX: N-terminal domain in RNA-polymerase beta-prime subunit (From Topology)H: N-terminal domain in RNA-polymerase beta-prime subunit (From Topology)T: N-terminal domain in RNA-polymerase beta-prime subunitF: RNA_pol_Rpb1_1ECOD (1.6)
L [auth Y]RNA_pol_Rpb1_5_3rde7adbY1 A: a+b complex topologyX: central helical domain in RNA-polymerase beta-prime subunit (From Topology)H: central helical domain in RNA-polymerase beta-prime subunit (From Topology)T: central helical domain in RNA-polymerase beta-prime subunitF: RNA_pol_Rpb1_5_3rdECOD (1.6)
L [auth Y]RNA_pol_Rpb1_4e7adbY3 A: a+b complex topologyX: second helical domain in RNA-polymerase beta-prime subunit (From Topology)H: second helical domain in RNA-polymerase beta-prime subunit (From Topology)T: second helical domain in RNA-polymerase beta-prime subunitF: RNA_pol_Rpb1_4ECOD (1.6)
L [auth Y]RNA_pol_Rpb1_3e7adbY8 A: a+b complex topologyX: first helical domain in RNA-polymerase beta-prime subunit (From Topology)H: first helical domain in RNA-polymerase beta-prime subunit (From Topology)T: first helical domain in RNA-polymerase beta-prime subunitF: RNA_pol_Rpb1_3ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF00006ATP synthase alpha/beta family, nucleotide-binding domain (ATP-synt_ab)ATP synthase alpha/beta family, nucleotide-binding domainThis entry includes the ATP synthase alpha and beta subunits, the ATP synthase associated with flagella and the termination factor Rho.Domain
PF07498Rho termination factor, N-terminal domain (Rho_N)Rho termination factor, N-terminal domainThe Rho termination factor disengages newly transcribed RNA from its DNA template at certain, specific transcripts. It it thought that two copies of Rho bind to RNA and that Rho functions as a hexamer of protomers [1]. This domain is found to the N- ...The Rho termination factor disengages newly transcribed RNA from its DNA template at certain, specific transcripts. It it thought that two copies of Rho bind to RNA and that Rho functions as a hexamer of protomers [1]. This domain is found to the N-terminus of the RNA binding domain (Pfam:PF07497).
Domain
PF07497Rho termination factor, RNA-binding domain (Rho_RNA_bind)Rho termination factor, RNA-binding domainThe Rho termination factor disengages newly transcribed RNA from its DNA template at certain, specific transcripts. It it thought that two copies of Rho bind to RNA and that Rho functions as a hexamer of protomers [1].Domain
H [auth U],
I [auth V]
PF01193RNA polymerase Rpb3/Rpb11 dimerisation domain (RNA_pol_L)RNA polymerase Rpb3/Rpb11 dimerisation domainThe 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 ...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 domain of the alpha subunit/Rpb3 is interrupted by an insert domain (Pfam:PF01000). Some of the alpha subunits also contain iron-sulphur binding domains (Pfam:PF00037). Rpb11 is found as a continuous domain. Members of this family include: alpha subunit from eubacteria, alpha subunits from chloroplasts, Rpb3 subunits from eukaryotes, Rpb11 subunits from eukaryotes, RpoD subunits from archaeal spp, and RpoL subunits from archaeal spp.
Domain
H [auth U],
I [auth V]
PF01000RNA polymerase Rpb3/RpoA insert domain (RNA_pol_A_bac)RNA polymerase Rpb3/RpoA insert domainMembers of this family include: alpha subunit from eubacteria alpha subunits from chloroplasts Rpb3 subunits from eukaryotes RpoD subunits from archaealDomain
H [auth U],
I [auth V]
PF03118Bacterial RNA polymerase, alpha chain C terminal domain (RNA_pol_A_CTD)Bacterial RNA polymerase, alpha chain C terminal domainThe alpha subunit of RNA polymerase consists of two independently folded domains, referred to as amino-terminal and carboxyl terminal domains. The amino terminal domain is involved in the interaction with the other subunits of the RNA polymerase. T ...The alpha subunit of RNA polymerase consists of two independently folded domains, referred to as amino-terminal and carboxyl terminal domains. The amino terminal domain is involved in the interaction with the other subunits of the RNA polymerase. The carboxyl-terminal domain interacts with the DNA and activators. The amino acid sequence of the alpha subunit is conserved in prokaryotic and chloroplast RNA polymerases. There are three regions of particularly strong conservation, two in the amino-terminal and one in the carboxyl- terminal [2].
Domain
G [auth A]PF13184NusA-like KH domain (KH_5)NusA-like KH domain- Domain
G [auth A]PF08529NusA N-terminal domain (NusA_N)NusA N-terminal domainThis domain represents the RNA polymerase binding domain of NusA.Domain
G [auth A]PF14520Helix-hairpin-helix domain (HHH_5)Helix-hairpin-helix domain- Domain
G [auth A]PF00575S1 RNA binding domain (S1)S1 RNA binding domainThe S1 domain occurs in a wide range of RNA associated proteins. It is structurally similar to cold shock protein which binds nucleic acids. The S1 domain has an OB-fold structure.Domain
J [auth W]PF01192RNA polymerase Rpb6 (RNA_pol_Rpb6)RNA polymerase Rpb6- Family
K [auth X]PF04561RNA polymerase Rpb2, domain 2 (RNA_pol_Rpb2_2)RNA polymerase Rpb2, domain 2RNA 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 ...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 polymerase. This domain forms one of the two distinctive lobes of the Rpb2 structure. This domain is also known as the lobe domain [1]. DNA has been demonstrated to bind to the concave surface of the lobe domain, and plays a role in maintaining the transcription bubble [1]. Many of the bacterial members contain large insertions within this domain, as region known as dispensable region 1 (DRI).
Domain
K [auth X]PF10385RNA polymerase beta subunit external 1 domain (RNA_pol_Rpb2_45)RNA polymerase beta subunit external 1 domainRNA 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 ...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 domains 4 and 5 of the yeast protein. It is also known as the external 1 region of the polymerase and is bound in association with the external 2 region [1].
Domain
K [auth X]PF04560RNA polymerase Rpb2, domain 7 (RNA_pol_Rpb2_7)RNA polymerase Rpb2, domain 7RNA 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 ...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 polymerase. This domain comprised of the structural domains anchor and clamp [1]. The clamp region (C-terminal) contains a zinc-binding motif [1]. The clamp region is named due to its interaction with the clamp domain found in Rpb1. The domain also contains a region termed "switch 4". The switches within the polymerase are thought to signal different stages of transcription [1].
Domain
K [auth X]PF04565RNA polymerase Rpb2, domain 3 (RNA_pol_Rpb2_3)RNA polymerase Rpb2, domain 3RNA 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 ...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 proximal to catalytic site [1].
Domain
K [auth X]PF04563RNA polymerase beta subunit (RNA_pol_Rpb2_1)RNA polymerase beta subunit- Family
K [auth X]PF00562RNA polymerase Rpb2, domain 6 (RNA_pol_Rpb2_6)RNA polymerase Rpb2, domain 6RNA 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 ...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 and the wall domain [1]. The hybrid binding domain binds the nascent RNA strand / template DNA strand in the Pol II transcription elongation complex. This domain contains the important structural motifs, switch 3 and the flap loop and binds an active site metal ion[1]. This domain is also involved in binding to Rpb1 and Rpb3 [1]. Many of the bacterial members contain large insertions within this domain, as region known as dispensable region 2 (DRII).
Domain
L [auth Y]PF00623RNA polymerase Rpb1, domain 2 (RNA_pol_Rpb1_2)RNA polymerase Rpb1, domain 2RNA 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 ...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. The invariant motif -NADFDGD- binds the active site magnesium ion [1,2].
Domain
L [auth Y]PF05000RNA polymerase Rpb1, domain 4 (RNA_pol_Rpb1_4)RNA polymerase Rpb1, domain 4RNA 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 ...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 domain. The funnel contain the binding site for some elongation factors [1,2].
Domain
L [auth Y]PF04983RNA polymerase Rpb1, domain 3 (RNA_pol_Rpb1_3)RNA polymerase Rpb1, domain 3RNA 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 ...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 domain. The 3' end of RNA is positioned close to this domain. The pore delimited by this domain is thought to act as a channel through which nucleotides enter the active site and/or where the 3' end of the RNA may be extruded during back-tracking [1,2].
Domain
L [auth Y]PF04998RNA polymerase Rpb1, domain 5 (RNA_pol_Rpb1_5)RNA polymerase Rpb1, domain 5RNA 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 ...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 discontinuous cleft domain that is required to from the central cleft or channel where the DNA is bound [1,2].
Domain
L [auth Y]PF04997RNA polymerase Rpb1, domain 1 (RNA_pol_Rpb1_1)RNA polymerase Rpb1, domain 1RNA 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 do ...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 domain, which a mobile domain involved in positioning the DNA, maintenance of the transcription bubble and positioning of the nascent RNA strand [1,2].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
Transcription termination factor Rho
H [auth U],
I [auth V]
DNA-directed RNA polymerase subunit alpha
G [auth A]Transcription termination/antitermination protein NusA
J [auth W]DNA-directed RNA polymerase subunit omega
K [auth X]DNA-directed RNA polymerase subunit beta
L [auth Y]DNA-directed RNA polymerase subunit beta'
M [auth K]ntDNA---
N [auth L]tDNA---
O [auth R]rut RNA---

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
IPR004665Transcription termination factor RhoFamily
IPR011112Rho termination factor, N-terminalDomain
IPR000194ATPase, F1/V1/A1 complex, alpha/beta subunit, nucleotide-binding domainDomain
IPR003593AAA+ ATPase domainDomain
IPR011129Cold shock domainDomain
IPR036269Rho termination factor, N-terminal domain superfamilyHomologous Superfamily
IPR012340Nucleic acid-binding, OB-foldHomologous Superfamily
IPR011113Rho termination factor, RNA-binding domainDomain
IPR027417P-loop containing nucleoside triphosphate hydrolaseHomologous Superfamily
IPR041703Transcription termination factor Rho, ATP binding domainDomain
H [auth U],
I [auth V]
IPR011773DNA-directed RNA polymerase, alpha subunitFamily
H [auth U],
I [auth V]
IPR011260RNA polymerase, alpha subunit, C-terminalDomain
H [auth U],
I [auth V]
IPR011263DNA-directed RNA polymerase, RpoA/D/Rpb3-typeDomain
H [auth U],
I [auth V]
IPR036603RNA polymerase, RBP11-like subunitHomologous Superfamily
H [auth U],
I [auth V]
IPR011262DNA-directed RNA polymerase, insert domainDomain
H [auth U],
I [auth V]
IPR036643DNA-directed RNA polymerase, insert domain superfamilyHomologous Superfamily
G [auth A]IPR025249KH domain, NusA-likeDomain
G [auth A]IPR036555NusA, N-terminal domain superfamilyHomologous Superfamily
G [auth A]IPR003029S1 domainDomain
G [auth A]IPR013735Transcription factor NusA, N-terminalDomain
G [auth A]IPR030842Transcription termination/antitermination protein NusA, bacterialFamily
G [auth A]IPR010213Transcription termination factor NusADomain
G [auth A]IPR009019K homology domain superfamily, prokaryotic typeHomologous Superfamily
G [auth A]IPR010214Transcription termination factor NusA, C-terminal duplicationRepeat
G [auth A]IPR015946K homology domain-like, alpha/betaHomologous Superfamily
G [auth A]IPR012340Nucleic acid-binding, OB-foldHomologous Superfamily
G [auth A]IPR010995DNA repair Rad51/transcription factor NusA, alpha-helicalHomologous Superfamily
J [auth W]IPR006110RNA polymerase, subunit omega/Rpo6/RPB6Family
J [auth W]IPR036161RPB6/omega subunit-like superfamilyHomologous Superfamily
J [auth W]IPR003716DNA-directed RNA polymerase, omega subunitFamily
K [auth X]IPR007120DNA-directed RNA polymerase, subunit 2, hybrid-binding domainDomain
K [auth X]IPR007121RNA polymerase, beta subunit, conserved siteConserved Site
K [auth X]IPR014724RNA polymerase Rpb2, OB-foldHomologous Superfamily
K [auth X]IPR007642RNA polymerase Rpb2, domain 2Domain
K [auth X]IPR015712DNA-directed RNA polymerase, subunit 2Family
K [auth X]IPR037033DNA-directed RNA polymerase, subunit 2, hybrid-binding domain superfamilyHomologous Superfamily
K [auth X]IPR042107DNA-directed RNA polymerase, beta subunit, external 1 domain superfamilyHomologous Superfamily
K [auth X]IPR037034RNA polymerase Rpb2, domain 2 superfamilyHomologous Superfamily
K [auth X]IPR007645RNA polymerase Rpb2, domain 3Domain
K [auth X]IPR019462DNA-directed RNA polymerase, beta subunit, external 1 domainDomain
K [auth X]IPR010243DNA-directed RNA polymerase beta subunit, bacterial-typeFamily
K [auth X]IPR007644RNA polymerase, beta subunit, protrusionDomain
K [auth X]IPR007641RNA polymerase Rpb2, domain 7Domain
L [auth Y]IPR007081RNA polymerase Rpb1, domain 5Domain
L [auth Y]IPR045867DNA-directed RNA polymerase, subunit beta-primeFamily
L [auth Y]IPR007083RNA polymerase Rpb1, domain 4Domain
L [auth Y]IPR044893RNA polymerase Rpb1, clamp domain superfamilyHomologous Superfamily
L [auth Y]IPR006592RNA polymerase, N-terminalDomain
L [auth Y]IPR007066RNA polymerase Rpb1, domain 3Domain
L [auth Y]IPR012754DNA-directed RNA polymerase, subunit beta-prime, bacterial typeFamily
L [auth Y]IPR042102RNA polymerase Rpb1, domain 3 superfamilyHomologous Superfamily
L [auth Y]IPR000722RNA polymerase, alpha subunitDomain
L [auth Y]IPR038120RNA polymerase Rpb1, funnel domain superfamilyHomologous Superfamily
L [auth Y]IPR007080RNA polymerase Rpb1, domain 1Domain