Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
C [auth A]SCOP2B SuperfamilyRBP11-like subunits of RNA polymerase 8035907 3001655 SCOP2B (2022-06-29)
C [auth A]SCOP2B SuperfamilyInsert subdomain of RNA polymerase alpha subunit 8037279 3001500 SCOP2B (2022-06-29)
D [auth B]SCOP2B SuperfamilyRBP11-like subunits of RNA polymerase 8035907 3001655 SCOP2B (2022-06-29)
D [auth B]SCOP2B SuperfamilyInsert subdomain of RNA polymerase alpha subunit 8037279 3001500 SCOP2B (2022-06-29)
H [auth F]SCOP2B SuperfamilySigma2 domain of RNA polymerase sigma factors 8038503 3001393 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
C [auth A]RNA_pol_Le7n4eA1 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)
C [auth A]RNA_pol_A_bace7n4eA2 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)
D [auth B]RNA_pol_Le7n4eB2 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)
D [auth B]RNA_pol_A_bace7n4eB1 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)
E [auth C]RNA_pol_Rpb2_6_3rde7n4eC10 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: double psiF: RNA_pol_Rpb2_6_3rdECOD (1.6)
E [auth C]PRK09603e7n4eC2 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)
E [auth C]RNA_pol_Rpb2_6_2nde7n4eC9 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)
E [auth C]RNA_pol_Rpb2_6_1ste7n4eC8 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)
E [auth C]RNA_pol_Rpb2_6_2nd_2e7n4eC7 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)
E [auth C]RNA_pol_Rpb2_3e7n4eC1 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)
E [auth C]RNA_pol_Rpb2_1e7n4eC3 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)
E [auth C]RNA_pol_Rpb2_45e7n4eC4 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)
E [auth C]RNA_pol_Rpb2_7e7n4eC6 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)
F [auth D]RNA_pol_Rpb1_2e7n4eD7 A: beta barrelsX: cradle loop barrelH: RIFT-relatedT: double psiF: RNA_pol_Rpb1_2ECOD (1.6)
F [auth D]PRK00566_2nde7n4eD4 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)
F [auth D]PRK14844e7n4eD1 A: a+b complex topologyX: alpha/beta-Hammerhead/Barrel-sandwich hybridH: alpha/beta-Hammerhead/Barrel-sandwich hybridT: Single hybrid motifF: PRK14844ECOD (1.6)
F [auth D]RNA_pol_Rpb1_5_1ste7n4eD9 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)
F [auth D]PRK00566_3rd,RNA_pol_Rpb1_5_3rde7n4eD8 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)
F [auth D]RNA_pol_Rpb1_1e7n4eD5 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)
F [auth D]RNA_pol_Rpb1_5_3rde7n4eD3 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)
F [auth D]RNA_pol_Rpb1_4e7n4eD2 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)
F [auth D]RNA_pol_Rpb1_3e7n4eD6 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)
G [auth E]RNA_pol_Rpb6e7n4eE1 A: alpha arraysX: RPB6/omega subunit-like (From Homology)H: RPB6/omega subunit-likeT: RNA polymerase omega subunitF: RNA_pol_Rpb6ECOD (1.6)
H [auth F]Sigma70_r3e7n4eF2 A: alpha arraysX: HTHH: HTHT: tri-helicalF: Sigma70_r3ECOD (1.6)
H [auth F]Sigma70_r3,Sigma70_r2_2e7n4eF1 A: alpha complex topologyX: Sigma2 domain-likeH: Sigma2 domain of RNA polymerase sigma factors (From Topology)T: Sigma2 domain of RNA polymerase sigma factorsF: Sigma70_r3,Sigma70_r2_2ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
C [auth A],
D [auth B]
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 ...Domain
C [auth A],
D [auth B]
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 archaeal Domain
E [auth C]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 ...Domain
E [auth C]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 ...Domain
E [auth C]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 ...Domain
E [auth C]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 ...Domain
E [auth C]PF04563RNA polymerase beta subunit (RNA_pol_Rpb2_1)RNA polymerase beta subunit- Family
E [auth C]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 ...Domain
F [auth D]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 ...Domain
F [auth D]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 ...Domain
F [auth D]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 ...Domain
F [auth D]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 ...Domain
G [auth E]PF01192RNA polymerase Rpb6 (RNA_pol_Rpb6)RNA polymerase Rpb6- Family
H [auth F]PF04539Sigma-70 region 3 (Sigma70_r3)Sigma-70 region 3- Family
H [auth F]PF00140Sigma-70 factor, region 1.2 (Sigma70_r1_2)Sigma-70 factor, region 1.2- Family
H [auth F]PF04542Sigma-70 region 2 (Sigma70_r2)Sigma-70 region 2Region 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
H [auth F]PF04546Sigma-70, non-essential region (Sigma70_ner)Sigma-70, non-essential regionThe 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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A [auth 1]DNA (61-MER)---
B [auth 2]DNA (61-MER)---
C [auth A],
D [auth B]
DNA-directed RNA polymerase subunit alpha
E [auth C]DNA-directed RNA polymerase subunit beta
F [auth D]DNA-directed RNA polymerase subunit beta'
G [auth E]DNA-directed RNA polymerase subunit omega
H [auth F]RNA polymerase sigma factor RpoD
I [auth R]5'-R(*UP*UP*CP*GP*GP*AP*GP*AP*GP*GP*UP*A)-3'---

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
C [auth A],
D [auth B]
IPR011773DNA-directed RNA polymerase, alpha subunitFamily
C [auth A],
D [auth B]
IPR011260RNA polymerase, alpha subunit, C-terminalDomain
C [auth A],
D [auth B]
IPR011263DNA-directed RNA polymerase, RpoA/D/Rpb3-typeDomain
C [auth A],
D [auth B]
IPR036603RNA polymerase, RBP11-like subunitHomologous Superfamily
C [auth A],
D [auth B]
IPR011262DNA-directed RNA polymerase, insert domainDomain
C [auth A],
D [auth B]
IPR036643DNA-directed RNA polymerase, insert domain superfamilyHomologous Superfamily
E [auth C]IPR007120DNA-directed RNA polymerase, subunit 2, hybrid-binding domainDomain
E [auth C]IPR007121RNA polymerase, beta subunit, conserved siteConserved Site
E [auth C]IPR014724RNA polymerase Rpb2, OB-foldHomologous Superfamily
E [auth C]IPR007642RNA polymerase Rpb2, domain 2Domain
E [auth C]IPR015712DNA-directed RNA polymerase, subunit 2Family
E [auth C]IPR037033DNA-directed RNA polymerase, subunit 2, hybrid-binding domain superfamilyHomologous Superfamily
E [auth C]IPR042107DNA-directed RNA polymerase, beta subunit, external 1 domain superfamilyHomologous Superfamily
E [auth C]IPR037034RNA polymerase Rpb2, domain 2 superfamilyHomologous Superfamily
E [auth C]IPR007645RNA polymerase Rpb2, domain 3Domain
E [auth C]IPR019462DNA-directed RNA polymerase, beta subunit, external 1 domainDomain
E [auth C]IPR010243DNA-directed RNA polymerase beta subunit, bacterial-typeFamily
E [auth C]IPR007644RNA polymerase, beta subunit, protrusionDomain
E [auth C]IPR007641RNA polymerase Rpb2, domain 7Domain
F [auth D]IPR007081RNA polymerase Rpb1, domain 5Domain
F [auth D]IPR045867DNA-directed RNA polymerase, subunit beta-primeFamily
F [auth D]IPR007083RNA polymerase Rpb1, domain 4Domain
F [auth D]IPR044893RNA polymerase Rpb1, clamp domain superfamilyHomologous Superfamily
F [auth D]IPR006592RNA polymerase, N-terminalDomain
F [auth D]IPR007066RNA polymerase Rpb1, domain 3Domain
F [auth D]IPR012754DNA-directed RNA polymerase, subunit beta-prime, bacterial typeFamily
F [auth D]IPR042102RNA polymerase Rpb1, domain 3 superfamilyHomologous Superfamily
F [auth D]IPR000722RNA polymerase, alpha subunitDomain
F [auth D]IPR038120RNA polymerase Rpb1, funnel domain superfamilyHomologous Superfamily
F [auth D]IPR007080RNA polymerase Rpb1, domain 1Domain
G [auth E]IPR003716DNA-directed RNA polymerase, omega subunitFamily
G [auth E]IPR006110RNA polymerase, subunit omega/Rpo6/RPB6Family
G [auth E]IPR036161RPB6/omega subunit-like superfamilyHomologous Superfamily
H [auth F]IPR007627RNA polymerase sigma-70 region 2Domain
H [auth F]IPR007127RNA polymerase sigma factor 70, region 1.1Domain
H [auth F]IPR000943RNA polymerase sigma-70Domain
H [auth F]IPR013325RNA polymerase sigma factor, region 2Homologous Superfamily
H [auth F]IPR013324RNA polymerase sigma factor, region 3/4-likeHomologous Superfamily
H [auth F]IPR036388Winged helix-like DNA-binding domain superfamilyHomologous Superfamily
H [auth F]IPR012760RNA polymerase sigma factor RpoD, C-terminalDomain
H [auth F]IPR009042RNA polymerase sigma-70 region 1.2Domain
H [auth F]IPR007630RNA polymerase sigma-70 region 4Domain
H [auth F]IPR014284RNA polymerase sigma-70-like domainDomain
H [auth F]IPR007624RNA polymerase sigma-70 region 3Domain
H [auth F]IPR007631RNA polymerase sigma factor 70, non-essential domainDomain
H [auth F]IPR028630RNA polymerase sigma factor RpoDFamily
H [auth F]IPR042189Sigma-70 factor, region 1.1 superfamilyHomologous Superfamily
H [auth F]IPR050239Sigma-70 factor family, RNA polymerase initiation factorsFamily