Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyLuxS/MPP-like metallohydrolase 8038258 3001831 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyLuxS/MPP-like metallohydrolase 8038259 3001831 SCOP2B (2022-06-29)
CSCOP2B Superfamilya domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) 8038264 3000966 SCOP2B (2022-06-29)
CSCOP2B SuperfamilyTransmembrane di-heme cytochromes 8038265 3000517 SCOP2B (2022-06-29)
DSCOP2B SuperfamilyCytochrome c1 subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase), transmembrane anchor 8038268 3000762 SCOP2B (2022-06-29)
DSCOP2B SuperfamilyCytochrome c 8038266 3000815 SCOP2B (2022-06-29)
ESCOP2B SuperfamilyISP transmembrane anchor 8038269 3000753 SCOP2B (2022-06-29)
ESCOP2B SuperfamilyISP domain 8038267 3000233 SCOP2B (2022-06-29)
FSCOP2B Superfamily14 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) 8038272 3000797 SCOP2B (2022-06-29)
GSCOP2B SuperfamilyUbiquinone-binding protein QP-C of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) 8038274 3000770 SCOP2B (2022-06-29)
HSCOP2B SuperfamilyNon-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) 8038275 3000806 SCOP2B (2022-06-29)
JSCOP2B SuperfamilySubunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) 8037844 3000779 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyLuxS/MPP-like metallohydrolase 8038260 3001831 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyLuxS/MPP-like metallohydrolase 8038263 3001831 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
APeptidase_M16_Ce6hawA2 A: a+b two layersX: LuxS, MPP, ThrRS/AlaRS common domainH: LuxS, MPP, ThrRS/AlaRS common domainT: LuxS/MPP-like metallohydrolaseF: Peptidase_M16_CECOD (1.6)
APeptidase_M16e6hawA1 A: a+b two layersX: LuxS, MPP, ThrRS/AlaRS common domainH: LuxS, MPP, ThrRS/AlaRS common domainT: LuxS/MPP-like metallohydrolaseF: Peptidase_M16ECOD (1.6)
CCytochrom_B_Ce6hawC1 A: alpha bundlesX: a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) (From Topology)H: a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) (From Topology)T: a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)F: Cytochrom_B_CECOD (1.6)
CCytochrome_Be6hawC2 A: alpha bundlesX: Transmembrane heme-binding four-helical bundle (From Homology)H: Transmembrane heme-binding four-helical bundleT: Transmembrane di-heme cytochromesF: Cytochrome_BECOD (1.6)
DCytochrom_C1_Ne6hawD2 A: alpha arraysX: Cytochrome c-likeH: Cytochrome c (From Topology)T: Cytochrome cF: Cytochrom_C1_NECOD (1.6)
DCytochrom_C1_Ce6hawD1 A: extended segmentsX: cytochrome c1 transmembrane anchor (From Topology)H: cytochrome c1 transmembrane anchor (From Topology)T: cytochrome c1 transmembrane anchorF: Cytochrom_C1_CECOD (1.6)
ERieske_cytochrome_bc1,Rieske_6e6hawE2 A: beta sandwichesX: ISP domain (From Topology)H: ISP domain (From Topology)T: ISP domainF: Rieske_cytochrome_bc1,Rieske_6ECOD (1.6)
EUCR_TMe6hawE1 A: extended segmentsX: iron-sulfur subunit (ISP) transmembrane anchor (From Topology)H: iron-sulfur subunit (ISP) transmembrane anchor (From Topology)T: iron-sulfur subunit (ISP) transmembrane anchorF: UCR_TMECOD (1.6)
FUCR_14kDe6hawF1 A: alpha arraysX: 14 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) (From Topology)H: 14 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) (From Topology)T: 14 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)F: UCR_14kDECOD (1.6)
GUcrQe6hawG1 A: extended segmentsX: Ubiquinone-binding protein QP-C of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) (From Topology)H: Ubiquinone-binding protein QP-C of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) (From Topology)T: Ubiquinone-binding protein QP-C of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)F: UcrQECOD (1.6)
HUCR_hingee6hawH1 A: alpha bundlesX: cytochrome bc1 complex 11 kDa protein-likeH: Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) (From Topology)T: Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)F: UCR_hingeECOD (1.6)
IUbiq-Cytc-red_Ne6hawI1 A: extended segmentsX: Ubiquinol-cytochrome c reductase 8 kDa protein (From Topology)H: Ubiquinol-cytochrome c reductase 8 kDa protein (From Topology)T: Ubiquinol-cytochrome c reductase 8 kDa proteinF: Ubiq-Cytc-red_NECOD (1.6)
JUCR_UQCRX_QCR9e6hawJ1 A: extended segmentsX: Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) (From Topology)H: Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) (From Topology)T: Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)F: UCR_UQCRX_QCR9ECOD (1.6)
BPeptidase_M16_Ce6hawB2 A: a+b two layersX: LuxS, MPP, ThrRS/AlaRS common domainH: LuxS, MPP, ThrRS/AlaRS common domainT: LuxS/MPP-like metallohydrolaseF: Peptidase_M16_CECOD (1.6)
BPeptidase_M16e6hawB1 A: a+b two layersX: LuxS, MPP, ThrRS/AlaRS common domainH: LuxS, MPP, ThrRS/AlaRS common domainT: LuxS/MPP-like metallohydrolaseF: Peptidase_M16ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A3.30.830.10 Alpha Beta 2-Layer Sandwich Cytochrome Bc1 Complex Chain A, domain 1CATH (4.3.0)
C1.20.810.10 Mainly Alpha Up-down Bundle Cytochrome Bc1 Complex Chain CCATH (4.3.0)
D1.10.760.10 Mainly Alpha Orthogonal Bundle Cytochrome Bc1 Complex Chain D, domain 2CATH (4.3.0)
D1.20.5.100 Mainly Alpha Up-down Bundle Single alpha-helices involved in coiled-coils or other helix-helix interfaces Cytochrome c1, transmembrane anchor, C-terminalCATH (4.3.0)
E1.20.5.270 Mainly Alpha Up-down Bundle Single alpha-helices involved in coiled-coils or other helix-helix interfaces Ubiquinol cytochrome reductase, transmembrane domainCATH (4.3.0)
E2.102.10.10 Mainly Beta 3-layer Sandwich Rieske Iron-sulfur Protein Rieske [2Fe-2S] iron-sulphur domainCATH (4.3.0)
F1.10.1090.10 Mainly Alpha Orthogonal Bundle Cytochrome Bc1 Complex Chain FCATH (4.3.0)
G1.20.5.210 Mainly Alpha Up-down Bundle Single alpha-helices involved in coiled-coils or other helix-helix interfaces Cytochrome b-c1 complex subunit 8CATH (4.3.0)
H1.10.287.20 Mainly Alpha Orthogonal Bundle Helix Hairpins Ubiquinol-cytochrome C reductase hinge domainCATH (4.3.0)
I2.10.210.10 Mainly Beta Ribbon Cytochrome Bc1 Complex Chain ICATH (4.3.0)
J1.20.5.260 Mainly Alpha Up-down Bundle Single alpha-helices involved in coiled-coils or other helix-helix interfaces Cytochrome b-c1 complex subunit 9CATH (4.3.0)
B3.30.830.10 Alpha Beta 2-Layer Sandwich Cytochrome Bc1 Complex Chain A, domain 1CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF05193Peptidase M16 inactive domain (Peptidase_M16_C)Peptidase M16 inactive domainPeptidase M16 consists of two structurally related domains. One is the active peptidase, whereas the other is inactive. The two domains hold the substrate like a clamp [1].Domain
PF00675Insulinase (Peptidase family M16) (Peptidase_M16)Insulinase (Peptidase family M16)- Family
PF00032Cytochrome b(C-terminal)/b6/petD (Cytochrom_B_C)Cytochrome b(C-terminal)/b6/petD- Domain
PF00033Cytochrome b/b6/petB (Cytochrome_B)Cytochrome b/b6/petB- Domain
PF02167Cytochrome C1 family (Cytochrom_C1)Cytochrome C1 family- Family
PF02921Ubiquinol cytochrome reductase transmembrane region (UCR_TM)Ubiquinol cytochrome reductase transmembrane region- Family
PF00355Rieske [2Fe-2S] domain (Rieske)Rieske [2Fe-2S] domainThe rieske domain has a [2Fe-2S] centre. Two conserved cysteines coordinate one Fe ion, while the other Fe ion is coordinated by two conserved histidines. In hyperthermophilic archaea there is a SKTPCX(2-3)C motif at the C-terminus. The cysteines in ...The rieske domain has a [2Fe-2S] centre. Two conserved cysteines coordinate one Fe ion, while the other Fe ion is coordinated by two conserved histidines. In hyperthermophilic archaea there is a SKTPCX(2-3)C motif at the C-terminus. The cysteines in this motif form a disulphide bridge, which stabilises the protein [4].
Domain
PF02271Ubiquinol-cytochrome C reductase complex 14kD subunit (UCR_14kD)Ubiquinol-cytochrome C reductase complex 14kD subunit- Family
PF02939UcrQ family (UcrQ)UcrQ family- Family
PF02320Ubiquinol-cytochrome C reductase hinge protein (UCR_hinge)Ubiquinol-cytochrome C reductase hinge protein- Family
PF09165Ubiquinol-cytochrome c reductase 8 kDa, N-terminal (Ubiq-Cytc-red_N)Ubiquinol-cytochrome c reductase 8 kDa, N-terminalMembers of this family adopt a structure consisting of many antiparallel beta sheets, with few alpha helices, in a non-globular arrangement. They are required for proper functioning of the respiratory chain [1].Domain
PF05365Ubiquinol-cytochrome C reductase, UQCRX/QCR9 like (UCR_UQCRX_QCR9)Ubiquinol-cytochrome C reductase, UQCRX/QCR9 like- Family
PF05193Peptidase M16 inactive domain (Peptidase_M16_C)Peptidase M16 inactive domainPeptidase M16 consists of two structurally related domains. One is the active peptidase, whereas the other is inactive. The two domains hold the substrate like a clamp [1].Domain
PF00675Insulinase (Peptidase family M16) (Peptidase_M16)Insulinase (Peptidase family M16)- Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
Cytochrome b-c1 complex subunit 1, mitochondrial -
Cytochrome b
Cytochrome c1, heme protein, mitochondrial
Cytochrome b-c1 complex subunit Rieske, mitochondrial
Cytochrome b-c1 complex subunit 7-
Cytochrome b-c1 complex subunit 8-
Cytochrome b-c1 complex subunit 6, mitochondrial-
Cytochrome b-c1 complex subunit Rieske, mitochondrial
Cytochrome b-c1 complex subunit 9-
Cytochrome b-c1 complex subunit 2, mitochondrial

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
IPR007863Peptidase M16, C-terminalDomain
IPR011765Peptidase M16, N-terminalDomain
IPR011249Metalloenzyme, LuxS/M16 peptidase-likeHomologous Superfamily
IPR050361Mitochondrial Processing Peptidase/Ubiquinol-cytochrome c Reductase ComplexFamily
IPR036150Cytochrome b/b6, C-terminal domain superfamilyHomologous Superfamily
IPR027387Cytochrome b/b6-like domain superfamilyHomologous Superfamily
IPR048260Cytochrome b/b6, C-terminal domain, eukaryotic/bacterialDomain
IPR016174Di-haem cytochrome, transmembraneHomologous Superfamily
IPR005798Cytochrome b/b6, C-terminalDomain
IPR048259Cytochrome b/b6, N-terminal domain, eukaryotic/bacterialDomain
IPR030689Cytochrome bFamily
IPR005797Cytochrome b/b6, N-terminal domainDomain
IPR036909Cytochrome c-like domain superfamilyHomologous Superfamily
IPR002326Cytochrome c1Family
IPR009056Cytochrome c-like domainDomain
IPR021157Cytochrome c1, transmembrane anchor, C-terminalHomologous Superfamily
IPR036922Rieske [2Fe-2S] iron-sulphur domain superfamilyHomologous Superfamily
IPR014349Rieske iron-sulphur proteinFamily
IPR011070Globular protein, non-globular alpha/beta subunitHomologous Superfamily
IPR004192Cytochrome b-c1 complex subunit Rieske, transmembrane domainDomain
IPR015248Ubiquinol-cytochrome c reductase iron-sulphur subunit, N-terminalDomain
IPR017941Rieske [2Fe-2S] iron-sulphur domainDomain
IPR005805Rieske iron-sulphur protein, C-terminalDomain
IPR037008Cytochrome bc1 complex subunit Rieske, transmembrane domain superfamilyHomologous Superfamily
IPR006317Ubiquinol-cytochrome c reductase, iron-sulphur subunitDomain
IPR003197Cytochrome b-c1 complex subunit 7Family
IPR036544Cytochrome b-c1 complex subunit 7 superfamilyHomologous Superfamily
IPR004205Cytochrome b-c1 complex subunit 8Family
IPR036642Cytochrome b-c1 complex subunit 8 superfamilyHomologous Superfamily
IPR003422Cytochrome b-c1 complex, subunit 6Family
IPR023184Ubiquinol-cytochrome C reductase hinge domainDomain
IPR036811Ubiquinol-cytochrome C reductase hinge domain superfamilyHomologous Superfamily
IPR036922Rieske [2Fe-2S] iron-sulphur domain superfamilyHomologous Superfamily
IPR014349Rieske iron-sulphur proteinFamily
IPR011070Globular protein, non-globular alpha/beta subunitHomologous Superfamily
IPR004192Cytochrome b-c1 complex subunit Rieske, transmembrane domainDomain
IPR015248Ubiquinol-cytochrome c reductase iron-sulphur subunit, N-terminalDomain
IPR017941Rieske [2Fe-2S] iron-sulphur domainDomain
IPR005805Rieske iron-sulphur protein, C-terminalDomain
IPR037008Cytochrome bc1 complex subunit Rieske, transmembrane domain superfamilyHomologous Superfamily
IPR006317Ubiquinol-cytochrome c reductase, iron-sulphur subunitDomain
IPR008027Cytochrome b-c1 complex subunit 9Family
IPR036656Cytochrome b-c1 complex subunit 9 superfamilyHomologous Superfamily
IPR007863Peptidase M16, C-terminalDomain
IPR011765Peptidase M16, N-terminalDomain
IPR011249Metalloenzyme, LuxS/M16 peptidase-likeHomologous Superfamily
IPR050361Mitochondrial Processing Peptidase/Ubiquinol-cytochrome c Reductase ComplexFamily
IPR001431Peptidase M16, zinc-binding siteBinding Site

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

ChainsExternal LinkComment
A, B, C, D, E
PDBTMAnnotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

ChainsExternal LinkComment
A, B, C, D, E
MemProtMDAnnotated as membrane protein by MemProtMD