Annotations: 4U3F

Cytochrome bc1 complex from chicken with designed inhibitor bound

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Protein Modification Annotation

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
R [auth U]	SCOP2B Superfamily	Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8068575	3000806	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8068575	3000806	SCOP2B (2022-06-29)
P [auth S]	SCOP2B Superfamily	14 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8068577	3000797	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	14 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8068577	3000797	SCOP2B (2022-06-29)
M [auth P]	SCOP2B Superfamily	a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8042105	3000966	SCOP2B (2022-06-29)
M [auth P]	SCOP2B Superfamily	Transmembrane di-heme cytochromes	8042108	3000517	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Transmembrane di-heme cytochromes	8042108	3000517	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8042105	3000966	SCOP2B (2022-06-29)
T [auth W]	SCOP2B Superfamily	Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8068589	3000779	SCOP2B (2022-06-29)
J	SCOP2 Family	Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8097735	4002059	SCOP2 (2022-06-29)
J	SCOP2 Superfamily	Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8097736	3000779	SCOP2 (2022-06-29)
J	SCOP2B Superfamily	Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8068589	3000779	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)
S [auth V]	Cytochrom_C1	e4u3fV1	A: alpha arrays	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: Cytochrom_C1	ECOD (v295.2)
I	Cytochrom_C1	e4u3fI1	A: alpha arrays	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: Cytochrom_C1	ECOD (v295.2)
R [auth U]	GCV_H	e4u3fU1	A: alpha arrays	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: GCV_H	ECOD (v295.2)
H	GCV_H	e4u3fH1	A: alpha arrays	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: GCV_H	ECOD (v295.2)
Q [auth T]	GCV_H	e4u3fT1	A: alpha arrays	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: GCV_H	ECOD (v295.2)
G	GCV_H	e4u3fG1	A: alpha arrays	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: GCV_H	ECOD (v295.2)
P [auth S]	GCV_H	e4u3fS1	A: alpha arrays	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: GCV_H	ECOD (v295.2)
F	GCV_H	e4u3fF1	A: alpha arrays	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: GCV_H	ECOD (v295.2)
O [auth R]		e4u3fR2	A: alpha arrays	X: Chlorophyll a-b binding protein	H: Chlorophyll a-b binding protein	T: Chlorophyll a-b binding protein	F:	ECOD (v295.2)
O [auth R]	PilO	e4u3fR3	A: alpha arrays	X: TIM beta/alpha-barrel	H: TIM barrels	T: TIM barrels	F: PilO	ECOD (v295.2)
E		e4u3fE1	A: alpha arrays	X: Lipocalins/Streptavidin	H: Enterocin 7A and 7B	T: Enterocin 7A and 7B	F:	ECOD (v295.2)
N [auth Q]	GCV_H	e4u3fQ1	A: alpha arrays	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: GCV_H	ECOD (v295.2)
D	GCV_H	e4u3fD1	A: alpha arrays	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: GCV_H	ECOD (v295.2)
M [auth P]	GCV_H	e4u3fP1	A: alpha arrays	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: GCV_H	ECOD (v295.2)
C	GCV_H	e4u3fC1	A: alpha arrays	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: GCV_H	ECOD (v295.2)
L [auth O]	GCV_H	e4u3fO1	A: alpha arrays	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: GCV_H	ECOD (v295.2)
B	GCV_H	e4u3fB1	A: alpha arrays	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: GCV_H	ECOD (v295.2)
T [auth W]	GCV_H	e4u3fW1	A: alpha arrays	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: GCV_H	ECOD (v295.2)
J	GCV_H	e4u3fJ1	A: alpha arrays	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: GCV_H	ECOD (v295.2)
K [auth N]	GCV_H	e4u3fN1	A: alpha arrays	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: GCV_H	ECOD (v295.2)
A	GCV_H	e4u3fA1	A: alpha arrays	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: GCV_H	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
S [auth V]	2.10.210.10	Mainly Beta	Ribbon	Cytochrome Bc1 Complex	Chain I	CATH (4.3.0)
I	2.10.210.10	Mainly Beta	Ribbon	Cytochrome Bc1 Complex	Chain I	CATH (4.3.0)
R [auth U]	1.10.287.20	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Ubiquinol-cytochrome C reductase hinge domain	CATH (4.3.0)
H	1.10.287.20	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Ubiquinol-cytochrome C reductase hinge domain	CATH (4.3.0)
Q [auth T]	1.20.5.210	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Cytochrome b-c1 complex subunit 8	CATH (4.3.0)
G	1.20.5.210	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Cytochrome b-c1 complex subunit 8	CATH (4.3.0)
P [auth S]	1.10.1090.10	Mainly Alpha	Orthogonal Bundle	Cytochrome Bc1 Complex	Chain F	CATH (4.3.0)
F	1.10.1090.10	Mainly Alpha	Orthogonal Bundle	Cytochrome Bc1 Complex	Chain F	CATH (4.3.0)
O [auth R]	1.20.5.270	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Ubiquinol cytochrome reductase, transmembrane domain	CATH (4.3.0)
O [auth R]	2.102.10.10	Mainly Beta	3-layer Sandwich	Rieske Iron-sulfur Protein	Rieske [2Fe-2S] iron-sulphur domain	CATH (4.3.0)
E	1.20.5.270	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Ubiquinol cytochrome reductase, transmembrane domain	CATH (4.3.0)
E	2.102.10.10	Mainly Beta	3-layer Sandwich	Rieske Iron-sulfur Protein	Rieske [2Fe-2S] iron-sulphur domain	CATH (4.3.0)
N [auth Q]	1.10.760.10	Mainly Alpha	Orthogonal Bundle	Cytochrome Bc1 Complex	Chain D, domain 2	CATH (4.3.0)
N [auth Q]	1.20.5.100	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Cytochrome c1, transmembrane anchor, C-terminal	CATH (4.3.0)
D	1.10.760.10	Mainly Alpha	Orthogonal Bundle	Cytochrome Bc1 Complex	Chain D, domain 2	CATH (4.3.0)
D	1.20.5.100	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Cytochrome c1, transmembrane anchor, C-terminal	CATH (4.3.0)
M [auth P]	1.20.810.10	Mainly Alpha	Up-down Bundle	Cytochrome Bc1 Complex	Chain C	CATH (4.3.0)
C	1.20.810.10	Mainly Alpha	Up-down Bundle	Cytochrome Bc1 Complex	Chain C	CATH (4.3.0)
L [auth O]	3.30.830.10	Alpha Beta	2-Layer Sandwich	Cytochrome Bc1 Complex	Chain A, domain 1	CATH (4.3.0)
B	3.30.830.10	Alpha Beta	2-Layer Sandwich	Cytochrome Bc1 Complex	Chain A, domain 1	CATH (4.3.0)
T [auth W]	1.20.5.260	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Cytochrome b-c1 complex subunit 9	CATH (4.3.0)
J	1.20.5.260	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Cytochrome b-c1 complex subunit 9	CATH (4.3.0)
K [auth N]	3.30.830.10	Alpha Beta	2-Layer Sandwich	Cytochrome Bc1 Complex	Chain A, domain 1	CATH (4.3.0)
A	3.30.830.10	Alpha Beta	2-Layer Sandwich	Cytochrome Bc1 Complex	Chain A, domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
G, Q [auth T]	PF02939	UcrQ family (UcrQ)	UcrQ family	-	Family
E, O [auth R]	PF02921	Ubiquinol cytochrome reductase transmembrane region (UCR_TM)	Ubiquinol cytochrome reductase transmembrane region	-	Family
E, O [auth R]	PF00355	Rieske [2Fe-2S] domain (Rieske)	Rieske [2Fe-2S] domain	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 ...	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
C, M [auth P]	PF00032	Cytochrome b(C-terminal)/b6/petD (Cytochrom_B_C)	Cytochrome b(C-terminal)/b6/petD		Domain
C, M [auth P]	PF00033	Cytochrome b/b6/petB (Cytochrome_B)	Cytochrome b/b6/petB		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
I, S [auth V]	Cytochrome b-c1 complex subunit Rieske, mitochondrial	monoatomic cation transmembrane transporter activity proton transmembrane transporter activity oxidoreductase activity, acting on diphenols and related substances as donors primary active transmembrane transporter activity oxidoreductase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity quinol-cytochrome-c reductase activity monoatomic ion transmembrane transporter activity transporter activity catalytic activity transmembrane transporter activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity oxidoreductase activity, acting on diphenols and related substances as donors primary active transmembrane transporter activity oxidoreductase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity quinol-cytochrome-c reductase activity monoatomic ion transmembrane transporter activity transporter activity catalytic activity transmembrane transporter activity iron-sulfur cluster binding 2 iron, 2 sulfur cluster binding binding metal cluster binding small molecule binding	-	membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm organelle membrane
H, R [auth U]	Cytochrome b-c1 complex subunit 6	-	aerobic respiration cellular respiration aerobic electron transport chain oxidative phosphorylation energy derivation by oxidation of organic compounds ATP synthesis coupled electron transport electron transport chain generation of precursor metabolites and energy mitochondrial electron transport, ubiquinol to cytochrome c respiratory electron transport chain metabolic process cellular process mitochondrial ATP synthesis coupled electron transport	membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm organelle membrane respiratory chain complex protein-containing complex catalytic complex cytochrome complex membrane protein complex transporter complex respiratory chain complex III transmembrane transporter complex oxidoreductase complex
G, Q [auth T]	Mitochondrial ubiquinol-cytochrome c reductase ubiquinone-binding protein qp-c	-	developmental process multicellular organismal process head development animal organ development brain development nervous system development cerebellar cortex development multicellular organism development cerebellar Purkinje cell layer development cerebellum development central nervous system development metencephalon development anatomical structure development animal gross anatomical part developmental process developmental process multicellular organismal process head development animal organ development brain development nervous system development cerebellar cortex development multicellular organism development cerebellar Purkinje cell layer development cerebellum development central nervous system development metencephalon development anatomical structure development animal gross anatomical part developmental process hindbrain development system development midbrain development pons development hypothalamus development forebrain development diencephalon development limbic system development aerobic respiration cellular respiration aerobic electron transport chain oxidative phosphorylation energy derivation by oxidation of organic compounds ATP synthesis coupled electron transport electron transport chain generation of precursor metabolites and energy mitochondrial electron transport, ubiquinol to cytochrome c respiratory electron transport chain metabolic process cellular process mitochondrial ATP synthesis coupled electron transport pyramidal neuron development cellular developmental process central nervous system neuron development cell development central nervous system neuron differentiation neurogenesis neuron differentiation cell differentiation forebrain generation of neurons generation of neurons forebrain neuron development neuron development forebrain neuron differentiation pyramidal neuron differentiation subthalamus development thalamus development	membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm organelle membrane respiratory chain complex protein-containing complex catalytic complex cytochrome complex membrane protein complex transporter complex respiratory chain complex III transmembrane transporter complex oxidoreductase complex
F, P [auth S]	Cytochrome b-c1 complex subunit 7	-	aerobic respiration cellular respiration aerobic electron transport chain oxidative phosphorylation energy derivation by oxidation of organic compounds ATP synthesis coupled electron transport electron transport chain generation of precursor metabolites and energy mitochondrial electron transport, ubiquinol to cytochrome c respiratory electron transport chain metabolic process cellular process mitochondrial ATP synthesis coupled electron transport	membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm organelle membrane respiratory chain complex protein-containing complex catalytic complex cytochrome complex membrane protein complex transporter complex respiratory chain complex III transmembrane transporter complex oxidoreductase complex
E, O [auth R]	Cytochrome b-c1 complex subunit Rieske, mitochondrial	oxidoreductase activity catalytic activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity oxidoreductase activity, acting on diphenols and related substances as donors primary active transmembrane transporter activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity quinol-cytochrome-c reductase activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity oxidoreductase activity catalytic activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity oxidoreductase activity, acting on diphenols and related substances as donors primary active transmembrane transporter activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity quinol-cytochrome-c reductase activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity iron-sulfur cluster binding 2 iron, 2 sulfur cluster binding binding metal cluster binding small molecule binding	aerobic respiration cellular respiration aerobic electron transport chain oxidative phosphorylation energy derivation by oxidation of organic compounds ATP synthesis coupled electron transport electron transport chain generation of precursor metabolites and energy mitochondrial electron transport, ubiquinol to cytochrome c respiratory electron transport chain metabolic process cellular process mitochondrial ATP synthesis coupled electron transport	membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm organelle membrane respiratory chain complex protein-containing complex catalytic complex cytochrome complex membrane protein complex transporter complex respiratory chain complex III transmembrane transporter complex oxidoreductase complex
D, N [auth Q]	Mitochondrial cytochrome c1, heme protein	binding tetrapyrrole binding heme binding electron transfer activity	-	membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm organelle membrane respiratory chain complex protein-containing complex catalytic complex cytochrome complex membrane protein complex transporter complex respiratory chain complex III transmembrane transporter complex oxidoreductase complex
C, M [auth P]	Cytochrome b	monoatomic cation transmembrane transporter activity proton transmembrane transporter activity oxidoreductase activity, acting on diphenols and related substances as donors primary active transmembrane transporter activity oxidoreductase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity quinol-cytochrome-c reductase activity monoatomic ion transmembrane transporter activity transporter activity catalytic activity transmembrane transporter activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity oxidoreductase activity, acting on diphenols and related substances as donors primary active transmembrane transporter activity oxidoreductase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity quinol-cytochrome-c reductase activity monoatomic ion transmembrane transporter activity transporter activity catalytic activity transmembrane transporter activity binding tetrapyrrole binding heme binding	aerobic respiration cellular respiration aerobic electron transport chain oxidative phosphorylation energy derivation by oxidation of organic compounds ATP synthesis coupled electron transport electron transport chain generation of precursor metabolites and energy mitochondrial electron transport, ubiquinol to cytochrome c respiratory electron transport chain metabolic process cellular process mitochondrial ATP synthesis coupled electron transport response to oxidative stress aerobic respiration cellular respiration aerobic electron transport chain oxidative phosphorylation energy derivation by oxidation of organic compounds ATP synthesis coupled electron transport electron transport chain generation of precursor metabolites and energy mitochondrial electron transport, ubiquinol to cytochrome c respiratory electron transport chain metabolic process cellular process mitochondrial ATP synthesis coupled electron transport response to oxidative stress response to stimulus response to stress	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle mitochondrial membrane organelle inner membrane membrane mitochondrial inner membrane organelle envelope mitochondrial envelope membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle mitochondrial membrane organelle inner membrane membrane mitochondrial inner membrane organelle envelope mitochondrial envelope organelle membrane respiratory chain complex protein-containing complex catalytic complex cytochrome complex membrane protein complex transporter complex respiratory chain complex III transmembrane transporter complex oxidoreductase complex
B, L [auth O]	Mitochondrial ubiquinol-cytochrome-c reductase complex core protein 2	cation binding ion binding binding metal ion binding small molecule binding	-	membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm organelle membrane respiratory chain complex protein-containing complex catalytic complex cytochrome complex membrane protein complex transporter complex respiratory chain complex III transmembrane transporter complex oxidoreductase complex
J, T [auth W]	Mitochondrial ubiquinol-cytochrome c reductase 7.2 kda protein	-	aerobic respiration cellular respiration aerobic electron transport chain oxidative phosphorylation energy derivation by oxidation of organic compounds ATP synthesis coupled electron transport electron transport chain generation of precursor metabolites and energy mitochondrial electron transport, ubiquinol to cytochrome c respiratory electron transport chain metabolic process cellular process mitochondrial ATP synthesis coupled electron transport	membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm organelle membrane respiratory chain complex protein-containing complex catalytic complex cytochrome complex membrane protein complex transporter complex respiratory chain complex III transmembrane transporter complex oxidoreductase complex
A, K [auth N]	Mitochondrial ubiquinol-cytochrome-c reductase complex core protein i	cation binding ion binding binding metal ion binding small molecule binding	-	membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm organelle membrane respiratory chain complex protein-containing complex catalytic complex cytochrome complex membrane protein complex transporter complex respiratory chain complex III transmembrane transporter complex oxidoreductase complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
I, S [auth V]	IPR017941	Rieske [2Fe-2S] iron-sulphur domain	Domain
I, S [auth V]	IPR005805	Rieske iron-sulphur protein, C-terminal	Domain
I, S [auth V]	IPR036922	Rieske [2Fe-2S] iron-sulphur domain superfamily	Homologous Superfamily
I, S [auth V]	IPR037008	Cytochrome bc1 complex subunit Rieske, transmembrane domain superfamily	Homologous Superfamily
I, S [auth V]	IPR014349	Rieske iron-sulphur protein	Family
I, S [auth V]	IPR006317	Ubiquinol-cytochrome c reductase, iron-sulphur subunit	Domain
I, S [auth V]	IPR011070	Globular protein, non-globular alpha/beta subunit	Homologous Superfamily
I, S [auth V]	IPR004192	Cytochrome b-c1 complex subunit Rieske, transmembrane domain	Domain
I, S [auth V]	IPR015248	Ubiquinol-cytochrome c reductase iron-sulphur subunit, N-terminal	Domain
H, R [auth U]	IPR003422	Cytochrome b-c1 complex, subunit 6	Family
H, R [auth U]	IPR023184	Ubiquinol-cytochrome C reductase hinge domain	Domain
H, R [auth U]	IPR036811	Ubiquinol-cytochrome C reductase hinge domain superfamily	Homologous Superfamily
G, Q [auth T]	IPR004205	Cytochrome b-c1 complex subunit 8	Family
G, Q [auth T]	IPR036642	Cytochrome b-c1 complex subunit 8 superfamily	Homologous Superfamily
F, P [auth S]	IPR003197	Cytochrome b-c1 complex subunit 7	Family
F, P [auth S]	IPR036544	Cytochrome b-c1 complex subunit 7 superfamily	Homologous Superfamily
E, O [auth R]	IPR036922	Rieske [2Fe-2S] iron-sulphur domain superfamily	Homologous Superfamily
E, O [auth R]	IPR014349	Rieske iron-sulphur protein	Family
E, O [auth R]	IPR011070	Globular protein, non-globular alpha/beta subunit	Homologous Superfamily
E, O [auth R]	IPR004192	Cytochrome b-c1 complex subunit Rieske, transmembrane domain	Domain
E, O [auth R]	IPR015248	Ubiquinol-cytochrome c reductase iron-sulphur subunit, N-terminal	Domain
E, O [auth R]	IPR017941	Rieske [2Fe-2S] iron-sulphur domain	Domain
E, O [auth R]	IPR005805	Rieske iron-sulphur protein, C-terminal	Domain
E, O [auth R]	IPR037008	Cytochrome bc1 complex subunit Rieske, transmembrane domain superfamily	Homologous Superfamily
E, O [auth R]	IPR006317	Ubiquinol-cytochrome c reductase, iron-sulphur subunit	Domain
D, N [auth Q]	IPR036909	Cytochrome c-like domain superfamily	Homologous Superfamily
D, N [auth Q]	IPR002326	Cytochrome c1	Family
D, N [auth Q]	IPR009056	Cytochrome c-like domain	Domain
D, N [auth Q]	IPR021157	Cytochrome c1, transmembrane anchor, C-terminal	Homologous Superfamily
C, M [auth P]	IPR036150	Cytochrome b/b6, C-terminal domain superfamily	Homologous Superfamily
C, M [auth P]	IPR027387	Cytochrome b/b6-like domain superfamily	Homologous Superfamily
C, M [auth P]	IPR048260	Cytochrome b/b6, C-terminal domain, eukaryotic/bacterial	Domain
C, M [auth P]	IPR016174	Di-haem cytochrome, transmembrane	Homologous Superfamily
C, M [auth P]	IPR005798	Cytochrome b/b6, C-terminal	Domain
C, M [auth P]	IPR048259	Cytochrome b/b6, N-terminal domain, eukaryotic/bacterial	Domain
C, M [auth P]	IPR030689	Cytochrome b	Family
C, M [auth P]	IPR005797	Cytochrome b/b6, N-terminal domain	Domain
B, L [auth O]	IPR007863	Peptidase M16, C-terminal	Domain
B, L [auth O]	IPR011765	Peptidase M16, N-terminal	Domain
B, L [auth O]	IPR011249	Metalloenzyme, LuxS/M16 peptidase-like	Homologous Superfamily
B, L [auth O]	IPR050361	Mitochondrial Processing Peptidase/Ubiquinol-cytochrome c Reductase Complex	Family
J, T [auth W]	IPR008027	Cytochrome b-c1 complex subunit 9	Family
J, T [auth W]	IPR036656	Cytochrome b-c1 complex subunit 9 superfamily	Homologous Superfamily
A, K [auth N]	IPR007863	Peptidase M16, C-terminal	Domain
A, K [auth N]	IPR011765	Peptidase M16, N-terminal	Domain
A, K [auth N]	IPR011249	Metalloenzyme, LuxS/M16 peptidase-like	Homologous Superfamily
A, K [auth N]	IPR050361	Mitochondrial Processing Peptidase/Ubiquinol-cytochrome c Reductase Complex	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K [auth N], L [auth O], M [auth P], N [auth Q], O [auth R], P [auth S], Q [auth T], R [auth U], S [auth V], T [auth W]	OPM	Transmembrane	Alpha-helical polytopic	Electron transport chain complex III (bc1 and b6f) superfamily	Cytochrome bc1 and b6f complexes

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K [auth N], L [auth O], M [auth P], N [auth Q], O [auth R], P [auth S], Q [auth T], R [auth U], S [auth V], T [auth W]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K [auth N], L [auth O], M [auth P], N [auth Q], O [auth R], P [auth S], Q [auth T], R [auth U], S [auth V], T [auth W]	MemProtMD	Annotated as membrane protein by MemProtMD

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
I, S [auth V]	AME	Parent Component: MET
I, S [auth V]	UNK
C, M [auth P]	FME	Parent Component: MET : AA0021 , AA0566 : N-formyl-L-methionine residue MOD:00030 , N-formyl-L-methionine (Met) MOD:00482 , N-[(L-histidin-1'-yl)methyl]-L-methionine (fMet) MOD:01890 , N-[(L-histidin-1'-yl)methyl]-L-methionine (Met) MOD:01891