Annotations: 7RJB

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
D [auth G]	SCOP2B Superfamily	14 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8104325	3000797	SCOP2B (2022-06-29)
E [auth F]	SCOP2B Superfamily	Ubiquinone-binding protein QP-C of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8104193	3000770	SCOP2B (2022-06-29)
F [auth H]	SCOP2B Superfamily	Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8104195	3000806	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)
A	Peptidase_M16_C	e7rjbA2	A: a+b two layers	X: LuxS, MPP, ThrRS/AlaRS common domain	H: LuxS, MPP, ThrRS/AlaRS common domain	T: LuxS/MPP-like metallohydrolase	F: Peptidase_M16_C	ECOD (1.6)
A	Peptidase_M16	e7rjbA1	A: a+b two layers	X: LuxS, MPP, ThrRS/AlaRS common domain	H: LuxS, MPP, ThrRS/AlaRS common domain	T: LuxS/MPP-like metallohydrolase	F: Peptidase_M16	ECOD (1.6)
B [auth K]	Cytochrom_B_C	e7rjbK2	A: alpha bundles	X: 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_C	ECOD (1.6)
B [auth K]	Cytochrome_B	e7rjbK1	A: alpha bundles	X: Transmembrane heme-binding four-helical bundle (From Homology)	H: Transmembrane heme-binding four-helical bundle	T: Transmembrane di-heme cytochromes	F: Cytochrome_B	ECOD (1.6)
C [auth D]	Cytochrom_C1_C,Cytochrom_C1_N	e7rjbD1	A: alpha arrays	X: Cytochrome c-like	H: Cytochrome c (From Topology)	T: Cytochrome c	F: Cytochrom_C1_C,Cytochrom_C1_N	ECOD (1.6)
D [auth G]	UCR_14kD	e7rjbG1	A: alpha arrays	X: 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_14kD	ECOD (1.6)
E [auth F]	UcrQ	e7rjbF1	A: extended segments	X: 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: UcrQ	ECOD (1.6)
F [auth H]	UCR_hinge	e7rjbH1	A: alpha bundles	X: cytochrome bc1 complex 11 kDa protein-like	H: 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_hinge	ECOD (1.6)
G [auth I]	UCR_UQCRX_QCR9	e7rjbI1	A: extended segments	X: 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_QCR9	ECOD (1.6)
H [auth B]	Peptidase_M16_C	e7rjbB2	A: a+b two layers	X: LuxS, MPP, ThrRS/AlaRS common domain	H: LuxS, MPP, ThrRS/AlaRS common domain	T: LuxS/MPP-like metallohydrolase	F: Peptidase_M16_C	ECOD (1.6)
H [auth B]	Peptidase_M16	e7rjbB1	A: a+b two layers	X: LuxS, MPP, ThrRS/AlaRS common domain	H: LuxS, MPP, ThrRS/AlaRS common domain	T: LuxS/MPP-like metallohydrolase	F: Peptidase_M16	ECOD (1.6)
I [auth M]	UCR_TM	e7rjbM1	A: extended segments	X: iron-sulfur subunit (ISP) transmembrane anchor (From Topology)	H: iron-sulfur subunit (ISP) transmembrane anchor (From Topology)	T: iron-sulfur subunit (ISP) transmembrane anchor	F: UCR_TM	ECOD (1.6)
J [auth E]	Rieske_cytochrome_bc1	e7rjbE1	A: beta sandwiches	X: ISP domain (From Topology)	H: ISP domain (From Topology)	T: ISP domain	F: Rieske_cytochrome_bc1	ECOD (1.6)
J [auth E]	Rieske_6	e7rjbE2	A: few secondary structure elements	X: Trm112p-like (From Topology)	H: Trm112p-like (From Topology)	T: Trm112p-like	F: Rieske_6	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF05193	Peptidase M16 inactive domain (Peptidase_M16_C)	Peptidase M16 inactive domain	Peptidase 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
A	PF00675	Insulinase (Peptidase family M16) (Peptidase_M16)	Insulinase (Peptidase family M16)	-	Family
B [auth K]	PF00032	Cytochrome b(C-terminal)/b6/petD (Cytochrom_B_C)	Cytochrome b(C-terminal)/b6/petD	-	Domain
B [auth K]	PF00033	Cytochrome b/b6/petB (Cytochrome_B)	Cytochrome b/b6/petB	-	Domain
C [auth D]	PF02167	Cytochrome C1 family (Cytochrom_C1)	Cytochrome C1 family	-	Family
D [auth G]	PF02271	Ubiquinol-cytochrome C reductase complex 14kD subunit (UCR_14kD)	Ubiquinol-cytochrome C reductase complex 14kD subunit	-	Family
E [auth F]	PF02939	UcrQ family (UcrQ)	UcrQ family	-	Family
F [auth H]	PF02320	Ubiquinol-cytochrome C reductase hinge protein (UCR_hinge)	Ubiquinol-cytochrome C reductase hinge protein	-	Family
G [auth I]	PF05365	Ubiquinol-cytochrome C reductase, UQCRX/QCR9 like (UCR_UQCRX_QCR9)	Ubiquinol-cytochrome C reductase, UQCRX/QCR9 like	-	Family
H [auth B]	PF05193	Peptidase M16 inactive domain (Peptidase_M16_C)	Peptidase M16 inactive domain	Peptidase 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
H [auth B]	PF00675	Insulinase (Peptidase family M16) (Peptidase_M16)	Insulinase (Peptidase family M16)	-	Family
I [auth M], J [auth E]	PF02921	Ubiquinol cytochrome reductase transmembrane region (UCR_TM)	Ubiquinol cytochrome reductase transmembrane region	-	Family
I [auth M], J [auth E]	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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Ubiquinol--cytochrome-c reductase subunit	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 inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity ubiquinol-cytochrome-c reductase 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 oxidoreductase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity ubiquinol-cytochrome-c reductase activity catalytic activity transmembrane transporter activity cation binding ion binding binding metal ion binding small molecule binding peptidase activity catalytic activity, acting on a protein metalloendopeptidase activity hydrolase activity metallopeptidase activity endopeptidase activity	protein localization establishment of protein localization cellular localization cellular biosynthetic process protein targeting protein processing involved in protein targeting to mitochondrion protein maturation localization organic substance metabolic process proteolysis cellular macromolecule localization organic substance biosynthetic process protein metabolic process organonitrogen compound metabolic process protein localization establishment of protein localization cellular localization cellular biosynthetic process protein targeting protein processing involved in protein targeting to mitochondrion protein maturation localization organic substance metabolic process proteolysis cellular macromolecule localization organic substance biosynthetic process protein metabolic process organonitrogen compound metabolic process cellular metabolic process primary metabolic process gene expression establishment of localization macromolecule biosynthetic process establishment of protein localization to organelle mitochondrial protein processing biosynthetic process macromolecule localization protein localization to organelle protein localization to mitochondrion protein targeting to mitochondrion protein processing cellular process metabolic process macromolecule metabolic process establishment of protein localization to mitochondrion 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 mitochondrial ATP synthesis coupled electron transport	membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle respiratory chain complex protein-containing complex mitochondrial respiratory chain complex III mitochondrial membrane organelle inner membrane cytochrome complex membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle respiratory chain complex protein-containing complex mitochondrial respiratory chain complex III mitochondrial membrane organelle inner membrane cytochrome complex mitochondrial respirasome membrane protein complex transporter complex respiratory chain complex III organelle envelope oxidoreductase complex mitochondrial protein-containing complex catalytic complex membrane mitochondrial inner membrane inner mitochondrial membrane protein complex transmembrane transporter complex mitochondrial envelope respirasome organelle membrane
B [auth K]	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 inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity ubiquinol-cytochrome-c reductase 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 oxidoreductase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity ubiquinol-cytochrome-c reductase activity catalytic activity transmembrane transporter activity cation binding ion binding binding metal ion binding small molecule binding	aerobic respiration cellular respiration aerobic electron transport chain oxidative phosphorylation energy derivation by oxidation of organic compounds cellular metabolic process 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 respiratory chain complex protein-containing complex mitochondrial respiratory chain complex III mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion cytochrome complex mitochondrial respirasome membrane protein complex transporter complex respiratory chain complex III intracellular organelle membrane-bounded organelle respiratory chain complex protein-containing complex mitochondrial respiratory chain complex III mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion cytochrome complex mitochondrial respirasome membrane protein complex transporter complex respiratory chain complex III intracellular organelle organelle envelope oxidoreductase complex mitochondrial protein-containing complex catalytic complex membrane cellular anatomical entity intracellular membrane-bounded organelle mitochondrial inner membrane inner mitochondrial membrane protein complex transmembrane transporter complex mitochondrial envelope organelle respirasome cytoplasm organelle membrane protein-DNA complex chromatin chromosome heterochromatin intracellular non-membrane-bounded organelle non-membrane-bounded organelle
C [auth D]	Ubiquinol--cytochrome-c reductase catalytic subunit	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 inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity ubiquinol-cytochrome-c reductase 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 oxidoreductase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity ubiquinol-cytochrome-c reductase activity catalytic activity transmembrane transporter activity binding organic cyclic compound binding tetrapyrrole binding heme binding cation binding ion binding metal ion binding small molecule binding	aerobic respiration cellular respiration aerobic electron transport chain oxidative phosphorylation energy derivation by oxidation of organic compounds cellular metabolic process 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	cell periphery plasma membrane membrane cellular anatomical entity membrane-bounded organelle respiratory chain complex protein-containing complex mitochondrial respiratory chain complex III mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion cytochrome complex mitochondrial respirasome cell periphery plasma membrane membrane cellular anatomical entity membrane-bounded organelle respiratory chain complex protein-containing complex mitochondrial respiratory chain complex III mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion cytochrome complex mitochondrial respirasome membrane protein complex transporter complex respiratory chain complex III intracellular organelle organelle envelope oxidoreductase complex mitochondrial protein-containing complex catalytic complex intracellular membrane-bounded organelle mitochondrial inner membrane inner mitochondrial membrane protein complex transmembrane transporter complex mitochondrial envelope organelle respirasome cytoplasm organelle membrane
D [auth G]	Cytochrome b-c1 complex subunit 7	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 inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity ubiquinol-cytochrome-c reductase 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 oxidoreductase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity ubiquinol-cytochrome-c reductase activity catalytic activity transmembrane transporter activity	aerobic respiration cellular respiration aerobic electron transport chain oxidative phosphorylation energy derivation by oxidation of organic compounds cellular metabolic process 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 aerobic respiration cellular respiration aerobic electron transport chain oxidative phosphorylation energy derivation by oxidation of organic compounds cellular metabolic process 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 cytochrome complex assembly protein-containing complex organization mitochondrial respiratory chain complex III assembly cellular component organization cellular component biogenesis organelle organization cellular component assembly respiratory chain complex III assembly mitochondrial respiratory chain complex assembly protein-containing complex assembly cellular component organization or biogenesis mitochondrion organization regulation of growth regulation of biological process regulation of filamentous growth growth biological regulation filamentous growth	cell periphery plasma membrane membrane cellular anatomical entity membrane-bounded organelle respiratory chain complex protein-containing complex mitochondrial respiratory chain complex III mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion cytochrome complex mitochondrial respirasome cell periphery plasma membrane membrane cellular anatomical entity membrane-bounded organelle respiratory chain complex protein-containing complex mitochondrial respiratory chain complex III mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion cytochrome complex mitochondrial respirasome membrane protein complex transporter complex respiratory chain complex III intracellular organelle organelle envelope oxidoreductase complex mitochondrial protein-containing complex catalytic complex intracellular membrane-bounded organelle mitochondrial inner membrane inner mitochondrial membrane protein complex transmembrane transporter complex mitochondrial envelope organelle respirasome cytoplasm organelle membrane side of membrane lumenal side of membrane matrix side of mitochondrial inner membrane
E [auth F]	Ubiquinol--cytochrome-c reductase subunit 8	-	aerobic respiration cellular respiration aerobic electron transport chain oxidative phosphorylation energy derivation by oxidation of organic compounds cellular metabolic process 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	cell periphery plasma membrane membrane cellular anatomical entity membrane-bounded organelle respiratory chain complex protein-containing complex mitochondrial respiratory chain complex III mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion cytochrome complex mitochondrial respirasome cell periphery plasma membrane membrane cellular anatomical entity membrane-bounded organelle respiratory chain complex protein-containing complex mitochondrial respiratory chain complex III mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion cytochrome complex mitochondrial respirasome membrane protein complex transporter complex respiratory chain complex III intracellular organelle organelle envelope oxidoreductase complex mitochondrial protein-containing complex catalytic complex intracellular membrane-bounded organelle mitochondrial inner membrane inner mitochondrial membrane protein complex transmembrane transporter complex mitochondrial envelope organelle respirasome cytoplasm organelle membrane
F [auth H]	Ubiquinol--cytochrome-c reductase subunit 6	-	aerobic respiration cellular respiration aerobic electron transport chain oxidative phosphorylation energy derivation by oxidation of organic compounds cellular metabolic process 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 respiratory chain complex protein-containing complex mitochondrial respiratory chain complex III mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion cytochrome complex mitochondrial respirasome membrane protein complex transporter complex respiratory chain complex III intracellular organelle membrane-bounded organelle respiratory chain complex protein-containing complex mitochondrial respiratory chain complex III mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion cytochrome complex mitochondrial respirasome membrane protein complex transporter complex respiratory chain complex III intracellular organelle organelle envelope oxidoreductase complex mitochondrial protein-containing complex catalytic complex membrane cellular anatomical entity intracellular membrane-bounded organelle mitochondrial inner membrane inner mitochondrial membrane protein complex transmembrane transporter complex mitochondrial envelope organelle respirasome cytoplasm organelle membrane
G [auth I]	Ubiquinol--cytochrome-c reductase subunit 9	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 inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity ubiquinol-cytochrome-c reductase 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 oxidoreductase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity ubiquinol-cytochrome-c reductase activity catalytic activity transmembrane transporter activity	aerobic respiration cellular respiration aerobic electron transport chain oxidative phosphorylation energy derivation by oxidation of organic compounds cellular metabolic process 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 aerobic respiration cellular respiration aerobic electron transport chain oxidative phosphorylation energy derivation by oxidation of organic compounds cellular metabolic process 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 cytochrome complex assembly protein-containing complex organization mitochondrial respiratory chain complex III assembly cellular component organization cellular component biogenesis organelle organization cellular component assembly respiratory chain complex III assembly mitochondrial respiratory chain complex assembly protein-containing complex assembly cellular component organization or biogenesis mitochondrion organization	cell periphery plasma membrane membrane cellular anatomical entity membrane-bounded organelle respiratory chain complex protein-containing complex mitochondrial respiratory chain complex III mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion cytochrome complex mitochondrial respirasome cell periphery plasma membrane membrane cellular anatomical entity membrane-bounded organelle respiratory chain complex protein-containing complex mitochondrial respiratory chain complex III mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion cytochrome complex mitochondrial respirasome membrane protein complex transporter complex respiratory chain complex III intracellular organelle organelle envelope oxidoreductase complex mitochondrial protein-containing complex catalytic complex intracellular membrane-bounded organelle mitochondrial inner membrane inner mitochondrial membrane protein complex transmembrane transporter complex mitochondrial envelope organelle respirasome cytoplasm organelle membrane
H [auth B]	Cytochrome b-c1 complex subunit 2, 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 inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity ubiquinol-cytochrome-c reductase 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 oxidoreductase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity ubiquinol-cytochrome-c reductase activity catalytic activity transmembrane transporter activity cation binding ion binding binding metal ion binding small molecule binding	aerobic respiration cellular respiration aerobic electron transport chain oxidative phosphorylation energy derivation by oxidation of organic compounds cellular metabolic process 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 intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle cell periphery plasma membrane membrane mitochondrial membrane organelle inner membrane mitochondrial inner membrane membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle cell periphery plasma membrane membrane mitochondrial membrane organelle inner membrane mitochondrial inner membrane organelle envelope mitochondrial envelope mitochondrial crista organelle membrane respiratory chain complex protein-containing complex mitochondrial respiratory chain complex III cytochrome complex mitochondrial respirasome membrane protein complex transporter complex respiratory chain complex III oxidoreductase complex mitochondrial protein-containing complex catalytic complex inner mitochondrial membrane protein complex transmembrane transporter complex respirasome
I [auth M], J [auth E]	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 inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity 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 inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity ubiquinol-cytochrome-c reductase activity transmembrane transporter activity iron-sulfur cluster binding 2 iron, 2 sulfur cluster binding binding metal cluster binding small molecule binding cation binding ion binding metal ion binding	aerobic respiration cellular respiration aerobic electron transport chain oxidative phosphorylation energy derivation by oxidation of organic compounds cellular metabolic process 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 respiratory chain complex protein-containing complex mitochondrial respiratory chain complex III mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion cytochrome complex mitochondrial respirasome membrane protein complex transporter complex respiratory chain complex III intracellular organelle membrane-bounded organelle respiratory chain complex protein-containing complex mitochondrial respiratory chain complex III mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion cytochrome complex mitochondrial respirasome membrane protein complex transporter complex respiratory chain complex III intracellular organelle organelle envelope oxidoreductase complex mitochondrial protein-containing complex catalytic complex membrane cellular anatomical entity intracellular membrane-bounded organelle mitochondrial inner membrane inner mitochondrial membrane protein complex transmembrane transporter complex mitochondrial envelope organelle respirasome cytoplasm organelle membrane cell periphery plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

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

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B [auth K], C [auth D], D [auth G], E [auth F] A, B [auth K], C [auth D], D [auth G], E [auth F], F [auth H], G [auth I], H [auth B], I [auth M], J [auth E]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B [auth K], C [auth D], D [auth G], E [auth F] A, B [auth K], C [auth D], D [auth G], E [auth F], F [auth H], G [auth I], H [auth B], I [auth M], J [auth E]	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B [auth K], C [auth D], D [auth G], E [auth F] A, B [auth K], C [auth D], D [auth G], E [auth F], F [auth H], G [auth I], H [auth B], I [auth M], J [auth E]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Electron Transport Chain Complexes: Complex III (Cytochrome bc₁)	Complex III₂ (Cytochrome bc1 homodimer), inhibitor free