1L0N

native structure of bovine mitochondrial cytochrome bc1 complex

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
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: PDBTM
Membrane Protein Annotation: MemProtMD

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d1l0nb1	Alpha and beta proteins (a+b)	LuxS/MPP-like metallohydrolase	LuxS/MPP-like metallohydrolase	MPP-like	Cytochrome bc1 core subunit 2	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
D	d1l0nd1	All alpha proteins	Cytochrome c	Cytochrome c	Cytochrome bc1 domain	Cytochrome bc1 domain	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
D	d1l0nd2	Membrane and cell surface proteins and peptides	Single transmembrane helix	Cytochrome c1 subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase), transmembrane anchor	Cytochrome c1 subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase), transmembrane anchor	Cytochrome c1 subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase), transmembrane anchor	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
G	d1l0ng_	Membrane and cell surface proteins and peptides	Single transmembrane helix	Ubiquinone-binding protein QP-C of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	Ubiquinone-binding protein QP-C of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	Ubiquinone-binding protein QP-C of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
H	d1l0nh_	Membrane and cell surface proteins and peptides	Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
J	d1l0nj_	Membrane and cell surface proteins and peptides	Single transmembrane helix	Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
A	d1l0na1	Alpha and beta proteins (a+b)	LuxS/MPP-like metallohydrolase	LuxS/MPP-like metallohydrolase	MPP-like	Cytochrome bc1 core subunit 1	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
K	d1l0nk_	Membrane and cell surface proteins and peptides	Single transmembrane helix	Subunit XI (6.4 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	Subunit XI (6.4 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	Subunit XI (6.4 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
C	d1l0nc2	Membrane and cell surface proteins and peptides	Heme-binding four-helical bundle	Transmembrane di-heme cytochromes	Cytochrome b of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	Mitochondrial cytochrome b subunit, N-terminal domain	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
C	d1l0nc1	Membrane and cell surface proteins and peptides	a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	Mitochondrial cytochrome b subunit, C-terminal domain	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
E	d1l0ne1	All beta proteins	ISP domain	ISP domain	Rieske iron-sulfur protein (ISP)	ISP subunit of the mitochondrial cytochrome bc1-complex, water-soluble domain	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
E	d1l0ne2	Membrane and cell surface proteins and peptides	Single transmembrane helix	ISP transmembrane anchor	ISP transmembrane anchor	Iron-sulfur subunit (ISP) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase), transmembrane region	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
F	d1l0nf_	Membrane and cell surface proteins and peptides	14 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	14 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	14 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	14 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
I	d1l0ni_	Alpha and beta proteins (a+b)	Non-globular alpha+beta subunits of globular proteins	Non-globular alpha+beta subunits of globular proteins	Ubiquinol-cytochrome c reductase 8 kDa protein	Ubiquinol-cytochrome c reductase 8 kDa protein	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	LuxS/MPP-like metallohydrolase	8038263	3001831	SCOP2B (2021-05-27)
B	SCOP2B Superfamily	LuxS/MPP-like metallohydrolase	8038260	3001831	SCOP2B (2021-05-27)
D	SCOP2B Superfamily	Cytochrome c1 subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) transmembrane anchor	8038268	3000762	SCOP2B (2021-05-27)
D	SCOP2B Superfamily	Cytochrome c	8038266	3000815	SCOP2B (2021-05-27)
G	SCOP2B Superfamily	Ubiquinone-binding protein QP-C of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8038274	3000770	SCOP2B (2021-05-27)
H	SCOP2B Superfamily	Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8038275	3000806	SCOP2B (2021-05-27)
J	SCOP2B Superfamily	Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8037844	3000779	SCOP2B (2021-05-27)
A	SCOP2B Superfamily	LuxS/MPP-like metallohydrolase	8038258	3001831	SCOP2B (2021-05-27)
A	SCOP2B Superfamily	LuxS/MPP-like metallohydrolase	8038259	3001831	SCOP2B (2021-05-27)
K	SCOP2B Superfamily	Subunit XI (6.4 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8032884	3000787	SCOP2B (2021-05-27)
C	SCOP2B Superfamily	Transmembrane di-heme cytochromes	8038265	3000517	SCOP2B (2021-05-27)
C	SCOP2B Superfamily	a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8038264	3000966	SCOP2B (2021-05-27)
E	SCOP2B Superfamily	ISP domain	8038267	3000233	SCOP2B (2021-05-27)
E	SCOP2B Superfamily	ISP transmembrane anchor	8038269	3000753	SCOP2B (2021-05-27)
F	SCOP2B Superfamily	14 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8038272	3000797	SCOP2B (2021-05-27)
I	SCOP2B Superfamily	Non-globular alpha+beta subunits of globular proteins	8041511	3001542	SCOP2B (2021-05-27)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	PF00675	e1l0nB1	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: PF00675	ECOD (1.6)
B	PF05193	e1l0nB2	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: PF05193	ECOD (1.6)
D	PF02167	e1l0nD1	A: alpha arrays	X: Cytochrome c-like	H: Cytochrome c (From Topology)	T: Cytochrome c	F: PF02167	ECOD (1.6)
D	F_UNCLASSIFIED	e1l0nD2	A: extended segments	X: cytochrome c1 transmembrane anchor (From Topology)	H: cytochrome c1 transmembrane anchor (From Topology)	T: cytochrome c1 transmembrane anchor	F: F_UNCLASSIFIED	ECOD (1.6)
G	PF02939	e1l0nG1	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: PF02939	ECOD (1.6)
H	PF02320	e1l0nH1	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: PF02320	ECOD (1.6)
J	PF05365	e1l0nJ1	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: PF05365	ECOD (1.6)
A	PF00675,PF05193	e1l0nA1	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: PF00675,PF05193	ECOD (1.6)
A	PF05193	e1l0nA2	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: PF05193	ECOD (1.6)
K	PF08997	e1l0nK1	A: extended segments	X: Subunit XI (6.4 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) (From Topology)	H: Subunit XI (6.4 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) (From Topology)	T: Subunit XI (6.4 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	F: PF08997	ECOD (1.6)
C	PF00032	e1l0nC1	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: PF00032	ECOD (1.6)
C	PF00033	e1l0nC2	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: PF00033	ECOD (1.6)
E	PF00355	e1l0nE3	A: beta sandwiches	X: ISP domain (From Topology)	H: ISP domain (From Topology)	T: ISP domain	F: PF00355	ECOD (1.6)
E	PF02921	e1l0nE2	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: PF02921	ECOD (1.6)
F	PF02271	e1l0nF1	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: PF02271	ECOD (1.6)
I	PF09165	e1l0nI1	A: extended segments	X: 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 protein	F: PF09165	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.30.830.10	Alpha Beta	2-Layer Sandwich	Cytochrome Bc1 Complex	Chain A, domain 1	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)
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)
H	1.10.287.20	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Ubiquinol-cytochrome C reductase hinge domain	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)
A	3.30.830.10	Alpha Beta	2-Layer Sandwich	Cytochrome Bc1 Complex	Chain A, domain 1	CATH (4.3.0)
K	1.20.5.220	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces		CATH (4.3.0)
C	1.20.810.10	Mainly Alpha	Up-down Bundle	Cytochrome Bc1 Complex	Chain C	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)
F	1.10.1090.10	Mainly Alpha	Orthogonal Bundle	Cytochrome Bc1 Complex	Chain F	CATH (4.3.0)
I	2.10.210.10	Mainly Beta	Ribbon	Cytochrome Bc1 Complex	Chain I	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
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
B	PF00675	Insulinase (Peptidase family M16) (Peptidase_M16)	Insulinase (Peptidase family M16)	-	Family
D	PF02167	Cytochrome C1 family (Cytochrom_C1)	Cytochrome C1 family	-	Family
G	PF02939	UcrQ family (UcrQ)	UcrQ family	-	Family
H	PF02320	Ubiquinol-cytochrome C reductase hinge protein (UCR_hinge)	Ubiquinol-cytochrome C reductase hinge protein	-	Family
J	PF05365	Ubiquinol-cytochrome C reductase, UQCRX/QCR9 like (UCR_UQCRX_QCR9)	Ubiquinol-cytochrome C reductase, UQCRX/QCR9 like	-	Family
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
K	PF08997	Ubiquinol-cytochrome C reductase complex, 6.4kD protein (UCR_6-4kD)	Ubiquinol-cytochrome C reductase complex, 6.4kD protein	The ubiquinol-cytochrome C reductase complex (cytochrome bc1 complex) is an essential component of the mitochondrial cellular respiratory chain. This family represents the 6.4kD protein, which may be closely linked to the iron-sulphur protein in the ...	The ubiquinol-cytochrome C reductase complex (cytochrome bc1 complex) is an essential component of the mitochondrial cellular respiratory chain. This family represents the 6.4kD protein, which may be closely linked to the iron-sulphur protein in the complex and function as an iron-sulphur protein binding factor [1].	Domain
C	PF00032	Cytochrome b(C-terminal)/b6/petD (Cytochrom_B_C)	Cytochrome b(C-terminal)/b6/petD	-	Domain
C	PF00033	Cytochrome b/b6/petB (Cytochrome_B)	Cytochrome b/b6/petB	-	Domain
E	PF02921	Ubiquinol cytochrome reductase transmembrane region (UCR_TM)	Ubiquinol cytochrome reductase transmembrane region	-	Family
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
F	PF02271	Ubiquinol-cytochrome C reductase complex 14kD subunit (UCR_14kD)	Ubiquinol-cytochrome C reductase complex 14kD subunit	-	Family
I	PF09165	Ubiquinol-cytochrome c reductase 8 kDa, N-terminal (Ubiq-Cytc-red_N)	Ubiquinol-cytochrome c reductase 8 kDa, N-terminal	Members 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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	UBIQUINOL-CYTOCHROME C REDUCTASE COMPLEX CORE PROTEIN 2	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 catalytic activity endopeptidase activity	organonitrogen compound metabolic process proteolysis metabolic process primary metabolic process protein metabolic process macromolecule metabolic process	membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle mitochondrial membrane organelle inner membrane membrane mitochondrial inner membrane organelle envelope mitochondrial envelope membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle mitochondrial membrane organelle inner membrane membrane mitochondrial inner membrane organelle envelope mitochondrial envelope organelle membrane protein-containing complex respirasome membrane protein complex
D	Cytochrome c1, heme protein	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	membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle mitochondrial membrane organelle inner membrane membrane mitochondrial inner membrane organelle envelope mitochondrial envelope membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity 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 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
G	Ubiquinol-cytochrome C reductase complex ubiquinone-binding protein QP-C	-	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 intracellular anatomical structure mitochondrial membrane 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 intracellular anatomical structure mitochondrial membrane 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 organelle mitochondrial envelope respirasome cytoplasm organelle membrane
H	Ubiquinol-cytochrome C reductase complex 11 kDa protein	-	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 intracellular anatomical structure mitochondrial membrane 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 intracellular anatomical structure mitochondrial membrane 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 organelle mitochondrial envelope respirasome cytoplasm organelle membrane
J	Ubiquinol-cytochrome C reductase complex 7.2 kDa protein	-	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 intracellular anatomical structure mitochondrial membrane 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 intracellular anatomical structure mitochondrial membrane 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 organelle mitochondrial envelope respirasome cytoplasm organelle membrane
A	UBIQUINOL-CYTOCHROME C REDUCTASE COMPLEX CORE PROTEIN I	cation binding ion binding binding metal ion binding small molecule binding	-	membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle mitochondrial membrane organelle inner membrane membrane mitochondrial inner membrane organelle envelope mitochondrial envelope membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle mitochondrial membrane organelle inner membrane membrane mitochondrial inner membrane organelle envelope mitochondrial envelope organelle membrane protein-containing complex respirasome membrane protein complex
K	cytochrome b-c1 complex 6.4K protein	-	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 mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane cellular anatomical entity intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope mitochondrial envelope organelle cytoplasm membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane cellular anatomical entity intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope mitochondrial envelope organelle cytoplasm 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
C	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 binding organic cyclic compound binding tetrapyrrole binding heme binding quinone binding ubiquinone 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 cellular anatomical entity membrane-bounded organelle respiratory chain complex protein-containing complex mitochondrial respiratory chain complex III intracellular anatomical structure mitochondrial membrane organelle inner membrane mitochondrion cytochrome complex mitochondrial respirasome membrane protein complex transporter complex membrane cellular anatomical entity membrane-bounded organelle respiratory chain complex protein-containing complex mitochondrial respiratory chain complex III intracellular anatomical structure mitochondrial membrane 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 organelle mitochondrial envelope respirasome cytoplasm organelle membrane
E	UBIQUINOL-CYTOCHROME C REDUCTASE IRON-SULFUR SUBUNIT	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 intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle mitochondrial membrane organelle inner membrane membrane mitochondrial inner membrane organelle envelope mitochondrial envelope membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity 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 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 cell periphery plasma membrane
F	Ubiquinol-cytochrome C reductase complex 14 kDa protein	-	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 intracellular anatomical structure mitochondrial membrane 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 intracellular anatomical structure mitochondrial membrane 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 organelle mitochondrial envelope respirasome cytoplasm organelle membrane
I	UBIQUINOL-CYTOCHROME C REDUCTASE 8 KDA PROTEIN	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 intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle mitochondrial membrane organelle inner membrane membrane mitochondrial inner membrane organelle envelope mitochondrial envelope membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity 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 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 cell periphery plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR007863	Peptidase M16, C-terminal	Domain
B	IPR011765	Peptidase M16, N-terminal	Domain
B	IPR011249	Metalloenzyme, LuxS/M16 peptidase-like	Homologous Superfamily
B	IPR001431	Peptidase M16, zinc-binding site	Binding Site
D	IPR036909	Cytochrome c-like domain superfamily	Homologous Superfamily
D	IPR002326	Cytochrome c1	Family
D	IPR009056	Cytochrome c-like domain	Domain
D	IPR021157	Cytochrome c1, transmembrane anchor, C-terminal	Homologous Superfamily
G	IPR004205	Cytochrome b-c1 complex subunit 8	Family
G	IPR036642	Cytochrome b-c1 complex subunit 8 superfamily	Homologous Superfamily
H	IPR003422	Cytochrome b-c1 complex, subunit 6	Family
H	IPR023184	Ubiquinol-cytochrome C reductase hinge domain	Domain
H	IPR036811	Ubiquinol-cytochrome C reductase hinge domain superfamily	Homologous Superfamily
J	IPR008027	Cytochrome b-c1 complex subunit 9	Family
J	IPR036656	Cytochrome b-c1 complex subunit 9 superfamily	Homologous Superfamily
A	IPR007863	Peptidase M16, C-terminal	Domain
A	IPR011765	Peptidase M16, N-terminal	Domain
A	IPR011249	Metalloenzyme, LuxS/M16 peptidase-like	Homologous Superfamily
K	IPR029027	Single alpha-helix domain superfamily	Homologous Superfamily
K	IPR015089	Cytochrome b-c1 complex subunit 10	Family
C	IPR036150	Cytochrome b/b6, C-terminal domain superfamily	Homologous Superfamily
C	IPR027387	Cytochrome b/b6-like domain superfamily	Homologous Superfamily
C	IPR048260	Cytochrome b/b6, C-terminal domain, eukaryotic/bacterial	Domain
C	IPR016174	Di-haem cytochrome, transmembrane	Homologous Superfamily
C	IPR005798	Cytochrome b/b6, C-terminal	Domain
C	IPR048259	Cytochrome b/b6, N-terminal domain, eukaryotic/bacterial	Domain
C	IPR030689	Cytochrome b	Family
C	IPR005797	Cytochrome b/b6, N-terminal domain	Domain
E	IPR036922	Rieske [2Fe-2S] iron-sulphur domain superfamily	Homologous Superfamily
E	IPR014349	Rieske iron-sulphur protein	Family
E	IPR011070	Globular protein, non-globular alpha/beta subunit	Homologous Superfamily
E	IPR004192	Cytochrome b-c1 complex subunit Rieske, transmembrane domain	Domain
E	IPR015248	Ubiquinol-cytochrome c reductase iron-sulphur subunit, N-terminal	Domain
E	IPR017941	Rieske [2Fe-2S] iron-sulphur domain	Domain
E	IPR005805	Rieske iron-sulphur protein, C-terminal	Domain
E	IPR037008	Cytochrome bc1 complex subunit Rieske, transmembrane domain superfamily	Homologous Superfamily
E	IPR006317	Ubiquinol-cytochrome c reductase, iron-sulphur subunit	Domain
F	IPR003197	Cytochrome b-c1 complex subunit 7	Family
F	IPR036544	Cytochrome b-c1 complex subunit 7 superfamily	Homologous Superfamily
I	IPR036922	Rieske [2Fe-2S] iron-sulphur domain superfamily	Homologous Superfamily
I	IPR014349	Rieske iron-sulphur protein	Family
I	IPR011070	Globular protein, non-globular alpha/beta subunit	Homologous Superfamily
I	IPR004192	Cytochrome b-c1 complex subunit Rieske, transmembrane domain	Domain
I	IPR015248	Ubiquinol-cytochrome c reductase iron-sulphur subunit, N-terminal	Domain
I	IPR017941	Rieske [2Fe-2S] iron-sulphur domain	Domain
I	IPR005805	Rieske iron-sulphur protein, C-terminal	Domain
I	IPR037008	Cytochrome bc1 complex subunit Rieske, transmembrane domain superfamily	Homologous Superfamily
I	IPR006317	Ubiquinol-cytochrome c reductase, iron-sulphur subunit	Domain