3L75 | pdb_00003l75

Cytochrome BC1 complex from chicken with fenamidone bound

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)
A	d3l75a1	Alpha and beta proteins (a+b)	LuxS/MPP-like metallohydrolase	LuxS/MPP-like metallohydrolase	automated matches	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
K [auth N]	d3l75n1	Alpha and beta proteins (a+b)	LuxS/MPP-like metallohydrolase	LuxS/MPP-like metallohydrolase	automated matches	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
L [auth O]	d3l75o1	Alpha and beta proteins (a+b)	LuxS/MPP-like metallohydrolase	LuxS/MPP-like metallohydrolase	automated matches	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
B	d3l75b1	Alpha and beta proteins (a+b)	LuxS/MPP-like metallohydrolase	LuxS/MPP-like metallohydrolase	automated matches	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
C	d3l75c1	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	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
C	d3l75c2	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	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
M [auth P]	d3l75p1	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	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
M [auth P]	d3l75p2	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	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
D	d3l75d1	All alpha proteins	Cytochrome c	Cytochrome c	Cytochrome bc1 domain	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
D	d3l75d2	Membrane and cell surface proteins and peptides	Single transmembrane helix	Cytochrome c1 subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase), transmembrane anchor	automated matches	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
N [auth Q]	d3l75q1	All alpha proteins	Cytochrome c	Cytochrome c	Cytochrome bc1 domain	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
N [auth Q]	d3l75q2	Membrane and cell surface proteins and peptides	Single transmembrane helix	Cytochrome c1 subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase), transmembrane anchor	automated matches	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
E	d3l75e2	All beta proteins	ISP domain	ISP domain	Rieske iron-sulfur protein (ISP)	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
E	d3l75e1	Membrane and cell surface proteins and peptides	Single transmembrane helix	ISP transmembrane anchor	automated matches	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
O [auth R]	d3l75r2	All beta proteins	ISP domain	ISP domain	Rieske iron-sulfur protein (ISP)	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
O [auth R]	d3l75r1	Membrane and cell surface proteins and peptides	Single transmembrane helix	ISP transmembrane anchor	automated matches	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
G	d3l75g_	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)	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
Q [auth T]	d3l75t_	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)	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
R [auth U]	d3l75u_	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)	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
H	d3l75h_	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)	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
J	d3l75j_	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)	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
T [auth W]	d3l75w_	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)	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
F	d3l75f_	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)	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
P [auth S]	d3l75s_	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)	automated matches	(Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C	SCOP2B Superfamily	a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8042105	3000966	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Transmembrane di-heme cytochromes	8042108	3000517	SCOP2B (2022-06-29)
M [auth P]	SCOP2B Superfamily	Transmembrane di-heme cytochromes	8042108	3000517	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)
G	SCOP2B Superfamily	Ubiquinone-binding protein QP-C of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8073735	3000770	SCOP2B (2022-06-29)
Q [auth T]	SCOP2B Superfamily	Ubiquinone-binding protein QP-C of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8073735	3000770	SCOP2B (2022-06-29)
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)
J	SCOP2B Superfamily	Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8068589	3000779	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)
F	SCOP2B Superfamily	14 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	8068577	3000797	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)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	e3l75A1	A: Alpha-beta plaits	X: Phage tail protein-like	H: Transmembrane protein 14A	T: HSP90,HATPase_c_3	F:	ECOD (20:10:01)
K [auth N]	e3l75N1	A: Alpha-beta plaits	X: Phage tail protein-like	H: Transmembrane protein 14A	T: HSP90,HATPase_c_3	F:	ECOD (20:10:01)
L [auth O]	e3l75O1	A: Alpha-beta plaits	X: Phage tail protein-like	H: Transmembrane protein 14A	T: HSP90,HATPase_c_3	F:	ECOD (20:10:01)
B	e3l75B1	A: Alpha-beta plaits	X: Phage tail protein-like	H: Transmembrane protein 14A	T: HSP90,HATPase_c_3	F:	ECOD (20:10:01)
C	e3l75C1	A: Alpha-beta plaits	X: Phage tail protein-like	H: Transmembrane protein 14A	T: HSP90,HATPase_c_3	F:	ECOD (20:10:01)
M [auth P]	e3l75P1	A: Alpha-beta plaits	X: Phage tail protein-like	H: Transmembrane protein 14A	T: HSP90,HATPase_c_3	F:	ECOD (20:10:01)
D	e3l75D1	A: Alpha-beta plaits	X: Phage tail protein-like	H: Transmembrane protein 14A	T: HSP90,HATPase_c_3	F:	ECOD (20:10:01)
N [auth Q]	e3l75Q1	A: Alpha-beta plaits	X: Phage tail protein-like	H: Transmembrane protein 14A	T: HSP90,HATPase_c_3	F:	ECOD (20:10:01)
E	e3l75E2	A: amino-terminal domain of OmpATb	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: MCM_OB	F:	ECOD (20:10:01)
E	e3l75E3	A: TIM beta/alpha-barrel	X: TIM barrels	H: TIM barrels	T: ATP-synt_VA_C	F:	ECOD (20:10:01)
O [auth R]	e3l75R2	A: amino-terminal domain of OmpATb	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: MCM_OB	F:	ECOD (20:10:01)
O [auth R]	e3l75R3	A: TIM beta/alpha-barrel	X: TIM barrels	H: TIM barrels	T: ATP-synt_VA_C	F:	ECOD (20:10:01)
G	e3l75G1	A: Alpha-beta plaits	X: Phage tail protein-like	H: Transmembrane protein 14A	T: HSP90,HATPase_c_3	F:	ECOD (20:10:01)
Q [auth T]	e3l75T1	A: Alpha-beta plaits	X: Phage tail protein-like	H: Transmembrane protein 14A	T: HSP90,HATPase_c_3	F:	ECOD (20:10:01)
R [auth U]	e3l75U1	A: Alpha-beta plaits	X: Phage tail protein-like	H: Transmembrane protein 14A	T: HSP90,HATPase_c_3	F:	ECOD (20:10:01)
H	e3l75H1	A: Alpha-beta plaits	X: Phage tail protein-like	H: Transmembrane protein 14A	T: HSP90,HATPase_c_3	F:	ECOD (20:10:01)
I	e3l75I1	A: Alkaline phosphatase-like	X: Alkaline phosphatase-like	H: Alkaline phosphatase-like	T: PP_M1	F:	ECOD (20:10:01)
J	e3l75J1	A: Alpha-beta plaits	X: Phage tail protein-like	H: Transmembrane protein 14A	T: HSP90,HATPase_c_3	F:	ECOD (20:10:01)
T [auth W]	e3l75W1	A: Alpha-beta plaits	X: Phage tail protein-like	H: Transmembrane protein 14A	T: HSP90,HATPase_c_3	F:	ECOD (20:10:01)
F	e3l75F1	A: Alpha-beta plaits	X: Phage tail protein-like	H: Transmembrane protein 14A	T: HSP90,HATPase_c_3	F:	ECOD (20:10:01)
P [auth S]	e3l75S1	A: Alpha-beta plaits	X: Phage tail protein-like	H: Transmembrane protein 14A	T: HSP90,HATPase_c_3	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.830.10	Alpha Beta	2-Layer Sandwich	Cytochrome Bc1 Complex	Chain A, domain 1	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)
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)
C	1.20.810.10	Mainly Alpha	Up-down Bundle	Cytochrome Bc1 Complex	Chain C	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)
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)
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)
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)
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)
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)
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)
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)
I	2.10.210.10	Mainly Beta	Ribbon	Cytochrome Bc1 Complex	Chain I	CATH (4.3.0)
S [auth V]	2.10.210.10	Mainly Beta	Ribbon	Cytochrome Bc1 Complex	Chain I	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)
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)
F	1.10.1090.10	Mainly Alpha	Orthogonal Bundle	Cytochrome Bc1 Complex	Chain F	CATH (4.3.0)
P [auth S]	1.10.1090.10	Mainly Alpha	Orthogonal Bundle	Cytochrome Bc1 Complex	Chain F	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
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
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
I, S [auth V]	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
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 protein-containing 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 cytochrome complex catalytic complex transmembrane transporter complex membrane protein complex transporter complex respiratory chain complex III
C, M [auth P]	CYTOCHROME B	oxidoreductase activity catalytic activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity 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 binding oxidoreductase activity catalytic activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity 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 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 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 cytochrome complex catalytic complex transmembrane transporter complex membrane protein complex transporter complex respiratory chain complex III
D, N [auth Q]	MITOCHONDRIAL CYTOCHROME C1, HEME PROTEIN	binding tetrapyrrole binding heme binding electron transfer activity cation binding ion 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
E, O [auth R]	CYTOCHROME B-C1 COMPLEX SUBUNIT 5, RIESKE IRONSULFUR PROTEIN, MITOCHONDRIAL	oxidoreductase activity catalytic activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity 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 oxidoreductase activity catalytic activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity 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 cation binding ion binding metal ion 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 cytochrome complex catalytic complex transmembrane transporter complex membrane protein complex transporter complex respiratory chain complex III
G, Q [auth T]	MITOCHONDRIAL UBIQUINOL-CYTOCHROME C REDUCTASE UBIQUINONE-BINDING PROTEIN QP-C	-	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 cytochrome complex catalytic complex transmembrane transporter complex membrane protein complex transporter complex respiratory chain complex III
H, R [auth U]	MITOCHONDRIAL UBIQUINOL-CYTOCHROME C REDUCTASE 11 KDA PROTEIN, COMPLEX III SUBUNIT VIII	-	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
I, S [auth V]	CYTOCHROME B-C1 COMPLEX SUBUNIT RIESKE, MITOCHONDRIAL	oxidoreductase activity catalytic activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity 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 oxidoreductase activity catalytic activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity 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 cation binding ion binding metal ion 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 cytochrome complex catalytic complex transmembrane transporter complex membrane protein complex transporter complex respiratory chain complex III
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 cytochrome complex catalytic complex transmembrane transporter complex membrane protein complex transporter complex respiratory chain complex III
F, P [auth S]	MITOCHONDRIAL UBIQUINOL-CYTOCHROME C REDUCTASE 14 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 cytochrome complex catalytic complex transmembrane transporter complex membrane protein complex transporter complex respiratory chain complex III

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
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
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
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
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
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
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
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
I, S [auth V]	IPR036922	Rieske [2Fe-2S] iron-sulphur domain superfamily	Homologous Superfamily
I, S [auth V]	IPR014349	Rieske iron-sulphur protein	Family
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
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]	IPR037008	Cytochrome bc1 complex subunit Rieske, transmembrane domain superfamily	Homologous Superfamily
I, S [auth V]	IPR006317	Ubiquinol-cytochrome c reductase, iron-sulphur subunit	Domain
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
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

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