8UGK

High resolution in-situ structure of complex III in respiratory supercomplex (composite)

External Resource: Annotation

Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth 3A], K [auth 3N]	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 [auth 3A], K [auth 3N]	PF00675	Insulinase (Peptidase family M16) (Peptidase_M16)	Insulinase (Peptidase family M16)	-	Family
U [auth 3X], V [auth 3Y]	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
B [auth 3B], L [auth 3O]	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 [auth 3B], L [auth 3O]	PF00675	Insulinase (Peptidase family M16) (Peptidase_M16)	Insulinase (Peptidase family M16)	-	Family
C [auth 3C], M [auth 3P]	PF00032	Cytochrome b(C-terminal)/b6/petD (Cytochrom_B_C)	Cytochrome b(C-terminal)/b6/petD	-	Domain
C [auth 3C], M [auth 3P]	PF00033	Cytochrome b/b6/petB (Cytochrome_B)	Cytochrome b/b6/petB	-	Domain
D [auth 3D], N [auth 3Q]	PF02167	Cytochrome C1 family (Cytochrom_C1)	Cytochrome C1 family	-	Family
E [auth 3E], I [auth 3I], O [auth 3R], S [auth 3V]	PF02921	Ubiquinol cytochrome reductase transmembrane region (UCR_TM)	Ubiquinol cytochrome reductase transmembrane region	-	Family
E [auth 3E], I [auth 3I], O [auth 3R], S [auth 3V]	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
G [auth 3G], Q [auth 3T]	PF02939	UcrQ family (UcrQ)	UcrQ family	-	Family
H [auth 3H], R [auth 3U]	PF02320	Ubiquinol-cytochrome C reductase hinge protein (UCR_hinge)	Ubiquinol-cytochrome C reductase hinge protein	-	Family
J [auth 3J], T [auth 3W]	PF05365	Ubiquinol-cytochrome C reductase, UQCRX/QCR9 like (UCR_UQCRX_QCR9)	Ubiquinol-cytochrome C reductase, UQCRX/QCR9 like	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth 3A], K [auth 3N]	Cytochrome b-c1 complex subunit 1, mitochondrial	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
U [auth 3X], V [auth 3Y]	Cytochrome b-c1 complex subunit 10	-	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
B [auth 3B], L [auth 3O]	Cytochrome b-c1 complex subunit 2, mitochondrial	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 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 respiratory chain complex IV mitochondrial respiratory chain complex IV nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen
C [auth 3C], M [auth 3P]	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 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
D [auth 3D], N [auth 3Q]	Cytochrome c1, heme protein, mitochondrial	binding organic cyclic compound binding tetrapyrrole binding heme binding electron transfer activity 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 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
E [auth 3E], I [auth 3I], O [auth 3R], S [auth 3V]	Cytochrome b-c1 complex subunit Rieske, mitochondrial	monoatomic cation transmembrane transporter activity proton transmembrane transporter activity oxidoreductase activity, acting on diphenols and related substances as donors primary active transmembrane transporter activity oxidoreductase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity 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 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 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 cell periphery plasma membrane
F [auth 3F], P [auth 3S]	Cytochrome b-c1 complex subunit 7	-	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
G [auth 3G], Q [auth 3T]	Cytochrome b-c1 complex 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	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 [auth 3H], R [auth 3U]	Cytochrome b-c1 complex subunit 6, mitochondrial	-	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 [auth 3J], T [auth 3W]	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

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth 3A], K [auth 3N]	IPR007863	Peptidase M16, C-terminal	Domain
A [auth 3A], K [auth 3N]	IPR011765	Peptidase M16, N-terminal	Domain
A [auth 3A], K [auth 3N]	IPR011249	Metalloenzyme, LuxS/M16 peptidase-like	Homologous Superfamily
U [auth 3X], V [auth 3Y]	IPR029027	Single alpha-helix domain superfamily	Homologous Superfamily
U [auth 3X], V [auth 3Y]	IPR015089	Cytochrome b-c1 complex subunit 10	Family
B [auth 3B], L [auth 3O]	IPR007863	Peptidase M16, C-terminal	Domain
B [auth 3B], L [auth 3O]	IPR011765	Peptidase M16, N-terminal	Domain
B [auth 3B], L [auth 3O]	IPR011249	Metalloenzyme, LuxS/M16 peptidase-like	Homologous Superfamily
B [auth 3B], L [auth 3O]	IPR001431	Peptidase M16, zinc-binding site	Binding Site
C [auth 3C], M [auth 3P]	IPR036150	Cytochrome b/b6, C-terminal domain superfamily	Homologous Superfamily
C [auth 3C], M [auth 3P]	IPR027387	Cytochrome b/b6-like domain superfamily	Homologous Superfamily
C [auth 3C], M [auth 3P]	IPR016174	Di-haem cytochrome, transmembrane	Homologous Superfamily
C [auth 3C], M [auth 3P]	IPR005798	Cytochrome b/b6, C-terminal	Domain
C [auth 3C], M [auth 3P]	IPR048259	Cytochrome b/b6, N-terminal domain, eukaryotic/bacterial	Domain
C [auth 3C], M [auth 3P]	IPR030689	Cytochrome b	Family
C [auth 3C], M [auth 3P]	IPR048260	Cytochrome b/b6, C-terminal domain, eukaryotic/bacterial	Domain
C [auth 3C], M [auth 3P]	IPR005797	Cytochrome b/b6, N-terminal domain	Domain
D [auth 3D], N [auth 3Q]	IPR036909	Cytochrome c-like domain superfamily	Homologous Superfamily
D [auth 3D], N [auth 3Q]	IPR002326	Cytochrome c1	Family
D [auth 3D], N [auth 3Q]	IPR009056	Cytochrome c-like domain	Domain
D [auth 3D], N [auth 3Q]	IPR021157	Cytochrome c1, transmembrane anchor, C-terminal	Homologous Superfamily
E [auth 3E], I [auth 3I], O [auth 3R], S [auth 3V]	IPR036922	Rieske [2Fe-2S] iron-sulphur domain superfamily	Homologous Superfamily
E [auth 3E], I [auth 3I], O [auth 3R], S [auth 3V]	IPR014349	Rieske iron-sulphur protein	Family
E [auth 3E], I [auth 3I], O [auth 3R], S [auth 3V]	IPR011070	Globular protein, non-globular alpha/beta subunit	Homologous Superfamily
E [auth 3E], I [auth 3I], O [auth 3R], S [auth 3V]	IPR004192	Cytochrome b-c1 complex subunit Rieske, transmembrane domain	Domain
E [auth 3E], I [auth 3I], O [auth 3R], S [auth 3V]	IPR015248	Ubiquinol-cytochrome c reductase iron-sulphur subunit, N-terminal	Domain
E [auth 3E], I [auth 3I], O [auth 3R], S [auth 3V]	IPR017941	Rieske [2Fe-2S] iron-sulphur domain	Domain
E [auth 3E], I [auth 3I], O [auth 3R], S [auth 3V]	IPR005805	Rieske iron-sulphur protein, C-terminal	Domain
E [auth 3E], I [auth 3I], O [auth 3R], S [auth 3V]	IPR037008	Cytochrome bc1 complex subunit Rieske, transmembrane domain superfamily	Homologous Superfamily
E [auth 3E], I [auth 3I], O [auth 3R], S [auth 3V]	IPR006317	Ubiquinol-cytochrome c reductase, iron-sulphur subunit	Domain
F [auth 3F], P [auth 3S]	IPR003197	Cytochrome b-c1 complex subunit 7	Family
F [auth 3F], P [auth 3S]	IPR036544	Cytochrome b-c1 complex subunit 7 superfamily	Homologous Superfamily
G [auth 3G], Q [auth 3T]	IPR004205	Cytochrome b-c1 complex subunit 8	Family
G [auth 3G], Q [auth 3T]	IPR036642	Cytochrome b-c1 complex subunit 8 superfamily	Homologous Superfamily
H [auth 3H], R [auth 3U]	IPR003422	Cytochrome b-c1 complex, subunit 6	Family
H [auth 3H], R [auth 3U]	IPR023184	Ubiquinol-cytochrome C reductase hinge domain	Domain
H [auth 3H], R [auth 3U]	IPR036811	Ubiquinol-cytochrome C reductase hinge domain superfamily	Homologous Superfamily
J [auth 3J], T [auth 3W]	IPR008027	Cytochrome b-c1 complex subunit 9	Family
J [auth 3J], T [auth 3W]	IPR036656	Cytochrome b-c1 complex subunit 9 superfamily	Homologous Superfamily