Annotations: 6GIQ

Saccharomyces cerevisiae respiratory supercomplex III2IV

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: mpstruc

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	ubiquitin	e6giqA1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: ubiquitin	ECOD (v295.2)
J [auth L]	Oxidored_q2	e6giqL1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: Oxidored_q2	ECOD (v295.2)
B	ubiquitin	e6giqB1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: ubiquitin	ECOD (v295.2)
K [auth M]	Oxidored_q2	e6giqM1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: Oxidored_q2	ECOD (v295.2)
C	ubiquitin	e6giqC1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: ubiquitin	ECOD (v295.2)
L [auth N]	Oxidored_q2	e6giqN1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: Oxidored_q2	ECOD (v295.2)
D	ubiquitin	e6giqD1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: ubiquitin	ECOD (v295.2)
M [auth O]	Oxidored_q2	e6giqO1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: Oxidored_q2	ECOD (v295.2)
E	ubiquitin	e6giqE1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: ubiquitin	ECOD (v295.2)
N [auth P]	Oxidored_q2	e6giqP1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: Oxidored_q2	ECOD (v295.2)
F	Oxidored_q2	e6giqF1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: Oxidored_q2	ECOD (v295.2)
O [auth Q]	ubiquitin	e6giqQ1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: ubiquitin	ECOD (v295.2)
G	ubiquitin	e6giqG1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: ubiquitin	ECOD (v295.2)
P [auth R]	Oxidored_q2	e6giqR1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: Oxidored_q2	ECOD (v295.2)
H	ubiquitin	e6giqH1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: ubiquitin	ECOD (v295.2)
Q [auth S]	Oxidored_q2	e6giqS1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: Oxidored_q2	ECOD (v295.2)
I	ubiquitin	e6giqI1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: ubiquitin	ECOD (v295.2)
R [auth T]	Oxidored_q2	e6giqT1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: Oxidored_q2	ECOD (v295.2)
S [auth U]	Oxidored_q2	e6giqU1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: Oxidored_q2	ECOD (v295.2)
T [auth V]	ubiquitin	e6giqV1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: ubiquitin	ECOD (v295.2)
U [auth a]	ubiquitin	e6giqa1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: ubiquitin	ECOD (v295.2)
V [auth b]	ubiquitin	e6giqb1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: ubiquitin	ECOD (v295.2)
W [auth c]	ubiquitin	e6giqc1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: ubiquitin	ECOD (v295.2)
X [auth d]	LlgE_F_G_D1	e6giqd1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: alpha/beta-Hydrolases	F: LlgE_F_G_D1	ECOD (v295.2)
Y [auth e]	Oxidored_q2	e6giqe1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: Oxidored_q2	ECOD (v295.2)
Z [auth f]	ubiquitin	e6giqf1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: ubiquitin	ECOD (v295.2)
AA [auth g]	Oxidored_q2	e6giqg1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: Oxidored_q2	ECOD (v295.2)
BA [auth h]	Oxidored_q2	e6giqh1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: Oxidored_q2	ECOD (v295.2)
DA [auth j]	ubiquitin	e6giqj1	A: alpha arrays	X: PriB N-terminal domain-like	H: Ubiquitin-related	T: Ubiquitin-like	F: ubiquitin	ECOD (v295.2)
EA [auth k]	LlgE_F_G_D1	e6giqk1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: alpha/beta-Hydrolases	F: LlgE_F_G_D1	ECOD (v295.2)

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)
J [auth L]	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)
K [auth M]	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)
L [auth N]	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)
M [auth O]	1.10.760.10	Mainly Alpha	Orthogonal Bundle	Cytochrome Bc1 Complex	Chain D, domain 2	CATH (4.3.0)
M [auth O]	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)
N [auth P]	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)
N [auth P]	2.102.10.10	Mainly Beta	3-layer Sandwich	Rieske Iron-sulfur Protein	Rieske [2Fe-2S] iron-sulphur domain	CATH (4.3.0)
F	1.10.287.20	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Ubiquinol-cytochrome C reductase hinge domain	CATH (4.3.0)
O [auth Q]	1.10.287.20	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Ubiquinol-cytochrome C reductase hinge domain	CATH (4.3.0)
G	1.10.1090.10	Mainly Alpha	Orthogonal Bundle	Cytochrome Bc1 Complex	Chain F	CATH (4.3.0)
P [auth R]	1.10.1090.10	Mainly Alpha	Orthogonal Bundle	Cytochrome Bc1 Complex	Chain F	CATH (4.3.0)
H	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 S]	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)
I	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)
R [auth T]	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)
U [auth a]	1.20.210.10	Mainly Alpha	Up-down Bundle	Cytochrome C Oxidase	Chain A	CATH (utative)
V [auth b]	1.10.287.90	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)
V [auth b]	2.60.40.420	Mainly Beta	Sandwich	Immunoglobulin-like	Cupredoxins - blue copper proteins	CATH (4.3.0)
W [auth c]	1.10.287.70	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)
W [auth c]	1.20.120.80	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Cytochrome c oxidase, subunit III, four-helix bundle	CATH (4.3.0)
Z [auth f]	1.25.40.40	Mainly Alpha	Alpha Horseshoe	Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat	Cytochrome c oxidase, subunit Va/VI	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, J [auth L]	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, J [auth L]	PF00675	Insulinase (Peptidase family M16) (Peptidase_M16)	Insulinase (Peptidase family M16)	-	Family
A, J [auth L]	PF00115	Cytochrome C and Quinol oxidase polypeptide I (COX1)	Cytochrome C and Quinol oxidase polypeptide I	-	Family
B, K [auth M]	PF00116	Cytochrome C oxidase subunit II, periplasmic domain (COX2)	Cytochrome C oxidase subunit II, periplasmic domain		Domain
B, K [auth M]	PF02790	Cytochrome C oxidase subunit II, transmembrane domain (COX2_TM)	Cytochrome C oxidase subunit II, transmembrane domain	-	Family
B, K [auth M]	PF00675	Insulinase (Peptidase family M16) (Peptidase_M16)	Insulinase (Peptidase family M16)	-	Family
C, L [auth N]	PF00032	Cytochrome b(C-terminal)/b6/petD (Cytochrom_B_C)	Cytochrome b(C-terminal)/b6/petD		Domain
C, L [auth N]	PF00033	Cytochrome b/b6/petB (Cytochrome_B)	Cytochrome b/b6/petB		Domain
C, L [auth N]	PF00510	Cytochrome c oxidase subunit III (COX3)	Cytochrome c oxidase subunit III		Domain
D, M [auth O]	PF02167	Cytochrome C1 family (Cytochrom_C1)	Cytochrome C1 family	-	Family
E, N [auth P]	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, O [auth Q]	PF02320	Ubiquinol-cytochrome C reductase hinge protein (UCR_hinge)	Ubiquinol-cytochrome C reductase hinge protein	The ubiquinol-cytochrome C reductase complex (cytochrome bc1 complex) is a respiratory multienzyme complex [1]. This Pfam family represents the 'hinge' protein of the complex which is thought to mediate formation of the cytochrome c1 and cytochrome c ...	The ubiquinol-cytochrome C reductase complex (cytochrome bc1 complex) is a respiratory multienzyme complex [1]. This Pfam family represents the 'hinge' protein of the complex which is thought to mediate formation of the cytochrome c1 and cytochrome c complex.	Domain
G, P [auth R]	PF02271	Ubiquinol-cytochrome C reductase complex 14kD subunit (UCR_14kD)	Ubiquinol-cytochrome C reductase complex 14kD subunit	-	Family
H, Q [auth S]	PF02939	UcrQ family (UcrQ)	UcrQ family	-	Family
I, R [auth T]	PF05365	Cytochrome b-c1 complex subunit 9 (UCR_UQCRX_QCR9)	Cytochrome b-c1 complex subunit 9	-	Family
S [auth U], T [auth V]	PF09796	Ubiquinol-cytochrome-c reductase complex subunit (QCR10) (QCR10)	Ubiquinol-cytochrome-c reductase complex subunit (QCR10)	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, J [auth L]	BJ4_G0001550.mRNA.1.CDS.1	-	-	-
B, K [auth M]	Cytochrome b-c1 complex subunit 2, mitochondrial	-	-	-
C, L [auth N]	Cytochrome b	-	-	-
D, M [auth O]	BJ4_G0049990.mRNA.1.CDS.1	monoatomic cation transmembrane transporter activity proton transmembrane transporter activity oxidoreductase activity, acting on diphenols and related substances as donors primary active transmembrane transporter activity oxidoreductase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity quinol-cytochrome-c reductase activity monoatomic ion transmembrane transporter activity transporter activity catalytic activity transmembrane transporter activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity oxidoreductase activity, acting on diphenols and related substances as donors primary active transmembrane transporter activity oxidoreductase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity quinol-cytochrome-c reductase activity monoatomic ion transmembrane transporter activity transporter activity catalytic activity transmembrane transporter activity binding tetrapyrrole binding heme binding	aerobic respiration cellular respiration aerobic electron transport chain oxidative phosphorylation energy derivation by oxidation of organic compounds ATP synthesis coupled electron transport electron transport chain generation of precursor metabolites and energy mitochondrial electron transport, ubiquinol to cytochrome c respiratory electron transport chain metabolic process cellular process mitochondrial ATP synthesis coupled electron transport	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, N [auth P]	Cytochrome b-c1 complex subunit Rieske, mitochondrial	-	-	-
F, O [auth Q]	QCR6 isoform 1	-	-	-
G, P [auth R]	Complex III subunit 7	-	-	-
H, Q [auth S]	BJ4_G0028260.mRNA.1.CDS.1	-	-	-
I, R [auth T]	HLJ1_G0021680.mRNA.1.CDS.1	-	-	-
S [auth U], T [auth V]	BJ4_G0023510.mRNA.1.CDS.1	-	-	-
U [auth a]	Cytochrome c oxidase subunit 1	monoatomic cation transmembrane transporter activity proton transmembrane transporter activity primary active transmembrane transporter activity cytochrome-c oxidase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreductase activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity oxidoreductase activity, acting on a heme group of donors monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity catalytic activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity primary active transmembrane transporter activity cytochrome-c oxidase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreductase activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity oxidoreductase activity, acting on a heme group of donors monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity catalytic activity binding tetrapyrrole binding heme binding	aerobic respiration cellular respiration aerobic electron transport chain oxidative phosphorylation energy derivation by oxidation of organic compounds ATP synthesis coupled electron transport electron transport chain generation of precursor metabolites and energy mitochondrial electron transport, cytochrome c to oxygen respiratory electron transport chain metabolic process cellular process mitochondrial ATP synthesis coupled electron transport	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle mitochondrial membrane organelle inner membrane membrane mitochondrial inner membrane organelle envelope mitochondrial envelope membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle mitochondrial membrane organelle inner membrane membrane mitochondrial inner membrane organelle envelope mitochondrial envelope organelle membrane respiratory chain complex protein-containing complex catalytic complex cytochrome complex membrane protein complex respiratory chain complex IV transporter complex transmembrane transporter complex oxidoreductase complex
V [auth b]	Cytochrome c oxidase subunit 2	-	-	-
W [auth c]	Cytochrome c oxidase subunit 3	-	-	-
X [auth d]	BJ4_G0018620.mRNA.1.CDS.1	-	-	-
Y [auth e]	BJ4_G0046460.mRNA.1.CDS.1	-	-	-
Z [auth f]	BJ4_G0024040.mRNA.1.CDS.1	-	-	-
AA [auth g]	BJ4_G0043230.mRNA.1.CDS.1	-	-	-
BA [auth h]	BJ4_G0038800.mRNA.1.CDS.1	-	-	-
CA [auth i]	Cytochrome c oxidase polypeptide VIIA	-	-	-
DA [auth j]	BJ4_G0035470.mRNA.1.CDS.1	-	-	-
EA [auth k]	Cytochrome c oxidase subunit	-	-	-
FA [auth m]	Unknown Cox subunit	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
D, M [auth O]	IPR036909	Cytochrome c-like domain superfamily	Homologous Superfamily
D, M [auth O]	IPR002326	Cytochrome c1	Family
D, M [auth O]	IPR009056	Cytochrome c-like domain	Domain
D, M [auth O]	IPR021157	Cytochrome c1, transmembrane anchor, C-terminal	Homologous Superfamily
U [auth a]	IPR036927	Cytochrome c oxidase-like, subunit I superfamily	Homologous Superfamily
U [auth a]	IPR000883	Cytochrome c oxidase subunit I	Family
U [auth a]	IPR023615	Cytochrome c oxidase, subunit I, copper-binding site	Binding Site
U [auth a]	IPR023616	Cytochrome c oxidase-like, subunit I domain	Domain
U [auth a]	IPR033944	Cytochrome c oxidase subunit I domain	Domain

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
D, M [auth O], U [auth a]	OPM	Transmembrane	Alpha-helical polytopic	Electron transport chain complex IV (cytochrome c oxidase)	Respiratory supercomplexes III-IV

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
D, M [auth O], U [auth a]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
D, M [auth O], U [auth a]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Electron Transport Chain Supercomplexes (Respirasome)	Electron Transport Chain (ETC) Super Complex III₂IV