8IUJ | pdb_00008iuj

Cryo-EM structure of Euglena gracilis super-complex III2+IV2, composite

External Resource: Annotation

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

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
Z [auth 4A]	V-set	e8iuj4A1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
M [auth 4a]	V-set	e8iuj4a1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
I [auth Qd]	V-set	e8iujQd1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
C [auth QD]	V-set	e8iujQD1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
VA [auth QB]	V-set	e8iujQB1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
RA [auth Qb]	V-set	e8iujQb1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
TA [auth Qg]	V-set	e8iujQg1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
PA [auth QG]	V-set	e8iujQG1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
SA [auth Qf]	V-set	e8iujQf1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
OA [auth QF]	V-set	e8iujQF1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
NA [auth Qe]	V-set	e8iujQe1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
MA [auth QE]	V-set	e8iujQE1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
H [auth Qc]	V-set	e8iujQc1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
B [auth QC]	V-set	e8iujQC1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
W [auth c2]	V-set	e8iujc21	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
IA [auth C2]	V-set	e8iujC21	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
V [auth c1]	V-set	e8iujc11	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
HA [auth C1]	V-set	e8iujC11	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
G [auth Qa]	V-set	e8iujQa1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
A [auth QA]	V-set	e8iujQA1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
BA [auth 4E], O [auth 4e]	COXEG5	-	-	-
AA [auth 4C], N [auth 4c]	COXEG3	-	-	-
M [auth 4a], Z [auth 4A]	COXEG1	-	-	-
F [auth QK], L [auth Qk]	Ubiquinol-cytochrome-C reductase complex subunit IX, mitochondrial	-	cellular respiration energy derivation by oxidation of organic compounds respiratory electron transport chain electron transport chain metabolic process cellular process generation of precursor metabolites and energy	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 [auth QJ], K [auth Qj]	UQCR10	-	-	-
D [auth QH], J [auth Qh]	UQCRQ	-	-	-
BB [auth 7a], HB [auth 7A]	COX7a	-	-	-
C [auth QD], I [auth Qd]	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 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 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	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
AB [auth 4I], FB [auth 4i]	COXEG9	-	-	-
EB [auth 4g], ZA [auth 4G]	COXEG7	-	-	-
DB [auth 4f], YA [auth 4F]	COXEG6	-	-	-
CB [auth 4d], XA [auth 4D]	COXEG4	-	-	-
GB [auth 5b], WA [auth 5B]	COX5b-2	-	-	-
RA [auth Qb], VA [auth QB]	Ubiquinol-cytochrome-c reductase complex core protein 2, mitochondrial	cation binding ion binding binding metal ion binding small molecule binding	cellular respiration energy derivation by oxidation of organic compounds respiratory electron transport chain electron transport chain metabolic process cellular process generation of precursor metabolites and energy	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
QA [auth QI], UA [auth Qi]	UQCR9	-	-	-
PA [auth QG], TA [auth Qg]	UQCRB	-	-	-
OA [auth QF], SA [auth Qf]	UQCRH	-	-	-
MA [auth QE], NA [auth Qe]	UQCRFS1	-	-	-
B [auth QC], H [auth Qc]	Cytochrome b	oxidoreductase activity catalytic activity electron transfer activity cation binding ion binding binding metal ion binding small molecule binding	cellular respiration energy derivation by oxidation of organic compounds respiratory electron transport chain electron transport chain metabolic process cellular process generation of precursor metabolites and energy	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
KA [auth DC], Y [auth dc]	COX4	-	-	-
JA [auth C3], X [auth c3]	Putative NADH dehydrogenase subunit 6	electron transfer activity	-	cellular anatomical structure membrane
IA [auth C2], W [auth c2]	Cytochrome c oxidase subunit 2	cation binding transition metal ion binding copper ion binding ion binding binding metal ion binding small molecule binding 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 cation binding transition metal ion binding copper ion binding ion binding binding metal ion binding small molecule binding 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	aerobic respiration cellular respiration oxidative phosphorylation energy derivation by oxidation of organic compounds respiratory electron transport chain ATP synthesis coupled electron transport electron transport chain metabolic process cellular process generation of precursor metabolites and energy	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
HA [auth C1], V [auth c1]	Cytochrome c oxidase subunit 1	oxidoreductase 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 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 oxidoreductase 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 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 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, cytochrome c to oxygen respiratory electron transport chain metabolic process cellular process mitochondrial ATP synthesis coupled electron transport electron transport coupled proton transport 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 electron transport coupled proton transport transport proton transmembrane transport monoatomic ion transmembrane transport establishment of localization monoatomic cation transmembrane transport transmembrane transport localization energy coupled proton transmembrane transport, against electrochemical gradient monoatomic ion transport monoatomic cation 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
GA [auth 7C], U [auth 7c]	COX7c	-	-	-
FA [auth 6B], T [auth 6b]	COX6b-1	-	-	-
LA [auth 6A], S [auth 6a]	COX6a	-	-	-
EA [auth 5C], R [auth 5c]	COX5c	-	-	-
DA [auth 4J], Q [auth 4j]	COXEG10	-	-	-
CA [auth 4H], P [auth 4h]	COXEG8	-	-	-
A [auth QA], G [auth Qa]	MPP-beta	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth QD], I [auth Qd]	IPR036909	Cytochrome c-like domain superfamily	Homologous Superfamily
C [auth QD], I [auth Qd]	IPR002326	Cytochrome c1	Family
C [auth QD], I [auth Qd]	IPR021157	Cytochrome c1, transmembrane anchor, C-terminal	Homologous Superfamily
RA [auth Qb], VA [auth QB]	IPR011765	Peptidase M16, N-terminal	Domain
RA [auth Qb], VA [auth QB]	IPR011249	Metalloenzyme, LuxS/M16 peptidase-like	Homologous Superfamily
RA [auth Qb], VA [auth QB]	IPR050361	Mitochondrial Processing Peptidase/Ubiquinol-cytochrome c Reductase Complex	Family
B [auth QC], H [auth Qc]	IPR036150	Cytochrome b/b6, C-terminal domain superfamily	Homologous Superfamily
B [auth QC], H [auth Qc]	IPR027387	Cytochrome b/b6-like domain superfamily	Homologous Superfamily
B [auth QC], H [auth Qc]	IPR016174	Di-haem cytochrome, transmembrane	Homologous Superfamily
B [auth QC], H [auth Qc]	IPR005798	Cytochrome b/b6, C-terminal	Domain
B [auth QC], H [auth Qc]	IPR005797	Cytochrome b/b6, N-terminal domain	Domain
JA [auth C3], X [auth c3]	IPR035973	Cytochrome c oxidase subunit III-like superfamily	Homologous Superfamily
IA [auth C2], W [auth c2]	IPR002429	Cytochrome c oxidase subunit II-like C-terminal	Domain
IA [auth C2], W [auth c2]	IPR011759	Cytochrome C oxidase subunit II, transmembrane domain	Domain
IA [auth C2], W [auth c2]	IPR036257	Cytochrome C oxidase subunit II, transmembrane domain superfamily	Homologous Superfamily
IA [auth C2], W [auth c2]	IPR008972	Cupredoxin	Homologous Superfamily
IA [auth C2], W [auth c2]	IPR001505	Copper centre Cu(A)	Binding Site
IA [auth C2], W [auth c2]	IPR045187	Cytochrome c/quinol oxidase subunit II	Family
HA [auth C1], V [auth c1]	IPR036927	Cytochrome c oxidase-like, subunit I superfamily	Homologous Superfamily
HA [auth C1], V [auth c1]	IPR000883	Cytochrome c oxidase subunit I	Family
HA [auth C1], V [auth c1]	IPR023615	Cytochrome c oxidase, subunit I, copper-binding site	Binding Site
HA [auth C1], V [auth c1]	IPR023616	Cytochrome c oxidase-like, subunit I domain	Domain

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.