Annotations: 7JRO

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
G [auth g]	SCOP2 Family	Cytochrome c oxidase subunit h	8102300	4000996	SCOP2 (2022-06-29)
G [auth g]	SCOP2 Superfamily	Cytochrome c oxidase subunit h	8102301	3000395	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A [auth a]	COX1	e7jroa1	A: alpha superhelices	X: Cytochrome c oxidase subunit I-like	H: Cytochrome c oxidase subunit I-like (From Topology)	T: Cytochrome c oxidase subunit I-like	F: COX1	ECOD (1.6)
J [auth j]	F_UNCLASSIFIED	e7jroj1	A: extended segments	X: Mitochondrial cytochrome c oxidase subunit VIIc (aka VIIIa) (From Topology)	H: Mitochondrial cytochrome c oxidase subunit VIIc (aka VIIIa) (From Topology)	T: Mitochondrial cytochrome c oxidase subunit VIIc (aka VIIIa)	F: F_UNCLASSIFIED	ECOD (1.6)
B [auth b]	COX2	e7jrob2	A: beta sandwiches	X: Cupredoxin-like	H: Cupredoxin-related (From Topology)	T: Cupredoxin-related	F: COX2	ECOD (1.6)
B [auth b]	COX2_TM	e7jrob1	A: extended segments	X: Cytochrome c oxidase subunit II-like, transmembrane region (From Topology)	H: Cytochrome c oxidase subunit II-like, transmembrane region (From Topology)	T: Cytochrome c oxidase subunit II-like, transmembrane region	F: COX2_TM	ECOD (1.6)
C [auth c]	COX3	e7jroc1	A: alpha bundles	X: Cytochrome c oxidase subunit III-like (From Topology)	H: Cytochrome c oxidase subunit III-like (From Topology)	T: Cytochrome c oxidase subunit III-like	F: COX3	ECOD (1.6)
E [auth e]	COX5B	e7jroe1	A: few secondary structure elements	X: Rubredoxin-like	H: Rubredoxin-related	T: Cytochrome c oxidase Subunit F	F: COX5B	ECOD (1.6)
F [auth f]	COX6A	e7jrof1	A: extended segments	X: Mitochondrial cytochrome c oxidase subunit VIa (From Topology)	H: Mitochondrial cytochrome c oxidase subunit VIa (From Topology)	T: Mitochondrial cytochrome c oxidase subunit VIa	F: COX6A	ECOD (1.6)
G [auth g]	COX6B	e7jrog1	A: few secondary structure elements	X: Cytochrome c oxidase subunit h (From Topology)	H: Cytochrome c oxidase subunit h (From Topology)	T: Cytochrome c oxidase subunit h	F: COX6B	ECOD (1.6)
I [auth i]	F_UNCLASSIFIED	e7jroi1	A: extended segments	X: Mitochondrial cytochrome c oxidase subunit VIIa (From Topology)	H: Mitochondrial cytochrome c oxidase subunit VIIa (From Topology)	T: Mitochondrial cytochrome c oxidase subunit VIIa	F: F_UNCLASSIFIED	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B [auth b]	PF00116	Cytochrome C oxidase subunit II, periplasmic domain (COX2)	Cytochrome C oxidase subunit II, periplasmic domain	-	Domain
B [auth b]	PF02790	Cytochrome C oxidase subunit II, transmembrane domain (COX2_TM)	Cytochrome C oxidase subunit II, transmembrane domain	-	Family
D [auth d]	PF06592	Protein of unknown function (DUF1138) (DUF1138)	Protein of unknown function (DUF1138)	-	Family
E [auth e]	PF01215	Cytochrome c oxidase subunit Vb (COX5B)	Cytochrome c oxidase subunit Vb	-	Domain
F [auth f]	PF02046	Cytochrome c oxidase subunit VIa (COX6A)	Cytochrome c oxidase subunit VIa	-	Family
G [auth g]	PF02297	Cytochrome oxidase c subunit VIb (COX6B)	Cytochrome oxidase c subunit VIb	Cytochrome c oxidase, a 13 sub-unit complex, EC:1.9.3.1 is the terminal oxidase in the mitochondrial electron transport chain. This family is composed of the potentially heme-binding subunit IVb of the oxidase.	Domain
I [auth i]	PF02238	Cytochrome c oxidase subunit VII (COX7a)	Cytochrome c oxidase subunit VII	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth a]	COX1	-	-	-
J [auth j]	COX7c	-	-	membrane cellular anatomical entity
B [auth b]	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 inorganic molecular entity transmembrane transporter activity oxidoreductase activity, acting on a heme group of donors inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity catalytic activity	-	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 respirasome
C [auth c]	COX3	-	-	-
D [auth d]	COX4	-	-	membrane cellular anatomical entity
E [auth e]	cytochrome c oxidase subunit 5b-2, mitochondrial	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, cytochrome c to oxygen respiratory electron transport chain metabolic process cellular process mitochondrial ATP synthesis coupled electron transport	membrane-bounded organelle respiratory chain complex protein-containing complex mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion cytochrome complex mitochondrial respirasome membrane protein complex intracellular organelle organelle envelope mitochondrial protein-containing complex catalytic complex membrane-bounded organelle respiratory chain complex protein-containing complex mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion cytochrome complex mitochondrial respirasome membrane protein complex intracellular organelle organelle envelope mitochondrial protein-containing complex catalytic complex membrane cellular anatomical entity intracellular membrane-bounded organelle respiratory chain complex IV mitochondrial respiratory chain complex IV mitochondrial inner membrane inner mitochondrial membrane protein complex mitochondrial envelope organelle respirasome cytoplasm organelle membrane
F [auth f]	cytochrome c oxidase subunit 6a, mitochondrial	-	-	membrane-bounded organelle respiratory chain complex protein-containing complex mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion cytochrome complex mitochondrial respirasome membrane protein complex intracellular organelle organelle envelope mitochondrial protein-containing complex catalytic complex membrane-bounded organelle respiratory chain complex protein-containing complex mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion cytochrome complex mitochondrial respirasome membrane protein complex intracellular organelle organelle envelope mitochondrial protein-containing complex catalytic complex membrane cellular anatomical entity intracellular membrane-bounded organelle respiratory chain complex IV mitochondrial respiratory chain complex IV mitochondrial inner membrane inner mitochondrial membrane protein complex mitochondrial envelope organelle respirasome cytoplasm organelle membrane
G [auth g]	cytochrome c oxidase subunit 6b-1	-	-	membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle respiratory chain complex protein-containing complex cytochrome complex catalytic complex membrane membrane protein 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 cytochrome complex catalytic complex membrane membrane protein complex respirasome respiratory chain complex IV
H [auth h]	Cytochrome c oxidase subunit 5C	-	-	membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane mitochondrial respirasome cellular anatomical entity intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope mitochondrial envelope organelle membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane mitochondrial respirasome cellular anatomical entity intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope mitochondrial envelope organelle respirasome cytoplasm organelle membrane
I [auth i]	COX7a	-	-	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

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B [auth b]	IPR002429	Cytochrome c oxidase subunit II-like C-terminal	Domain
B [auth b]	IPR011759	Cytochrome C oxidase subunit II, transmembrane domain	Domain
B [auth b]	IPR036257	Cytochrome C oxidase subunit II, transmembrane domain superfamily	Homologous Superfamily
B [auth b]	IPR034210	Cytochrome c oxidase subunit 2, C-terminal	Domain
B [auth b]	IPR008972	Cupredoxin	Homologous Superfamily
B [auth b]	IPR001505	Copper centre Cu(A)	Binding Site
B [auth b]	IPR045187	Cytochrome c/quinol oxidase subunit II	Family
B [auth b]	IPR014222	Cytochrome c oxidase, subunit II	Domain
D [auth d]	IPR009515	Protein of unknown function DUF1138	Family
E [auth e]	IPR002124	Cytochrome c oxidase, subunit Vb	Family
E [auth e]	IPR036972	Cytochrome c oxidase, subunit Vb superfamily	Homologous Superfamily
F [auth f]	IPR036418	Cytochrome c oxidase, subunit VIa superfamily	Homologous Superfamily
F [auth f]	IPR001349	Cytochrome c oxidase, subunit VIa	Family
G [auth g]	IPR036549	Cytochrome c oxidase, subunit VIb superfamily	Homologous Superfamily
G [auth g]	IPR048280	Cytochrome oxidase c subunit VIb-like	Family
G [auth g]	IPR003213	Cytochrome c oxidase, subunit VIb	Family
H [auth h]	IPR008432	Cytochrome c oxidase subunit 5c	Family
I [auth i]	IPR039296	Predicted cytochrome c oxidase subunit VII	Family
I [auth i]	IPR039297	Cytochrome c oxidase subunit VII	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
B [auth b], D [auth d], F [auth f], H [auth h], I [auth i] B [auth b], D [auth d], F [auth f], H [auth h], I [auth i], J [auth j]	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
B [auth b], D [auth d], F [auth f], H [auth h], I [auth i] B [auth b], D [auth d], F [auth f], H [auth h], I [auth i], J [auth j]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
B [auth b], D [auth d], F [auth f], H [auth h], I [auth i] B [auth b], D [auth d], F [auth f], H [auth h], I [auth i], J [auth j]	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
B [auth b], D [auth d], F [auth f], H [auth h], I [auth i] B [auth b], D [auth d], F [auth f], H [auth h], I [auth i], J [auth j]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Electron Transport Chain Supercomplexes (Respirasome)	Respiratory supercomplex III₂-IV

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.