8QQK

Cryo-EM structure of E. coli cytochrome bo3 quinol oxidase assembled in peptidiscs

External Resource: Annotation

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

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00115	Cytochrome C and Quinol oxidase polypeptide I (COX1)	Cytochrome C and Quinol oxidase polypeptide I	-	Family
B	PF00116	Cytochrome C oxidase subunit II, periplasmic domain (COX2)	Cytochrome C oxidase subunit II, periplasmic domain	-	Domain
B	PF06481	COX Aromatic Rich Motif (COX_ARM)	COX Aromatic Rich Motif	-	Motif
C	PF00510	Cytochrome c oxidase subunit III (COX3)	Cytochrome c oxidase subunit III	-	Family
D	PF03626	Prokaryotic Cytochrome C oxidase subunit IV (COX4_pro)	Prokaryotic Cytochrome C oxidase subunit IV	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Cytochrome bo(3) ubiquinol oxidase subunit 1	oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity primary active transmembrane transporter activity transporter activity transmembrane transporter activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity cytochrome-c oxidase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreductase activity inorganic molecular entity transmembrane transporter activity oxidoreductase activity, acting on a heme group of donors inorganic cation transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity primary active transmembrane transporter activity transporter activity transmembrane transporter activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity cytochrome-c oxidase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreductase 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 catalytic activity binding organic cyclic compound binding tetrapyrrole binding heme binding quinone binding ubiquinone binding small molecule binding cation binding transition metal ion binding copper ion binding ion binding metal ion binding oxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor oxidoreductase activity, acting on diphenols and related substances as donors cytochrome bo3 ubiquinol oxidase activity	electron transport coupled proton transport transport proton transmembrane transport monoatomic ion transmembrane transport inorganic ion transmembrane transport establishment of localization inorganic cation transmembrane transport transmembrane transport monoatomic cation transmembrane transport localization energy coupled proton transmembrane transport, against electrochemical gradient monoatomic ion transport cellular process monoatomic cation transport electron transport coupled proton transport transport proton transmembrane transport monoatomic ion transmembrane transport inorganic ion transmembrane transport establishment of localization inorganic cation transmembrane transport transmembrane transport monoatomic cation transmembrane transport localization energy coupled proton transmembrane transport, against electrochemical gradient monoatomic ion transport cellular process monoatomic cation transport aerobic respiration cellular respiration energy derivation by oxidation of organic compounds cellular metabolic process metabolic process generation of precursor metabolites and energy aerobic electron transport chain oxidative phosphorylation electron transport chain respiratory electron transport chain	membrane respirasome cellular anatomical entity protein-containing complex catalytic complex cytochrome complex transmembrane transporter complex cytochrome o ubiquinol oxidase complex membrane protein complex oxidoreductase complex transporter complex cell periphery plasma membrane
B	Cytochrome bo(3) ubiquinol oxidase subunit 2	oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity primary active transmembrane transporter activity transporter activity transmembrane transporter activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity cytochrome-c oxidase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreductase activity inorganic molecular entity transmembrane transporter activity oxidoreductase activity, acting on a heme group of donors inorganic cation transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity primary active transmembrane transporter activity transporter activity transmembrane transporter activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity cytochrome-c oxidase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreductase 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 catalytic activity cation binding transition metal ion binding copper ion binding ion binding binding metal ion binding small molecule binding oxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor oxidoreductase activity, acting on diphenols and related substances as donors cytochrome bo3 ubiquinol oxidase activity	electron transport coupled proton transport transport proton transmembrane transport monoatomic ion transmembrane transport inorganic ion transmembrane transport establishment of localization inorganic cation transmembrane transport transmembrane transport monoatomic cation transmembrane transport localization energy coupled proton transmembrane transport, against electrochemical gradient monoatomic ion transport cellular process monoatomic cation transport electron transport coupled proton transport transport proton transmembrane transport monoatomic ion transmembrane transport inorganic ion transmembrane transport establishment of localization inorganic cation transmembrane transport transmembrane transport monoatomic cation transmembrane transport localization energy coupled proton transmembrane transport, against electrochemical gradient monoatomic ion transport cellular process monoatomic cation transport aerobic respiration cellular respiration energy derivation by oxidation of organic compounds cellular metabolic process metabolic process generation of precursor metabolites and energy aerobic electron transport chain oxidative phosphorylation electron transport chain respiratory electron transport chain ATP synthesis coupled electron transport	membrane respirasome cellular anatomical entity protein-containing complex catalytic complex cytochrome complex transmembrane transporter complex cytochrome o ubiquinol oxidase complex membrane protein complex oxidoreductase complex transporter complex cell periphery plasma membrane
C	Cytochrome bo(3) ubiquinol oxidase subunit 3	oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity primary active transmembrane transporter activity transporter activity transmembrane transporter activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity cytochrome-c oxidase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreductase activity inorganic molecular entity transmembrane transporter activity oxidoreductase activity, acting on a heme group of donors inorganic cation transmembrane transporter activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity primary active transmembrane transporter activity transporter activity transmembrane transporter activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity cytochrome-c oxidase activity electron transfer activity active monoatomic ion transmembrane transporter activity oxidoreductase 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 catalytic activity cytochrome bo3 ubiquinol oxidase activity	electron transport coupled proton transport transport proton transmembrane transport monoatomic ion transmembrane transport inorganic ion transmembrane transport establishment of localization inorganic cation transmembrane transport transmembrane transport monoatomic cation transmembrane transport localization energy coupled proton transmembrane transport, against electrochemical gradient monoatomic ion transport cellular process monoatomic cation transport electron transport coupled proton transport transport proton transmembrane transport monoatomic ion transmembrane transport inorganic ion transmembrane transport establishment of localization inorganic cation transmembrane transport transmembrane transport monoatomic cation transmembrane transport localization energy coupled proton transmembrane transport, against electrochemical gradient monoatomic ion transport cellular process monoatomic cation transport aerobic respiration cellular respiration energy derivation by oxidation of organic compounds cellular metabolic process metabolic process generation of precursor metabolites and energy aerobic electron transport chain oxidative phosphorylation electron transport chain respiratory electron transport chain	protein-containing complex catalytic complex cytochrome complex transmembrane transporter complex cytochrome o ubiquinol oxidase complex membrane membrane protein complex oxidoreductase complex cellular anatomical entity transporter complex cell periphery plasma membrane
D	Cytochrome bo(3) ubiquinol oxidase subunit 4	oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity primary active transmembrane transporter activity transporter activity transmembrane transporter activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity electron transfer activity oxidoreductase activity cytochrome bo3 ubiquinol oxidase activity oxidoreductase activity, acting on a heme group of donors oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity primary active transmembrane transporter activity transporter activity transmembrane transporter activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity electron transfer activity oxidoreductase activity cytochrome bo3 ubiquinol oxidase activity oxidoreductase activity, acting on a heme group of donors catalytic activity	aerobic electron transport chain aerobic respiration cellular respiration oxidative phosphorylation energy derivation by oxidation of organic compounds cellular metabolic process electron transport chain generation of precursor metabolites and energy respiratory electron transport chain metabolic process cellular process electron transport coupled proton transport transport proton transmembrane transport aerobic electron transport chain aerobic respiration cellular respiration oxidative phosphorylation energy derivation by oxidation of organic compounds cellular metabolic process electron transport chain generation of precursor metabolites and energy respiratory electron transport chain metabolic process cellular process electron transport coupled proton transport transport proton transmembrane transport monoatomic ion transmembrane transport inorganic ion transmembrane transport establishment of localization inorganic cation transmembrane transport transmembrane transport monoatomic cation transmembrane transport localization energy coupled proton transmembrane transport, against electrochemical gradient monoatomic ion transport monoatomic cation transport	protein-containing complex catalytic complex cytochrome complex transmembrane transporter complex cytochrome o ubiquinol oxidase complex membrane membrane protein complex oxidoreductase complex cellular anatomical entity transporter complex cell periphery plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036927	Cytochrome c oxidase-like, subunit I superfamily	Homologous Superfamily
A	IPR000883	Cytochrome c oxidase subunit I	Family
A	IPR023615	Cytochrome c oxidase, subunit I, copper-binding site	Binding Site
A	IPR023616	Cytochrome c oxidase-like, subunit I domain	Domain
A	IPR014207	Cytochrome o ubiquinol oxidase, subunit I	Family
B	IPR006333	Cytochrome o ubiquinol oxidase subunit II	Family
B	IPR011759	Cytochrome C oxidase subunit II, transmembrane domain	Domain
B	IPR036257	Cytochrome C oxidase subunit II, transmembrane domain superfamily	Homologous Superfamily
B	IPR045187	Cytochrome c/quinol oxidase subunit II	Family
B	IPR034227	Ubiquinol oxidase subunit 2, cupredoxin domain	Domain
B	IPR002429	Cytochrome c oxidase subunit II-like C-terminal	Domain
B	IPR008972	Cupredoxin	Homologous Superfamily
B	IPR010514	COX aromatic rich motif	Domain
C	IPR035973	Cytochrome c oxidase subunit III-like superfamily	Homologous Superfamily
C	IPR000298	Cytochrome c oxidase subunit III-like	Domain
C	IPR013833	Cytochrome c oxidase, subunit III, 4-helical bundle	Homologous Superfamily
C	IPR014206	Cytochrome o ubiquinol oxidase, subunit III	Family
C	IPR024791	Cytochrome c oxidase subunit III	Family
C	IPR033946	Ubiquinol oxidase subunit III domain	Domain
D	IPR014210	Cytochrome o ubiquinol oxidase subunit IV	Family
D	IPR005171	Cytochrome C oxidase subunit IV, prokaryotes	Family