7SSP

Structure of the human COQ7:COQ9 complex by single-particle electron cryo-microscopy, unliganded state

External Resource: Annotation

Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF21392	e7sspA2	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: PF21392	ECOD (1.6)
A	PF08511	e7sspA1	A: alpha bundles	X: Tetracyclin repressor-like, C-terminal domain (From Topology)	H: Tetracyclin repressor-like, C-terminal domain (From Topology)	T: Tetracyclin repressor-like, C-terminal domain	F: PF08511	ECOD (1.6)
B	PF21392	e7sspB2	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: PF21392	ECOD (1.6)
B	PF08511	e7sspB1	A: alpha bundles	X: Tetracyclin repressor-like, C-terminal domain (From Topology)	H: Tetracyclin repressor-like, C-terminal domain (From Topology)	T: Tetracyclin repressor-like, C-terminal domain	F: PF08511	ECOD (1.6)
C	PF21392	e7sspC2	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: PF21392	ECOD (1.6)
C	PF08511	e7sspC1	A: alpha bundles	X: Tetracyclin repressor-like, C-terminal domain (From Topology)	H: Tetracyclin repressor-like, C-terminal domain (From Topology)	T: Tetracyclin repressor-like, C-terminal domain	F: PF08511	ECOD (1.6)
D	PF21392	e7sspD1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: PF21392	ECOD (1.6)
D	PF08511	e7sspD2	A: alpha bundles	X: Tetracyclin repressor-like, C-terminal domain (From Topology)	H: Tetracyclin repressor-like, C-terminal domain (From Topology)	T: Tetracyclin repressor-like, C-terminal domain	F: PF08511	ECOD (1.6)
E	PF03232	e7sspE1	A: alpha bundles	X: Ferritin/Heme oxygenase/4-helical cytokines	H: Ferritin/Heme oxygenase	T: Ferritin	F: PF03232	ECOD (1.6)
F	PF03232	e7sspF1	A: alpha bundles	X: Ferritin/Heme oxygenase/4-helical cytokines	H: Ferritin/Heme oxygenase	T: Ferritin	F: PF03232	ECOD (1.6)
G	PF03232	e7sspG1	A: alpha bundles	X: Ferritin/Heme oxygenase/4-helical cytokines	H: Ferritin/Heme oxygenase	T: Ferritin	F: PF03232	ECOD (1.6)
H	PF03232	e7sspH1	A: alpha bundles	X: Ferritin/Heme oxygenase/4-helical cytokines	H: Ferritin/Heme oxygenase	T: Ferritin	F: PF03232	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF08511	COQ9 (COQ9)	COQ9	COQ9 is an enzyme that is required for the biosynthesis of coenzyme Q [1]. It may either catalyse a reaction in the coenzyme Q biosynthetic pathway or have a regulatory role.	Domain
A, B, C, D	PF21392	Ubiquinone biosynthesis protein COQ9, N-terminal domain (COQ9_N)	Ubiquinone biosynthesis protein COQ9, N-terminal domain	This domain is found at the N-terminal end of Ubiquinone biosynthesis protein COQ9 from humans and similar proteins predominantly from vertebrates. COQ9 is a lipid-binding protein involved in the biosynthesis of coenzyme Q, also named ubiquinone, an ...	This domain is found at the N-terminal end of Ubiquinone biosynthesis protein COQ9 from humans and similar proteins predominantly from vertebrates. COQ9 is a lipid-binding protein involved in the biosynthesis of coenzyme Q, also named ubiquinone, an essential lipid-soluble electron transporter for aerobic cellular respiration. This protein has structural homology to the TFR family of bacterial transcriptional regulators. This domain contains an a helix-turn- helix (HTH) motif that largely lacks the positive charges required for DNA binding [1,2].	Domain
E, F, G, H	PF03232	Ubiquinone biosynthesis protein COQ7 (COQ7)	Ubiquinone biosynthesis protein COQ7	Members of this family contain two repeats of about 90 amino acids, that contains two conserved motifs. One of these DXEXXH may be part of an enzyme active site.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Ubiquinone biosynthesis protein COQ9, mitochondrial	identical protein binding protein binding binding protein homodimerization activity protein dimerization activity lipid 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, NADH to ubiquinone respiratory electron transport chain metabolic process cellular process mitochondrial ATP synthesis coupled electron transport 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, NADH to ubiquinone respiratory electron transport chain metabolic process cellular process mitochondrial ATP synthesis coupled electron transport small molecule biosynthetic process cellular biosynthetic process ubiquinone biosynthetic process quinone metabolic process cellular ketone metabolic process biosynthetic process quinone biosynthetic process small molecule metabolic process ubiquinone metabolic process ketone biosynthetic process	membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle mitochondrial membrane organelle inner membrane membrane mitochondrial inner membrane organelle envelope mitochondrial envelope membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle mitochondrial membrane organelle inner membrane membrane mitochondrial inner membrane organelle envelope mitochondrial envelope organelle membrane protein-containing complex catalytic complex ubiquinone biosynthesis complex
E, F, G, H	5-demethoxyubiquinone hydroxylase, mitochondrial	oxidoreductase activity monooxygenase activity oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, NAD(P)H as one donor, and incorporation of one atom of oxygen catalytic activity protein-containing complex binding chromatin binding binding 3-demethoxyubiquinol 3-hydroxylase activity cation binding ion binding metal ion binding small molecule binding	multicellular organismal process determination of adult lifespan regulation of biosynthetic process regulation of biological process regulation of cellular process cellular biosynthetic process cellular metabolic process biological regulation regulation of cellular metabolic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of cellular biosynthetic process regulation of gene expression multicellular organismal process determination of adult lifespan regulation of biosynthetic process regulation of biological process regulation of cellular process cellular biosynthetic process cellular metabolic process biological regulation regulation of cellular metabolic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of cellular biosynthetic process regulation of gene expression biosynthetic process regulation of macromolecule biosynthetic process metabolic process cellular process macromolecule metabolic process regulation of metabolic process negative regulation of biological process RNA metabolic process negative regulation of cellular metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process regulation of RNA metabolic process transcription by RNA polymerase II negative regulation of cellular process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process negative regulation of macromolecule metabolic process regulation of transcription by RNA polymerase II negative regulation of DNA-templated transcription negative regulation of transcription by RNA polymerase II negative regulation of metabolic process primary metabolic process nucleobase-containing compound biosynthetic process nucleic acid metabolic process negative regulation of cellular biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process regulation of DNA-templated transcription negative regulation of RNA metabolic process reactive oxygen species metabolic process regulation of reactive oxygen species metabolic process positive regulation of DNA-templated transcription positive regulation of biological process positive regulation of cellular metabolic process positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of biosynthetic process positive regulation of macromolecule metabolic process positive regulation of cellular process positive regulation of nucleobase-containing compound metabolic process positive regulation of transcription by RNA polymerase II positive regulation of RNA metabolic process positive regulation of RNA biosynthetic process positive regulation of cellular biosynthetic process small molecule biosynthetic process ubiquinone biosynthetic process quinone metabolic process cellular ketone metabolic process quinone biosynthetic process small molecule metabolic process ubiquinone metabolic process ketone biosynthetic process	membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle mitochondrial membrane organelle inner membrane membrane mitochondrial inner membrane organelle envelope mitochondrial envelope membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle mitochondrial membrane organelle inner membrane membrane mitochondrial inner membrane organelle envelope mitochondrial envelope organelle membrane intracellular non-membrane-bounded organelle chromosome non-membrane-bounded organelle protein-containing complex catalytic complex ubiquinone biosynthesis complex extrinsic component of organelle membrane extrinsic component of membrane extrinsic component of mitochondrial inner membrane nucleus

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR013718	COQ9, C-terminal domain	Domain
A, B, C, D	IPR048674	Ubiquinone biosynthesis protein COQ9, HTH domain	Domain
A, B, C, D	IPR012762	Ubiquinone biosynthesis protein COQ9	Family
E, F, G, H	IPR011566	Ubiquinone biosynthesis protein Coq7	Family
E, F, G, H	IPR009078	Ferritin-like superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C, D	Pharos: O75208	encephalopathy-hypertrophic cardiomyopathy-renal tubular disease syndrome coenzyme Q10 deficiency Epileptic encephalopathy systemic lupus erythematosus drug-induced liver injury intellectual disability osteosarcoma leukodystrophy ovarian cancer
E, F, G, H	Pharos: Q99807	primary coenzyme Q10 deficiency 8 coenzyme Q10 deficiency Mitochondrial Diseases psoriasis herpes zoster osteosarcoma malignant mesothelioma

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 R01GM133198.