Annotations: 3UO3

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	HSCB_C	e3uo3A3	A: alpha bundles	X: YvfG-like	H: HSC20 (HSCB), C-terminal oligomerisation domain (From Topology)	T: HSC20 (HSCB), C-terminal oligomerisation domain	F: HSCB_C	ECOD (1.6)
A	DnaJ	e3uo3A4	A: alpha bundles	X: Chaperone J-domain (From Topology)	H: Chaperone J-domain (From Topology)	T: Chaperone J-domain	F: DnaJ	ECOD (1.6)
B	HSCB_C	e3uo3B5	A: alpha bundles	X: YvfG-like	H: HSC20 (HSCB), C-terminal oligomerisation domain (From Topology)	T: HSC20 (HSCB), C-terminal oligomerisation domain	F: HSCB_C	ECOD (1.6)
B	DnaJ	e3uo3B6	A: alpha bundles	X: Chaperone J-domain (From Topology)	H: Chaperone J-domain (From Topology)	T: Chaperone J-domain	F: DnaJ	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.287.110	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	DnaJ domain	CATH (4.3.0)
A	1.20.1280.20	Mainly Alpha	Up-down Bundle	Monooxygenase	HscB, C-terminal domain	CATH (4.3.0)
B	1.10.287.110	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	DnaJ domain	CATH (4.3.0)
B	1.20.1280.20	Mainly Alpha	Up-down Bundle	Monooxygenase	HscB, C-terminal domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00226	DnaJ domain (DnaJ)	DnaJ domain	DnaJ domains (J-domains) are associated with hsp70 heat-shock system and it is thought that this domain mediates the interaction. DnaJ-domain is therefore part of a chaperone (protein folding) system. The T-antigens, although not in Prosite are conf ...	DnaJ domains (J-domains) are associated with hsp70 heat-shock system and it is thought that this domain mediates the interaction. DnaJ-domain is therefore part of a chaperone (protein folding) system. The T-antigens, although not in Prosite are confirmed as DnaJ containing domains from literature [2].	Domain
A, B	PF07743	HSCB C-terminal oligomerisation domain (HSCB_C)	HSCB C-terminal oligomerisation domain	This domain is the HSCB C-terminal oligomerisation domain and is found on co-chaperone proteins.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	J-type co-chaperone JAC1, mitochondrial	ATPase activator activity molecular function activator activity molecular function regulator activity ATPase regulator activity protein binding binding protein-folding chaperone binding	intracellular iron ion homeostasis inorganic ion homeostasis cellular homeostasis chemical homeostasis homeostatic process intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization intracellular iron ion homeostasis inorganic ion homeostasis cellular homeostasis chemical homeostasis homeostatic process intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein complex oligomerization protein-containing complex assembly cellular process cellular component organization or biogenesis organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process primary metabolic process gene expression macromolecule biosynthetic process protein maturation by [4Fe-4S] cluster transfer protein maturation organic substance metabolic process biosynthetic process protein maturation by iron-sulfur cluster transfer organic substance biosynthetic process metabolic process protein metabolic process macromolecule metabolic process protein maturation by [2Fe-2S] cluster transfer aerobic respiration cellular respiration energy derivation by oxidation of organic compounds generation of precursor metabolites and energy metallo-sulfur cluster assembly iron-sulfur cluster assembly [2Fe-2S] cluster assembly	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 membrane-enclosed lumen mitochondrial matrix intracellular organelle lumen organelle lumen mitochondrial intermembrane space organelle envelope lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR004640	Co-chaperone Hsc20	Family
A, B	IPR036869	Chaperone J-domain superfamily	Homologous Superfamily
A, B	IPR001623	DnaJ domain	Domain
A, B	IPR036386	HscB, C-terminal domain superfamily	Homologous Superfamily
A, B	IPR009073	Co-chaperone HscB, C-terminal oligomerisation domain	Domain

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.