3BVO | pdb_00003bvo

Crystal structure of human co-chaperone protein HscB

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
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)
B	HSCB_C	e3bvoB1	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	e3bvoB2	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	PknG_rubred_like	e3bvoB3	A: few secondary structure elements	X: Rubredoxin-like	H: YfgJ-like (From Topology)	T: YfgJ-like	F: PknG_rubred_like	ECOD (1.6)
A	HSCB_C	e3bvoA5	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	e3bvoA4	A: alpha bundles	X: Chaperone J-domain (From Topology)	H: Chaperone J-domain (From Topology)	T: Chaperone J-domain	F: DnaJ	ECOD (1.6)
A	zf-CCHC,PknG_rubred_like	e3bvoA6	A: few secondary structure elements	X: Rubredoxin-like	H: YfgJ-like (From Topology)	T: YfgJ-like	F: zf-CCHC,PknG_rubred_like	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.10.287.110	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	DnaJ domain	CATH (4.2.0)
B	1.20.1280.20	Mainly Alpha	Up-down Bundle	Monooxygenase	HscB, C-terminal domain	CATH (4.2.0)
A	1.10.287.110	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	DnaJ domain	CATH (4.2.0)
A	1.20.1280.20	Mainly Alpha	Up-down Bundle	Monooxygenase	HscB, C-terminal domain	CATH (4.2.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF18256	Co-chaperone HscB tetracysteine metal binding motif (HscB_4_cys)	Co-chaperone HscB tetracysteine metal binding motif	This is the N-terminal domain of human co-chaperone protein HscB (hHscB). This domain is capable of binding a metal ion through its tetracysteine metal binding motif. The metal atom is coordinated by a set of four cysteine residues (Cys41, Cys44, Cys ...	This is the N-terminal domain of human co-chaperone protein HscB (hHscB). This domain is capable of binding a metal ion through its tetracysteine metal binding motif. The metal atom is coordinated by a set of four cysteine residues (Cys41, Cys44, Cys58 and Cys61) on opposed beta-hairpins. Although the N-domain lacks any recognizable secondary structure elements, it has several distant structural homologs including C-4 zinc finger domains and rubredoxin [1].	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	Co-chaperone protein HscB, mitochondrial precursor	ATPase activator activity molecular function activator activity molecular function regulator activity ATPase regulator activity cation binding ion binding binding metal ion binding small molecule binding protein binding protein-folding chaperone binding identical protein binding	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 multicellular organismal process cellular developmental process homeostatic process primitive hemopoiesis cell development embryo development 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 multicellular organismal process cellular developmental process homeostatic process primitive hemopoiesis cell development embryo development multicellular organism development cell differentiation anatomical structure development myeloid cell homeostasis embryonic organ development erythrocyte homeostasis developmental process hemopoiesis animal organ development erythrocyte differentiation embryonic hemopoiesis multicellular organismal-level homeostasis myeloid cell differentiation immune system process primitive erythrocyte differentiation homeostasis of number of cells metallo-sulfur cluster assembly iron-sulfur cluster assembly [2Fe-2S] cluster assembly	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle cytosol nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle cytosol nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear 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	IPR040682	HscB, tetracysteine metal binding motif	Domain
A, B	IPR036386	HscB, C-terminal domain superfamily	Homologous Superfamily
A, B	IPR009073	Co-chaperone HscB, C-terminal oligomerisation domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q8IWL3	carcinoma of esophagus lung carcinoma prostate carcinoma gastric carcinoma non-alcoholic fatty liver disease squamous cell carcinoma lung adenocarcinoma open-angle glaucoma

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.