Annotations: 2IOQ

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	GHKL (Gyrase Hsp90 Histidine Kinase MutL) domain-like	8070968	3000091	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	HSP90 C-terminal domain	8039382	3001478	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	GHKL (Gyrase Hsp90 Histidine Kinase MutL) domain-like	8070968	3000091	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	HSP90 C-terminal domain	8039382	3001478	SCOP2B (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	HSP90_1st	e2ioqA6	A: a+b two layers	X: Ribosomal protein S5 domain 2-like (From Topology)	H: Ribosomal protein S5 domain 2-like (From Topology)	T: Ribosomal protein S5 domain 2-like	F: HSP90_1st	ECOD (1.6)
A	HATPase_c	e2ioqA3	A: a+b two layers	X: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase-like	H: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase (From Topology)	T: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase	F: HATPase_c	ECOD (1.6)
A	HSP90_2nd	e2ioqA1	A: a/b three-layered sandwiches	X: HSP90 C-terminal a/b domain (From Topology)	H: HSP90 C-terminal a/b domain (From Topology)	T: HSP90 C-terminal a/b domain	F: HSP90_2nd	ECOD (1.6)
A	HSP90_3rd	e2ioqA7	A: mixed a+b and a/b	X: Zincin-like	H: HSP90 C-terminal domain (C-terminal part of Pfam 00183) (From Topology)	T: HSP90 C-terminal domain (C-terminal part of Pfam 00183)	F: HSP90_3rd	ECOD (1.6)
B	HSP90_1st	e2ioqB2	A: a+b two layers	X: Ribosomal protein S5 domain 2-like (From Topology)	H: Ribosomal protein S5 domain 2-like (From Topology)	T: Ribosomal protein S5 domain 2-like	F: HSP90_1st	ECOD (1.6)
B	HATPase_c	e2ioqB4	A: a+b two layers	X: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase-like	H: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase (From Topology)	T: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase	F: HATPase_c	ECOD (1.6)
B	HSP90_2nd	e2ioqB5	A: a/b three-layered sandwiches	X: HSP90 C-terminal a/b domain (From Topology)	H: HSP90 C-terminal a/b domain (From Topology)	T: HSP90 C-terminal a/b domain	F: HSP90_2nd	ECOD (1.6)
B	HSP90_3rd	e2ioqB3	A: mixed a+b and a/b	X: Zincin-like	H: HSP90 C-terminal domain (C-terminal part of Pfam 00183) (From Topology)	T: HSP90 C-terminal domain (C-terminal part of Pfam 00183)	F: HSP90_3rd	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.565.10	Alpha Beta	2-Layer Sandwich	Heat Shock Protein 90	Histidine kinase-like ATPase, C-terminal domain	CATH (4.3.0)
A	3.30.230.80	Alpha Beta	2-Layer Sandwich	Ribosomal Protein S5	domain 2	CATH (4.3.0)
A	3.40.50.11260	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
A	1.20.120.790	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Heat shock protein 90, C-terminal domain	CATH (4.3.0)
B	3.30.565.10	Alpha Beta	2-Layer Sandwich	Heat Shock Protein 90	Histidine kinase-like ATPase, C-terminal domain	CATH (4.3.0)
B	3.30.230.80	Alpha Beta	2-Layer Sandwich	Ribosomal Protein S5	domain 2	CATH (4.3.0)
B	3.40.50.11260	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
B	1.20.120.790	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Heat shock protein 90, C-terminal domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF02518	Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase (HATPase_c)	Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase	This family represents the structurally related ATPase domains of histidine kinase, DNA gyrase B and HSP90.	Domain
A, B	PF00183	Hsp90 protein (HSP90)	Hsp90 protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Chaperone protein htpG	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding unfolded protein binding protein binding identical protein binding protein homodimerization activity protein dimerization activity pyrophosphatase activity ATP hydrolysis activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity ATP-dependent activity protein folding chaperone ATP-dependent protein folding chaperone protein-folding chaperone binding	cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process primary metabolic process gene expression macromolecule biosynthetic process protein maturation organic substance metabolic process cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process primary metabolic process gene expression macromolecule biosynthetic process protein maturation organic substance metabolic process protein folding biosynthetic process organic substance biosynthetic process metabolic process protein metabolic process macromolecule metabolic process reproductive process in single-celled organism reproductive process cytokinesis cell division cell cycle FtsZ-dependent cytokinesis cell cycle process asexual reproduction response to heat response to abiotic stimulus response to temperature stimulus	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol cell periphery plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR003594	Histidine kinase/HSP90-like ATPase	Domain
A, B	IPR020575	Heat shock protein Hsp90, N-terminal	Domain
A, B	IPR036890	Histidine kinase/HSP90-like ATPase superfamily	Homologous Superfamily
A, B	IPR037196	HSP90, C-terminal domain	Homologous Superfamily
A, B	IPR020568	Ribosomal protein uS5 domain 2-type superfamily	Homologous Superfamily
A, B	IPR001404	Heat shock protein Hsp90 family	Family
A, B	IPR019805	Heat shock protein Hsp90, conserved site	Conserved Site

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.