Annotations: 1EJF

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1ejfa_	All beta proteins	HSP20-like chaperones	HSP20-like chaperones	Co-chaperone p23-like	Co-chaperone p23	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d1ejfb_	All beta proteins	HSP20-like chaperones	HSP20-like chaperones	Co-chaperone p23-like	Co-chaperone p23	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Co-chaperone p23-like	8028746	4002443	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Hsp20 chaperone-like	8041125	3001242	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Hsp20 chaperone-like	8041125	3001242	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	CS	e1ejfA1	A: beta sandwiches	X: HSP20-like	H: HSP20-like chaperones (From Topology)	T: HSP20-like chaperones	F: CS	ECOD (1.6)
B	CS	e1ejfB1	A: beta sandwiches	X: HSP20-like	H: HSP20-like chaperones (From Topology)	T: HSP20-like chaperones	F: CS	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.40.790	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (4.3.0)
B	2.60.40.790	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF04969	CS domain (CS)	CS domain	The CS and CHORD (Pfam:PF04968) are fused into a single polypeptide chain in metazoans but are found in separate proteins in plants; this is thought to be indicative of an interaction between CS and CHORD [1]. It has been suggested that the CS domain ...	The CS and CHORD (Pfam:PF04968) are fused into a single polypeptide chain in metazoans but are found in separate proteins in plants; this is thought to be indicative of an interaction between CS and CHORD [1]. It has been suggested that the CS domain is a binding module for HSP90, implying that CS domain-containing proteins are involved in recruiting heat shock proteins to multiprotein assemblies [2]. Two CS domains are found at the N-terminus of Ubiquitin carboxyl-terminal hydrolase 19 (USP19) (Swiss:O94966), these domains may play a role in the interaction of USP19 with cellular inhibitor of apoptosis 2 [3].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Prostaglandin E synthase 3	Hsp90 protein binding protein binding binding heat shock protein binding isomerase activity intramolecular oxidoreductase activity prostaglandin-E synthase activity catalytic activity protein-folding chaperone binding unfolded protein binding telomerase activity RNA-directed DNA polymerase activity catalytic activity, acting on DNA DNA polymerase activity Hsp90 protein binding protein binding binding heat shock protein binding isomerase activity intramolecular oxidoreductase activity prostaglandin-E synthase activity catalytic activity protein-folding chaperone binding unfolded protein binding telomerase activity RNA-directed DNA polymerase activity catalytic activity, acting on DNA DNA polymerase activity catalytic activity, acting on a nucleic acid transferase activity nucleotidyltransferase activity transferase activity, transferring phosphorus-containing groups DNA polymerase binding enzyme binding	regulation of protein stability biological regulation regulation of biological quality protein stabilization cellular biosynthetic process telomere organization RNA-templated DNA biosynthetic process nucleobase-containing compound metabolic process telomere maintenance via telomere lengthening cellular component organization nucleic acid biosynthetic process organic substance metabolic process organic substance biosynthetic process cellular component organization or biogenesis regulation of protein stability biological regulation regulation of biological quality protein stabilization cellular biosynthetic process telomere organization RNA-templated DNA biosynthetic process nucleobase-containing compound metabolic process telomere maintenance via telomere lengthening cellular component organization nucleic acid biosynthetic process organic substance metabolic process organic substance biosynthetic process cellular component organization or biogenesis telomere maintenance via telomerase cellular metabolic process chromosome organization primary metabolic process DNA metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process telomere maintenance organic cyclic compound metabolic process organelle organization biosynthetic process organic cyclic compound biosynthetic process metabolic process cellular process macromolecule metabolic process DNA biosynthetic process cellular component biogenesis cellular component assembly chaperone-mediated protein complex assembly protein-containing complex organization protein-containing complex assembly ribonucleoprotein complex biogenesis telomerase holoenzyme complex assembly protein-RNA complex assembly protein-RNA complex organization organonitrogen compound metabolic process gene expression protein maturation protein folding protein metabolic process developmental process skin development animal organ development anatomical structure development icosanoid metabolic process prostaglandin metabolic process unsaturated fatty acid metabolic process oxoacid metabolic process lipid biosynthetic process organic acid biosynthetic process organic acid metabolic process carboxylic acid biosynthetic process prostanoid metabolic process icosanoid biosynthetic process small molecule metabolic process prostaglandin biosynthetic process prostanoid biosynthetic process fatty acid metabolic process monocarboxylic acid biosynthetic process small molecule biosynthetic process carboxylic acid metabolic process fatty acid biosynthetic process unsaturated fatty acid biosynthetic process cellular lipid metabolic process monocarboxylic acid metabolic process lipid metabolic process cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling signal transduction cell communication response to organic substance intracellular receptor signaling pathway response to lipid hormone-mediated signaling pathway cellular response to endogenous stimulus response to hormone response to steroid hormone cellular response to organic substance cellular response to steroid hormone stimulus response to organic cyclic compound cellular response to hormone stimulus response to endogenous stimulus intracellular corticosteroid receptor signaling pathway cellular response to organic cyclic compound intracellular glucocorticoid receptor signaling pathway cellular response to chemical stimulus steroid hormone mediated signaling pathway response to chemical cellular response to lipid nuclear receptor signaling pathway intracellular steroid hormone receptor signaling pathway multicellular organismal process tube development respiratory tube development multicellular organism development lung saccule development lung development respiratory system development lung alveolus development system development fibroblast proliferation cell population proliferation regulation of catalytic activity regulation of transferase activity regulation of DNA biosynthetic process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process positive regulation of metabolic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process positive regulation of nucleobase-containing compound metabolic process regulation of cellular metabolic process regulation of molecular function positive regulation of DNA metabolic process regulation of macromolecule biosynthetic process regulation of metabolic process regulation of DNA metabolic process regulation of telomerase activity positive regulation of biological process positive regulation of cellular metabolic process positive regulation of molecular function positive regulation of biosynthetic process positive regulation of cellular process regulation of biosynthetic process positive regulation of telomerase activity positive regulation of transferase activity positive regulation of catalytic activity positive regulation of DNA biosynthetic process regulation of macromolecule metabolic process regulation of cellular biosynthetic process positive regulation of cellular biosynthetic process chaperone cofactor-dependent protein refolding chaperone-mediated protein folding 'de novo' protein folding 'de novo' post-translational protein folding positive regulation of phosphorylation positive regulation of phosphorus metabolic process phosphorylation positive regulation of phosphate metabolic process regulation of phosphate metabolic process phosphate-containing compound metabolic process regulation of phosphorus metabolic process regulation of phosphorylation phosphorus metabolic process long-chain fatty acid metabolic process cyclooxygenase pathway arachidonic acid metabolic process olefinic compound metabolic process carbohydrate metabolic process glucan biosynthetic process polysaccharide biosynthetic process energy derivation by oxidation of organic compounds carbohydrate biosynthetic process glycogen metabolic process generation of precursor metabolites and energy glycogen biosynthetic process polysaccharide metabolic process glucan metabolic process energy reserve metabolic process	membrane-bounded organelle protein-containing complex intracellular anatomical structure catalytic complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle telomerase holoenzyme complex organelle ribonucleoprotein complex cytoplasm cytosol membrane-bounded organelle protein-containing complex intracellular anatomical structure catalytic complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle telomerase holoenzyme complex organelle ribonucleoprotein complex cytoplasm cytosol membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen protein folding chaperone complex intracellular protein-containing complex intracellular non-membrane-bounded organelle chromosome chromosome, telomeric region chromosomal region non-membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR008978	HSP20-like chaperone	Homologous Superfamily
A, B	IPR045250	Co-chaperone protein p23-like	Family
A, B	IPR007052	CS domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q15185	atrial fibrillation ovarian cancer lung cancer plasma cell myeloma lymphoplasmacytic lymphoma toxic encephalopathy

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.