3QT2

Structure of a cytokine ligand-receptor complex

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
C [auth D]	d3qt2d_	All alpha proteins	4-helical cytokines	4-helical cytokines	Short-chain cytokines	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
E	d3qt2e_	All alpha proteins	4-helical cytokines	4-helical cytokines	Short-chain cytokines	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
F	d3qt2f_	All alpha proteins	4-helical cytokines	4-helical cytokines	Short-chain cytokines	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B [auth C]	d3qt2c_	All alpha proteins	4-helical cytokines	4-helical cytokines	Short-chain cytokines	automated matches	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)
C [auth D]	SCOP2B Superfamily	4-helical cytokines	8037094	3001717	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	4-helical cytokines	8037094	3001717	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	4-helical cytokines	8037094	3001717	SCOP2B (2022-06-29)
B [auth C]	SCOP2B Superfamily	4-helical cytokines	8037094	3001717	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	IL6Ra-bind	e3qt2A8	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: IL6Ra-bind	ECOD (1.6)
A	fn3_6	e3qt2A9	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: fn3_6	ECOD (1.6)
D [auth B]	IL6Ra-bind	e3qt2B10	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: IL6Ra-bind	ECOD (1.6)
D [auth B]	fn3_6	e3qt2B11	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: fn3_6	ECOD (1.6)
C [auth D]	IL5	e3qt2D1	A: alpha bundles	X: Ferritin/Heme oxygenase/4-helical cytokines	H: 4-helical cytokines (From Topology)	T: 4-helical cytokines	F: IL5	ECOD (1.6)
E	IL5	e3qt2E1	A: alpha bundles	X: Ferritin/Heme oxygenase/4-helical cytokines	H: 4-helical cytokines (From Topology)	T: 4-helical cytokines	F: IL5	ECOD (1.6)
F	IL5	e3qt2F1	A: alpha bundles	X: Ferritin/Heme oxygenase/4-helical cytokines	H: 4-helical cytokines (From Topology)	T: 4-helical cytokines	F: IL5	ECOD (1.6)
B [auth C]	IL5	e3qt2C1	A: alpha bundles	X: Ferritin/Heme oxygenase/4-helical cytokines	H: 4-helical cytokines (From Topology)	T: 4-helical cytokines	F: IL5	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
D [auth B]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
C [auth D]	1.20.1250.10	Mainly Alpha	Up-down Bundle	Growth Hormone	Chain: A	CATH (4.3.0)
E	1.20.1250.10	Mainly Alpha	Up-down Bundle	Growth Hormone	Chain: A	CATH (4.3.0)
F	1.20.1250.10	Mainly Alpha	Up-down Bundle	Growth Hormone	Chain: A	CATH (4.3.0)
B [auth C]	1.20.1250.10	Mainly Alpha	Up-down Bundle	Growth Hormone	Chain: A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, D [auth B]	PF09240	Interleukin-6 receptor alpha chain, binding (IL6Ra-bind)	Interleukin-6 receptor alpha chain, binding	Members of this family adopt a structure consisting of an immunoglobulin-like beta-sandwich, with seven strands in two beta-sheets, in a Greek-key topology. They are required for binding to the cytokine Interleukin-6 [1].	Domain
B [auth C], C [auth D], E, F	PF02025	Interleukin 5 (IL5)	Interleukin 5	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, D [auth B]	Interleukin-5 receptor subunit alpha	molecular transducer activity transmembrane signaling receptor activity signaling receptor activity cytokine receptor activity immune receptor activity protein binding binding cytokine binding interleukin-5 receptor activity	cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus cell surface receptor signaling pathway signaling biological regulation response to cytokine cytokine-mediated signaling pathway cell communication response to peptide response to chemical cellular response to cytokine stimulus cellular process cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus cell surface receptor signaling pathway signaling biological regulation response to cytokine cytokine-mediated signaling pathway cell communication response to peptide response to chemical cellular response to cytokine stimulus cellular process signal transduction regulation of biosynthetic process multicellular organismal process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of gene expression regulation of interleukin-5 production biosynthetic process regulation of cytokine production cytokine production regulation of macromolecule biosynthetic process metabolic process regulation of multicellular organismal process macromolecule metabolic process regulation of metabolic process interleukin-5 production defense response immune response response to stress immune system process inflammatory response inflammatory response to antigenic stimulus interleukin-5-mediated signaling pathway regulation of leukocyte proliferation cell population proliferation positive regulation of cell population proliferation positive regulation of biological process leukocyte proliferation regulation of cell population proliferation positive regulation of leukocyte proliferation positive regulation of cellular process	protein-containing complex receptor complex cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane extracellular region extracellular space
B [auth C], C [auth D], E, F	Interleukin-5	protein binding binding molecular function activator activity signaling receptor binding molecular function regulator activity cytokine activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity growth factor activity interleukin-5 receptor binding cytokine receptor binding growth factor receptor binding	multicellular organismal process myeloid leukocyte differentiation regulation of leukocyte differentiation regulation of granulocyte differentiation regulation of cellular process cellular developmental process regulation of developmental process positive regulation of biological process regulation of eosinophil differentiation cell development regulation of cell differentiation regulation of cell development positive regulation of developmental process multicellular organism development positive regulation of cell differentiation multicellular organismal process myeloid leukocyte differentiation regulation of leukocyte differentiation regulation of granulocyte differentiation regulation of cellular process cellular developmental process regulation of developmental process positive regulation of biological process regulation of eosinophil differentiation cell development regulation of cell differentiation regulation of cell development positive regulation of developmental process multicellular organism development positive regulation of cell differentiation positive regulation of hemopoiesis cell differentiation anatomical structure development regulation of immune system process regulation of multicellular organismal process positive regulation of immune system process positive regulation of cellular process developmental process regulation of biological process regulation of multicellular organismal development hemopoiesis regulation of myeloid cell differentiation biological regulation positive regulation of cell development regulation of myeloid leukocyte differentiation positive regulation of myeloid leukocyte differentiation eosinophil differentiation myeloid cell differentiation granulocyte differentiation immune system process positive regulation of myeloid cell differentiation regulation of hemopoiesis positive regulation of multicellular organismal process positive regulation of eosinophil differentiation positive regulation of granulocyte differentiation cellular process positive regulation of leukocyte differentiation leukocyte differentiation response to stimulus immune response regulation of immune effector process immunoglobulin production positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of biosynthetic process positive regulation of immune effector process positive regulation of macromolecule metabolic process positive regulation of immunoglobulin production regulation of biosynthetic process production of molecular mediator of immune response regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process immune effector process regulation of gene expression biosynthetic process regulation of immunoglobulin production positive regulation of gene expression positive regulation of production of molecular mediator of immune response regulation of macromolecule biosynthetic process metabolic process regulation of production of molecular mediator of immune response macromolecule metabolic process regulation of metabolic process cellular response to stimulus positive regulation of cell communication cell surface receptor signaling pathway via STAT positive regulation of signal transduction signaling positive regulation of receptor signaling pathway via STAT regulation of signal transduction positive regulation of receptor signaling pathway via JAK-STAT cell communication positive regulation of response to stimulus regulation of receptor signaling pathway via JAK-STAT signal transduction regulation of signaling cell surface receptor signaling pathway regulation of response to stimulus regulation of cell communication regulation of receptor signaling pathway via STAT cell surface receptor signaling pathway via JAK-STAT positive regulation of signaling response to cytokine cytokine-mediated signaling pathway response to peptide response to chemical cellular response to cytokine stimulus interleukin-5-mediated signaling pathway positive regulation of DNA-templated transcription RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process positive regulation of nucleobase-containing compound metabolic process primary metabolic process nucleobase-containing compound biosynthetic process nucleic acid metabolic process positive regulation of RNA metabolic process positive regulation of RNA biosynthetic process regulation of DNA-templated transcription defense response response to stress inflammatory response positive regulation of organelle organization positive regulation of cellular component organization regulation of cellular component organization positive regulation of podosome assembly membraneless organelle assembly cellular component biogenesis cellular component organization positive regulation of protein-containing complex assembly regulation of protein-containing complex assembly cellular component assembly regulation of podosome assembly protein-containing complex assembly cellular component organization or biogenesis organelle assembly podosome assembly positive regulation of cellular component biogenesis protein-containing complex organization regulation of cellular component biogenesis regulation of organelle organization organelle organization regulation of organelle assembly positive regulation of organelle assembly positive regulation of cell population proliferation positive regulation of B cell proliferation regulation of leukocyte activation regulation of cell activation lymphocyte activation leukocyte proliferation leukocyte activation positive regulation of lymphocyte activation positive regulation of cell activation regulation of B cell proliferation lymphocyte proliferation regulation of B cell activation positive regulation of leukocyte activation positive regulation of mononuclear cell proliferation regulation of lymphocyte proliferation regulation of leukocyte proliferation cell population proliferation B cell activation cell activation positive regulation of lymphocyte proliferation B cell proliferation positive regulation of B cell activation regulation of cell population proliferation mononuclear cell proliferation positive regulation of leukocyte proliferation regulation of mononuclear cell proliferation regulation of lymphocyte activation regulation of protein modification process positive regulation of phosphorylation regulation of protein phosphorylation positive regulation of protein metabolic process peptidyl-tyrosine modification positive regulation of phosphate metabolic process positive regulation of peptidyl-tyrosine phosphorylation positive regulation of protein modification process regulation of phosphate metabolic process peptidyl-amino acid modification phosphate-containing compound metabolic process protein metabolic process protein modification process phosphorus metabolic process positive regulation of protein phosphorylation protein phosphorylation positive regulation of phosphorus metabolic process phosphorylation regulation of protein metabolic process regulation of peptidyl-tyrosine phosphorylation macromolecule modification regulation of phosphorylation regulation of phosphorus metabolic process peptidyl-tyrosine phosphorylation	cellular anatomical structure extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, D [auth B]	IPR015321	Type I cytokine receptor, cytokine-binding domain	Domain
A, D [auth B]	IPR003961	Fibronectin type III	Domain
A, D [auth B]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A, D [auth B]	IPR003532	Short hematopoietin receptor, family 2, conserved site	Conserved Site
A, D [auth B]	IPR036116	Fibronectin type III superfamily	Homologous Superfamily
B [auth C], C [auth D], E, F	IPR051392	IL-5_Cytokine	Unknown
B [auth C], C [auth D], E, F	IPR000186	Interleukin-5	Family
B [auth C], C [auth D], E, F	IPR009079	Four-helical cytokine-like, core	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, D [auth B]	Pharos: Q01344	pneumonia allergic disease Abortion, Spontaneous eosinophilic pneumonia malignant ependymoma lung adenocarcinoma non-small cell lung carcinoma pneumonitis lung carcinoma osteosarcoma pulmonary eosinophilia
B [auth C], C [auth D], E, F	Pharos: P05113	asthma hypereosinophilic syndrome autoimmune hepatitis pulmonary fibrosis allergic contact dermatitis Entamoebiasis inflammatory bowel disease atopic eczema eosinophilic pneumonia juvenile idiopathic arthritis arthritic joint disease autism dermatitis idiopathic interstitial pneumonia polycystic ovary syndrome asthma hypereosinophilic syndrome autoimmune hepatitis pulmonary fibrosis allergic contact dermatitis Entamoebiasis inflammatory bowel disease atopic eczema eosinophilic pneumonia juvenile idiopathic arthritis arthritic joint disease autism dermatitis idiopathic interstitial pneumonia polycystic ovary syndrome rhinitis allergic disease common cold dermatitis, atopic eosinophilic granulomatosis with polyangiitis helminthiasis pulmonary eosinophilia ulcerative colitis allergic rhinitis autoimmune disease Crohn disease

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.