Annotations: 1N26

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1n26a1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	I set domains	Interleukin-6 receptor alpha chain, N-terminal domain	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d1n26a2	All beta proteins	Immunoglobulin-like beta-sandwich	Fibronectin type III	Fibronectin type III	Interleukin-6 receptor alpha chain, domains 2 and 3	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	I set domains	8054842	4007543	SCOP2 (2022-06-29)
A	SCOP2 Family	Fibronectin type III	8055152	4007555	SCOP2 (2022-06-29)
A	SCOP2 Family	Fibronectin type III	8055538	4007555	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Immunoglobulin (Ig) domain-like	8054843	3000071	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Fibronectin type III	8055153	3002063	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Fibronectin type III	8055539	3002063	SCOP2 (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	I-set_4	e1n26A3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: I-set_4	ECOD (1.6)
A	IL6Ra-bind	e1n26A1	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	e1n26A2	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)

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)

IMGT Antibody Annotation IMGT Database Homepage

Chain	Protein Name	Description	Organism Name	Gene Allele Name(s)	Domain Name(s)	Receptor Type	Receptor Description	Provenance Source
A	IL6R (Interleukin-6 receptor subunit alpha)	1C-LIKE-2F-DOMAIN	Homo sapiens (human)	IL6R	C-LIKE-DOMAIN C-LIKE, F-LIKE-DOMAIN F-DOMAIN	RPI	1C-LIKE-2F-DOMAIN	IMGT (202415-0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	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
A	PF00047	Immunoglobulin domain (ig)	Immunoglobulin domain	Members of the immunoglobulin superfamily are found in hundreds of proteins of different functions. Examples include antibodies, the giant muscle kinase titin and receptor tyrosine kinases. Immunoglobulin-like domains may be involved in protein-prot ...	Members of the immunoglobulin superfamily are found in hundreds of proteins of different functions. Examples include antibodies, the giant muscle kinase titin and receptor tyrosine kinases. Immunoglobulin-like domains may be involved in protein-protein and protein-ligand interactions.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	IL-6 Receptor alpha chain	interleukin-11 receptor activity molecular transducer activity transmembrane signaling receptor activity signaling receptor activity cytokine receptor activity immune receptor activity ciliary neurotrophic factor binding protein binding binding cytokine binding interleukin-6 receptor activity interleukin-6 binding growth factor binding interleukin-11 binding interleukin-11 receptor activity molecular transducer activity transmembrane signaling receptor activity signaling receptor activity cytokine receptor activity immune receptor activity ciliary neurotrophic factor binding protein binding binding cytokine binding interleukin-6 receptor activity interleukin-6 binding growth factor binding interleukin-11 binding identical protein binding protein homodimerization activity protein dimerization activity enzyme binding	cellular response to stimulus response to organic substance 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 cellular response to chemical stimulus response to chemical cellular response to cytokine stimulus cellular response to stimulus response to organic substance 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 cellular response to chemical stimulus response to chemical cellular response to cytokine stimulus cellular process cellular response to organic substance signal transduction regulation of biosynthetic process negative regulation of collagen metabolic process negative regulation of metabolic process negative regulation of biological process collagen biosynthetic process regulation of collagen biosynthetic process regulation of collagen metabolic process negative regulation of collagen biosynthetic process biosynthetic process negative regulation of biosynthetic process metabolic process collagen metabolic process regulation of metabolic process cell death extrinsic apoptotic signaling pathway apoptotic signaling pathway apoptotic process programmed cell death positive regulation of cell communication positive regulation of signal transduction positive regulation of phosphorylation regulation of catalytic activity positive regulation of receptor signaling pathway via STAT regulation of signal transduction regulation of transferase activity positive regulation of phosphate metabolic process regulation of primary metabolic process positive regulation of metabolic process regulation of phosphate metabolic process peptidyl-amino acid modification phosphate-containing compound metabolic process regulation of receptor signaling pathway via JAK-STAT positive regulation of macromolecule metabolic process protein modification process phosphorus metabolic process positive regulation of protein phosphorylation protein phosphorylation positive regulation of phosphorus metabolic process phosphorylation cellular metabolic process regulation of protein metabolic process primary metabolic process regulation of cellular metabolic process regulation of molecular function positive regulation of kinase activity regulation of kinase activity regulation of response to stimulus activation of protein kinase activity macromolecule modification positive regulation of activation of Janus kinase activity regulation of phosphorus metabolic process macromolecule metabolic process regulation of receptor signaling pathway via STAT cell surface receptor signaling pathway via STAT regulation of protein modification process regulation of protein phosphorylation positive regulation of protein metabolic process positive regulation of biological process positive regulation of cellular metabolic process peptidyl-tyrosine modification positive regulation of receptor signaling pathway via JAK-STAT regulation of activation of Janus kinase activity positive regulation of response to stimulus positive regulation of molecular function positive regulation of protein modification process positive regulation of peptidyl-tyrosine phosphorylation organic substance metabolic process protein metabolic process positive regulation of protein kinase activity positive regulation of cellular process activation of Janus kinase activity regulation of signaling organonitrogen compound metabolic process positive regulation of transferase activity regulation of peptidyl-tyrosine phosphorylation positive regulation of catalytic activity regulation of protein kinase activity regulation of macromolecule metabolic process regulation of cell communication regulation of phosphorylation peptidyl-tyrosine phosphorylation cell surface receptor signaling pathway via JAK-STAT positive regulation of signaling multicellular organismal process cellular biosynthetic process positive regulation of macromolecule biosynthetic process positive regulation of biosynthetic process regulation of cytokine production organic substance biosynthetic process cytokine production regulation of multicellular organismal process gene expression macromolecule biosynthetic process regulation of chemokine production regulation of cellular biosynthetic process regulation of gene expression positive regulation of gene expression chemokine production positive regulation of chemokine production positive regulation of multicellular organismal process regulation of macromolecule biosynthetic process positive regulation of cytokine production positive regulation of cellular biosynthetic process acute-phase response defense response response to stress inflammatory response acute inflammatory response immune response immune system process hepatic immune response organ or tissue specific immune response cell population proliferation regulation of smooth muscle cell proliferation positive regulation of cell population proliferation smooth muscle cell proliferation positive regulation of smooth muscle cell proliferation regulation of cell population proliferation muscle cell proliferation biological process involved in interspecies interaction between organisms response to other organism response to external stimulus defense response to Gram-negative bacterium response to biotic stimulus defense response to bacterium defense response to other organism response to bacterium response to external biotic stimulus negative regulation of cellular metabolic process negative regulation of interleukin-8 production negative regulation of cellular process negative regulation of macromolecule metabolic process negative regulation of cytokine production interleukin-8 production negative regulation of cellular biosynthetic process negative regulation of gene expression negative regulation of macromolecule biosynthetic process negative regulation of multicellular organismal process regulation of interleukin-8 production positive regulation of locomotion regulation of cell motility regulation of response to external stimulus positive regulation of chemotaxis positive regulation of cell migration positive regulation of response to external stimulus taxis positive regulation of cell motility regulation of cell migration cell migration regulation of immune system process cell motility positive regulation of immune system process locomotion cell chemotaxis chemotaxis regulation of leukocyte chemotaxis regulation of leukocyte migration positive regulation of leukocyte chemotaxis positive regulation of leukocyte migration regulation of chemotaxis leukocyte migration regulation of locomotion leukocyte chemotaxis vascular endothelial growth factor production neutrophil mediated immunity leukocyte mediated immunity myeloid leukocyte mediated immunity immune effector process connective tissue development renal system development kidney vasculature development multicellular organism development renal system vasculature development positive regulation of glomerular mesangial cell proliferation regulation of glomerular mesangial cell proliferation anatomical structure development nephron development system development blood vessel development positive regulation of cell proliferation involved in kidney development developmental process animal organ development cell proliferation involved in kidney development glomerular mesangium development tissue development regulation of cell proliferation involved in kidney development vasculature development circulatory system development glomerulus development glomerular mesangial cell proliferation glomerulus vasculature development kidney development interleukin-6 production positive regulation of interleukin-6 production regulation of interleukin-6 production ciliary neurotrophic factor-mediated signaling pathway pancreas development endocrine system development endocrine pancreas development interleukin-6-mediated signaling pathway response to interleukin-6 cellular response to interleukin-6 intracellular signal transduction regulation of intracellular signal transduction intracellular signaling cassette positive regulation of MAPK cascade positive regulation of intracellular signal transduction regulation of MAPK cascade MAPK cascade monocyte chemotaxis mononuclear cell migration myeloid leukocyte migration regulation of osteoblast differentiation cellular developmental process regulation of developmental process regulation of cell differentiation osteoblast differentiation positive regulation of developmental process positive regulation of osteoblast differentiation ossification positive regulation of cell differentiation cell differentiation tyrosine phosphorylation of STAT protein regulation of tyrosine phosphorylation of STAT protein positive regulation of tyrosine phosphorylation of STAT protein defense response to Gram-positive bacterium CD4-positive or CD8-positive, alpha-beta T cell lineage commitment adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains cell development mononuclear cell differentiation lymphocyte activation lymphocyte differentiation cell activation involved in immune response CD4-positive, alpha-beta T cell differentiation CD4-positive, alpha-beta T cell differentiation involved in immune response alpha-beta T cell differentiation involved in immune response leukocyte activation alpha-beta T cell differentiation T cell activation involved in immune response alpha-beta T cell activation involved in immune response T cell activation CD4-positive, alpha-beta T cell activation leukocyte activation involved in immune response alpha-beta T cell activation T cell differentiation CD4-positive, alpha-beta T cell lineage commitment lymphocyte activation involved in immune response T-helper cell differentiation alpha-beta T cell lineage commitment hemopoiesis cell activation T-helper cell lineage commitment T cell differentiation involved in immune response T cell lineage commitment adaptive immune response T-helper 17 cell lineage commitment positive T cell selection T cell selection T-helper 17 cell differentiation cell fate commitment leukocyte differentiation T-helper 17 type immune response	cell periphery cell surface membrane plasma membrane cellular anatomical entity external side of plasma membrane side of membrane protein-containing complex plasma membrane protein complex plasma membrane signaling receptor complex ciliary neurotrophic factor receptor complex membrane protein complex receptor complex interleukin-6 receptor complex cell periphery cell surface membrane plasma membrane cellular anatomical entity external side of plasma membrane side of membrane protein-containing complex plasma membrane protein complex plasma membrane signaling receptor complex ciliary neurotrophic factor receptor complex membrane protein complex receptor complex interleukin-6 receptor complex extracellular region extracellular space apical part of cell plasma membrane region apical plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A	IPR003530	Long hematopoietin receptor, soluble alpha chain, conserved site	Conserved Site
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR013151	Immunoglobulin	Domain
A	IPR007110	Immunoglobulin-like domain	Domain
A	IPR003599	Immunoglobulin subtype	Domain
A	IPR003598	Immunoglobulin subtype 2	Domain
A	IPR015321	Type I cytokine receptor, cytokine-binding domain	Domain
A	IPR003961	Fibronectin type III	Domain
A	IPR036116	Fibronectin type III superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: P08887	rheumatoid arthritis non-small cell lung carcinoma renal cell carcinoma juvenile idiopathic arthritis chromophobe renal cell carcinoma schizophrenia osteoporosis ankylosing spondylitis papillary renal cell carcinoma collecting duct carcinoma sarcomatoid renal cell carcinoma Still's disease tuberculosis lung carcinoma myocardial infarction rheumatoid arthritis non-small cell lung carcinoma renal cell carcinoma juvenile idiopathic arthritis chromophobe renal cell carcinoma schizophrenia osteoporosis ankylosing spondylitis papillary renal cell carcinoma collecting duct carcinoma sarcomatoid renal cell carcinoma Still's disease tuberculosis lung carcinoma myocardial infarction abdominal aortic aneurysm atopic eczema pancreatic ductal adenocarcinoma breast cancer Pick disease gastric cancer hereditary diffuse gastric adenocarcinoma subependymal giant cell astrocytoma large cell medulloblastoma ulcerative colitis malignant colon neoplasm medulloblastoma myopathy allergic rhinitis osteosarcoma atrial fibrillation pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia carpal tunnel syndrome pilocytic astrocytoma clear cell renal carcinoma gastric neoplasm Sjogren syndrome invasive ductal breast carcinoma temporal arteritis lung cancer malignant mesothelioma neuromyelitis optica ovarian cancer atypical teratoid rhabdoid tumor Castleman disease pituitary cancer renal carcinoma depressive disorder glioblastoma

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.