Annotations: 4X3A

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d4x3aa_	All beta proteins	beta-Trefoil	Cytokine	automated matches	automated matches	Chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Cytokine	8070385	3000648	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	IL1	e4x3aA1	A: beta duplicates or obligate multimers	X: beta-Trefoil (From Topology)	H: beta-Trefoil (From Topology)	T: beta-Trefoil	F: IL1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.80.10.50	Mainly Beta	Trefoil	Trefoil (Acidic Fibroblast Growth Factor, subunit A)		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00340	Interleukin-1 / 18 (IL1)	Interleukin-1 / 18	This family includes interleukin-1 and interleukin-18.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	IL-1 beta	protein binding binding interleukin-1 receptor binding signaling receptor binding cytokine receptor binding growth factor receptor binding molecular function activator activity molecular function regulator activity cytokine activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity	biological process involved in interspecies interaction between organisms response to stimulus detection of external biotic stimulus response to lipid response to other organism detection of lipopolysaccharide response to oxygen-containing compound response to external stimulus detection of molecule of bacterial origin detection of biotic stimulus response to lipopolysaccharide response to biotic stimulus detection of stimulus response to bacterium response to chemical biological process involved in interspecies interaction between organisms response to stimulus detection of external biotic stimulus response to lipid response to other organism detection of lipopolysaccharide response to oxygen-containing compound response to external stimulus detection of molecule of bacterial origin detection of biotic stimulus response to lipopolysaccharide response to biotic stimulus detection of stimulus response to bacterium response to chemical detection of chemical stimulus response to external biotic stimulus response to molecule of bacterial origin cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway signaling biological regulation response to cytokine cytokine-mediated signaling pathway cell communication response to peptide cellular response to cytokine stimulus cellular process signal transduction regulation of defense response regulation of response to external stimulus defense response positive regulation of biological process regulation of inflammatory response positive regulation of response to stimulus positive regulation of response to external stimulus positive regulation of inflammatory response regulation of response to stimulus regulation of response to stress response to stress positive regulation of defense response inflammatory response cellular biosynthetic process positive regulation of cellular metabolic process positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of biosynthetic process positive regulation of macromolecule metabolic process positive regulation of cellular process regulation of biosynthetic process cellular metabolic process regulation of cellular metabolic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of cellular biosynthetic process regulation of gene expression biosynthetic process positive regulation of gene expression regulation of macromolecule biosynthetic process metabolic process macromolecule metabolic process regulation of metabolic process positive regulation of cellular biosynthetic process sexual reproduction reproductive process cellular response to lipopolysaccharide cellular response to molecule of bacterial origin cellular response to oxygen-containing compound cellular response to biotic stimulus cellular response to chemical stimulus cellular response to lipid multicellular organismal process chemokine production cytokine production fever generation acute-phase response homeostatic process heat generation multicellular organismal-level homeostasis temperature homeostasis acute inflammatory response immune response immune system process inflammatory response to antigenic stimulus cell chemotaxis leukocyte chemotaxis involved in inflammatory response chemotaxis leukocyte migration involved in inflammatory response leukocyte migration taxis cell migration cell motility leukocyte chemotaxis locomotion response to virus cellular response to cold cellular response to stress response to abiotic stimulus response to cold response to temperature stimulus leukocyte activation involved in inflammatory response cell activation leukocyte activation system process transport steroid hormone secretion organic hydroxy compound transport hormone secretion localization secretion by cell signal release regulation of biological quality cortisol secretion secretion regulation of hormone levels lipid localization export from cell cell-cell signaling lipid transport establishment of localization endocrine hormone secretion endocrine process lipid export from cell macromolecule localization hormone transport glucocorticoid secretion corticosteroid hormone secretion positive regulation of response to biotic stimulus regulation of response to biotic stimulus pattern recognition receptor signaling pathway toll-like receptor signaling pathway immune response-activating signaling pathway immune response-regulating signaling pathway positive regulation of immune response innate immune response regulation of immune system process positive regulation of immune system process innate immune response-activating signaling pathway positive regulation of innate immune response regulation of innate immune response defense response to symbiont defense response to other organism activation of innate immune response regulation of immune response activation of immune response	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol membrane-bounded organelle intracellular organelle organelle lytic vacuole vacuole intracellular membrane-bounded organelle lysosome extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR000975	Interleukin-1 family	Family
A	IPR020877	Interleukin-1 conserved site	Conserved Site
A	IPR008996	Cytokine IL1/FGF	Homologous Superfamily

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.