4EKX

Crystal Structure of YLDV 14L IL-18 Binding Protein in Complex with Human IL-18

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

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d4ekxb_	All beta proteins	beta-Trefoil	Cytokine	Interleukin-1 (IL-1)	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C [auth D]	d4ekxd_	All beta proteins	beta-Trefoil	Cytokine	Interleukin-1 (IL-1)	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)
B	SCOP2B Superfamily	Cytokine	8036000	3000648	SCOP2B (2021-05-27)
C [auth D]	SCOP2B Superfamily	Cytokine	8036000	3000648	SCOP2B (2021-05-27)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A [auth C]	PF22009	e4ekxC2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF22009	ECOD (1.6)
D [auth A]	PF22009	e4ekxA2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF22009	ECOD (1.6)
B	PF00340	e4ekxB1	A: beta duplicates or obligate multimers	X: beta-Trefoil (From Topology)	H: beta-Trefoil (From Topology)	T: beta-Trefoil	F: PF00340	ECOD (1.6)
C [auth D]	PF00340	e4ekxD1	A: beta duplicates or obligate multimers	X: beta-Trefoil (From Topology)	H: beta-Trefoil (From Topology)	T: beta-Trefoil	F: PF00340	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A [auth C]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
D [auth A]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B	2.80.10.50	Mainly Beta	Trefoil	Trefoil (Acidic Fibroblast Growth Factor, subunit A)		CATH (4.3.0)
C [auth D]	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 [auth C], D [auth A]	PF22009	Yaba-Like Disease Virus IL18BP (YLDV-IL18BP-like)	Yaba-Like Disease Virus IL18BP	YLDV-IL18BP is unique among the diverse family of mammalian and poxvirus IL18BPs in that it uses a bivalent binding mode and a unique set of interacting residues for binding IL18 [1]. YLDV-IL18BP binds to the same surface of IL18 used by other IL18BP ...	YLDV-IL18BP is unique among the diverse family of mammalian and poxvirus IL18BPs in that it uses a bivalent binding mode and a unique set of interacting residues for binding IL18 [1]. YLDV-IL18BP binds to the same surface of IL18 used by other IL18BPs, suggesting that all IL18BPs use a conserved inhibitory mechanism by blocking a putative receptor-binding site on IL18. This domain adopts a typical Ig-like fold.	Domain
B, C [auth D]	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 [auth C], D [auth A]	14L protein	protein serine/threonine kinase activity catalytic activity, acting on a protein kinase activity protein kinase activity transferase activity catalytic activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups peptidase activity hydrolase activity	organonitrogen compound metabolic process proteolysis metabolic process primary metabolic process protein metabolic process macromolecule metabolic process	-
B, C [auth D]	Interleukin-18	protein binding binding signaling receptor binding cytokine receptor binding interleukin-18 receptor binding molecular function activator activity molecular function regulator activity cytokine activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity	regulation of biological process cell adhesion regulation of cellular process regulation of cell adhesion biological regulation cellular process adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains multicellular organismal process regulation of immune effector process lymphocyte mediated immunity T cell mediated immunity positive regulation of leukocyte mediated immunity response to stimulus T cell cytokine production regulation of biological process cell adhesion regulation of cellular process regulation of cell adhesion biological regulation cellular process adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains multicellular organismal process regulation of immune effector process lymphocyte mediated immunity T cell mediated immunity positive regulation of leukocyte mediated immunity response to stimulus T cell cytokine production positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of immune response T-helper 1 cell cytokine production cytokine production leukocyte mediated immunity regulation of immune system process positive regulation of macromolecule metabolic process positive regulation of adaptive immune response positive regulation of T cell cytokine production positive regulation of immune system process regulation of T cell mediated immunity regulation of cytokine production involved in immune response immune response regulation of adaptive immune response cellular metabolic process regulation of cellular metabolic process T-helper 1 type immune response regulation of T-helper 1 type immune response immune effector process regulation of gene expression regulation of leukocyte mediated immunity biosynthetic process regulation of response to stimulus positive regulation of production of molecular mediator of immune response positive regulation of multicellular organismal process regulation of immune response metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of production of molecular mediator of immune response positive regulation of cytokine production regulation of metabolic process positive regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of lymphocyte mediated immunity cellular biosynthetic process positive regulation of T-helper 1 cell cytokine production positive regulation of biological process positive regulation of cellular metabolic process regulation of T-helper 1 cell cytokine production positive regulation of response to stimulus regulation of T cell cytokine production CD4-positive, alpha-beta T cell cytokine production regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of biosynthetic process regulation of cytokine production positive regulation of immune effector process regulation of multicellular organismal process cytokine production involved in immune response positive regulation of cellular process production of molecular mediator of immune response regulation of biosynthetic process positive regulation of T-helper 1 type immune response regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process adaptive immune response regulation of cellular biosynthetic process regulation of lymphocyte mediated immunity positive regulation of gene expression immune system process positive regulation of T cell mediated immunity positive regulation of cytokine production involved in immune response positive regulation of cellular biosynthetic process regulation of defense response regulation of response to external stimulus defense response response to external stimulus regulation of inflammatory response positive regulation of response to external stimulus positive regulation of inflammatory response regulation of response to stress response to stress positive regulation of defense response inflammatory response developmental process blood vessel morphogenesis tube development angiogenesis vasculature development circulatory system development multicellular organism development anatomical structure morphogenesis tube morphogenesis anatomical structure development anatomical structure formation involved in morphogenesis blood vessel development system development establishment of skin barrier epithelium development skin development skin epidermis development epidermis development animal organ development tissue development interleukin-13 production positive regulation of interleukin-13 production regulation of interleukin-13 production regulation of developmental process cellular developmental process negative regulation of developmental process negative regulation of biological process regulation of cell differentiation muscle structure development negative regulation of myoblast differentiation cell differentiation negative regulation of cellular process regulation of myoblast differentiation negative regulation of cell differentiation myoblast differentiation cell population proliferation chemical homeostasis homeostatic process triglyceride homeostasis acylglycerol homeostasis lipid homeostasis neutrophil activation cell activation myeloid leukocyte activation granulocyte activation leukocyte activation signaling cell-cell signaling cell communication cellular response to stimulus biological process involved in interspecies interaction between organisms response to lipid response to other organism cellular response to lipopolysaccharide response to oxygen-containing compound cellular response to molecule of bacterial origin response to lipopolysaccharide cellular response to oxygen-containing compound response to biotic stimulus cellular response to biotic stimulus cellular response to chemical stimulus response to chemical response to bacterium cellular response to lipid response to external biotic stimulus response to molecule of bacterial origin sterol homeostasis cholesterol homeostasis positive regulation of cell population proliferation regulation of leukocyte activation regulation of cell activation lymphocyte activation positive regulation of natural killer cell proliferation leukocyte proliferation positive regulation of lymphocyte activation positive regulation of cell activation lymphocyte proliferation positive regulation of leukocyte activation positive regulation of mononuclear cell proliferation regulation of natural killer cell activation regulation of lymphocyte proliferation regulation of leukocyte proliferation positive regulation of lymphocyte proliferation positive regulation of natural killer cell activation natural killer cell activation natural killer cell proliferation mononuclear cell proliferation regulation of cell population proliferation positive regulation of leukocyte proliferation regulation of mononuclear cell proliferation regulation of lymphocyte activation regulation of natural killer cell proliferation positive regulation of cell communication regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction positive regulation of signal transduction regulation of signal transduction intracellular signal transduction regulation of intracellular signal transduction intracellular signaling cassette signal transduction regulation of signaling positive regulation of intracellular signal transduction positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction regulation of cell communication phosphatidylinositol 3-kinase/protein kinase B signal transduction positive regulation of signaling macrophage derived foam cell differentiation positive regulation of developmental process foam cell differentiation positive regulation of cell differentiation regulation of macrophage derived foam cell differentiation positive regulation of macrophage derived foam cell differentiation regulation of alpha-beta T cell activation positive regulation of T cell differentiation alpha-beta T cell differentiation involved in immune response regulation of cell development type 2 immune response T cell activation regulation of type 2 immune response regulation of T-helper cell differentiation alpha-beta T cell activation positive regulation of CD4-positive, alpha-beta T cell differentiation T-helper cell differentiation positive regulation of cell development regulation of leukocyte cell-cell adhesion positive regulation of alpha-beta T cell differentiation cell development positive regulation of leukocyte cell-cell adhesion CD4-positive, alpha-beta T cell differentiation positive regulation of T-helper cell differentiation positive regulation of cell-cell adhesion regulation of T cell differentiation alpha-beta T cell differentiation T cell activation involved in immune response leukocyte activation involved in immune response regulation of T-helper 2 cell differentiation regulation of cell-cell adhesion hemopoiesis positive regulation of T-helper 2 cell differentiation regulation of CD4-positive, alpha-beta T cell activation regulation of leukocyte differentiation mononuclear cell differentiation lymphocyte differentiation cell activation involved in immune response CD4-positive, alpha-beta T cell differentiation involved in immune response T cell differentiation positive regulation of T cell activation positive regulation of alpha-beta T cell activation leukocyte differentiation regulation of CD4-positive, alpha-beta T cell differentiation regulation of alpha-beta T cell differentiation leukocyte cell-cell adhesion positive regulation of CD4-positive, alpha-beta T cell activation cell-cell adhesion alpha-beta T cell activation involved in immune response positive regulation of hemopoiesis CD4-positive, alpha-beta T cell activation T-helper 2 cell differentiation lymphocyte activation involved in immune response regulation of lymphocyte differentiation regulation of multicellular organismal development positive regulation of cell adhesion regulation of T cell activation T cell differentiation involved in immune response positive regulation of type 2 immune response regulation of hemopoiesis positive regulation of leukocyte differentiation positive regulation of lymphocyte differentiation defense response to symbiont leukocyte mediated cytotoxicity defense response to other organism natural killer cell mediated cytotoxicity innate immune response natural killer cell mediated immunity cell killing positive regulation of tissue remodeling tissue remodeling regulation of tissue remodeling sleep positive regulation of T cell proliferation positive regulation of activated T cell proliferation regulation of activated T cell proliferation activated T cell proliferation T cell proliferation regulation of T cell proliferation adaptive thermogenesis multicellular organismal-level homeostasis regulation of cold-induced thermogenesis cold-induced thermogenesis temperature homeostasis positive regulation of cold-induced thermogenesis regulation of chemokine production chemokine production positive regulation of chemokine production positive regulation of DNA-binding transcription factor activity positive regulation of NF-kappaB transcription factor activity RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process positive regulation of molecular function nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process primary metabolic process nucleobase-containing compound biosynthetic process nucleic acid metabolic process regulation of molecular function regulation of DNA-binding transcription factor activity regulation of DNA-templated transcription positive regulation of phosphorylation positive regulation of phosphate metabolic process regulation of phosphate metabolic process peptidyl-amino acid modification phosphate-containing compound metabolic process protein modification process phosphorus metabolic process positive regulation of protein phosphorylation tyrosine phosphorylation of STAT protein protein phosphorylation positive regulation of phosphorus metabolic process phosphorylation regulation of protein metabolic process macromolecule modification regulation of phosphorus metabolic process cell surface receptor signaling pathway via STAT regulation of protein modification process regulation of protein phosphorylation positive regulation of protein metabolic process peptidyl-tyrosine modification positive regulation of peptidyl-tyrosine phosphorylation positive regulation of protein modification process protein metabolic process organonitrogen compound metabolic process cell surface receptor signaling pathway regulation of tyrosine phosphorylation of STAT protein regulation of peptidyl-tyrosine phosphorylation positive regulation of tyrosine phosphorylation of STAT protein regulation of phosphorylation peptidyl-tyrosine phosphorylation cell surface receptor signaling pathway via JAK-STAT granulocyte macrophage colony-stimulating factor production organonitrogen compound biosynthetic process positive regulation of granulocyte macrophage colony-stimulating factor production regulation of granulocyte macrophage colony-stimulating factor production regulation of smooth muscle cell proliferation smooth muscle cell proliferation positive regulation of smooth muscle cell proliferation muscle cell proliferation regulation of non-canonical NF-kappaB signal transduction non-canonical NF-kappaB signal transduction positive regulation of non-canonical NF-kappaB signal transduction interleukin-17 production regulation of interleukin-17 production positive regulation of interleukin-17 production positive regulation of neuroinflammatory response regulation of neuroinflammatory response neuroinflammatory response positive regulation of DNA-templated transcription transcription by RNA polymerase II regulation of transcription by RNA polymerase II positive regulation of nucleobase-containing compound metabolic process positive regulation of transcription by RNA polymerase II positive regulation of RNA metabolic process positive regulation of RNA biosynthetic process cellular response to interleukin-18 response to interleukin-18 response to cytokine cytokine-mediated signaling pathway interleukin-18-mediated signaling pathway response to peptide cellular response to cytokine stimulus regulation of type II interferon production type II interferon production positive regulation of type II interferon production defense response to Gram-positive bacterium defense response to bacterium regulation of NK T cell proliferation positive regulation of NK T cell proliferation positive regulation of alpha-beta T cell proliferation alpha-beta T cell proliferation NK T cell proliferation positive regulation of NK T cell activation regulation of alpha-beta T cell proliferation regulation of NK T cell activation NK T cell activation	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth C], D [auth A]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B, C [auth D]	IPR000975	Interleukin-1 family	Family
B, C [auth D]	IPR015529	Interleukin-18	Family
B, C [auth D]	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 R01GM133198.