3QS7

Crystal structure of a human Flt3 ligand-receptor ternary complex

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	4-helical cytokines	8037098	3001717	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	4-helical cytokines	8037098	3001717	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	4-helical cytokines	8037098	3001717	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	4-helical cytokines	8037098	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)
B	Flt3_lig	e3qs7B1	A: alpha bundles	X: Ferritin/Heme oxygenase/4-helical cytokines	H: 4-helical cytokines (From Topology)	T: 4-helical cytokines	F: Flt3_lig	ECOD (1.6)
D	Flt3_lig	e3qs7D1	A: alpha bundles	X: Ferritin/Heme oxygenase/4-helical cytokines	H: 4-helical cytokines (From Topology)	T: 4-helical cytokines	F: Flt3_lig	ECOD (1.6)
A	Flt3_lig	e3qs7A1	A: alpha bundles	X: Ferritin/Heme oxygenase/4-helical cytokines	H: 4-helical cytokines (From Topology)	T: 4-helical cytokines	F: Flt3_lig	ECOD (1.6)
C	Flt3_lig	e3qs7C1	A: alpha bundles	X: Ferritin/Heme oxygenase/4-helical cytokines	H: 4-helical cytokines (From Topology)	T: 4-helical cytokines	F: Flt3_lig	ECOD (1.6)
E	I-set_12	e3qs7E1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: I-set_12	ECOD (1.6)
E	I-set_13	e3qs7E4	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: I-set_13	ECOD (1.6)
E	I-set	e3qs7E3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: I-set	ECOD (1.6)
E	I-set_11	e3qs7E2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: I-set_11	ECOD (1.6)
F	I-set_12	e3qs7F1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: I-set_12	ECOD (1.6)
F	I-set_13	e3qs7F4	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: I-set_13	ECOD (1.6)
F	I-set	e3qs7F3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: I-set	ECOD (1.6)
F	I-set_11	e3qs7F2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: I-set_11	ECOD (1.6)
G	I-set_12	e3qs7G5	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: I-set_12	ECOD (1.6)
G	I-set_13	e3qs7G6	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: I-set_13	ECOD (1.6)
H	I-set_12	e3qs7H1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: I-set_12	ECOD (1.6)
H	I-set_13	e3qs7H3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: I-set_13	ECOD (1.6)
H	I-set_11	e3qs7H2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: I-set_11	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF02947	flt3 ligand (Flt3_lig)	flt3 ligand	The flt3 ligand is a short chain cytokine with a 4 helical bundle fold.	Domain
E, F, G, H	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, B, C, D	SL cytokine	protein binding binding signaling receptor binding molecular function activator activity molecular function regulator activity cytokine activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity protein tyrosine kinase binding kinase binding receptor tyrosine kinase binding enzyme binding protein kinase binding	regulation of biological process cell population proliferation regulation of cellular process positive regulation of cell population proliferation regulation of cell population proliferation biological regulation positive regulation of biological process cellular process positive regulation of cellular process developmental process multicellular organismal process cellular developmental process hemopoiesis animal organ development regulation of biological process cell population proliferation regulation of cellular process positive regulation of cell population proliferation regulation of cell population proliferation biological regulation positive regulation of biological process cellular process positive regulation of cellular process developmental process multicellular organismal process cellular developmental process hemopoiesis animal organ development cell development embryo development multicellular organism development embryonic hemopoiesis cell differentiation anatomical structure development embryonic organ development cellular response to stimulus response to stimulus signaling signal transduction cell communication	cellular anatomical structure membrane extracellular region cell surface intracellular anatomical structure cytoplasm cytosol cell periphery plasma membrane extracellular space
E, F, G, H	FL cytokine receptor	transcription factor binding RNA polymerase II-specific DNA-binding transcription factor binding nuclear receptor binding protein binding binding nuclear glucocorticoid receptor binding DNA-binding transcription factor binding molecular transducer activity catalytic activity, acting on a protein kinase activity protein kinase activity signaling receptor activity transferase activity phosphotransferase activity, alcohol group as acceptor transcription factor binding RNA polymerase II-specific DNA-binding transcription factor binding nuclear receptor binding protein binding binding nuclear glucocorticoid receptor binding DNA-binding transcription factor binding molecular transducer activity catalytic activity, acting on a protein kinase activity protein kinase activity signaling receptor activity transferase activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups protein tyrosine kinase activity transmembrane receptor protein tyrosine kinase activity transmembrane receptor protein kinase activity transmembrane signaling receptor activity catalytic activity cytokine receptor activity immune receptor activity growth factor binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding protein-containing complex binding phosphatidylinositol 3-kinase activator activity enzyme regulator activity molecular function regulator activity phosphatidylinositol 3-kinase regulator activity kinase regulator activity vascular endothelial growth factor receptor activity	developmental process cellular developmental process pro-B cell differentiation hemopoiesis cell differentiation lymphoid progenitor cell differentiation anatomical structure development cell development cellular process hematopoietic progenitor cell differentiation cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus developmental process cellular developmental process pro-B cell differentiation hemopoiesis cell differentiation lymphoid progenitor cell differentiation anatomical structure development cell development cellular process hematopoietic progenitor cell differentiation 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 signal transduction multicellular organismal process B cell activation cell activation mononuclear cell differentiation lymphocyte differentiation lymphocyte activation leukocyte activation B cell differentiation immune system process leukocyte differentiation multicellular organismal-level homeostasis leukocyte homeostasis homeostatic process homeostasis of number of cells regulation of apoptotic process apoptotic process regulation of programmed cell death cell death programmed cell death positive regulation of cell communication regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction positive regulation of signal transduction positive regulation of biological process regulation of signal transduction intracellular signal transduction positive regulation of response to stimulus regulation of intracellular signal transduction intracellular signaling cassette positive regulation of cellular process regulation of signaling positive regulation of intracellular signal transduction positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction regulation of response to stimulus regulation of cell communication phosphatidylinositol 3-kinase/protein kinase B signal transduction positive regulation of signaling cell population proliferation mononuclear cell proliferation lymphocyte proliferation leukocyte proliferation protein phosphorylation protein autophosphorylation phosphorylation primary metabolic process macromolecule modification phosphate-containing compound metabolic process metabolic process protein metabolic process macromolecule metabolic process protein modification process phosphorus metabolic process myeloid progenitor cell differentiation positive regulation of cell population proliferation regulation of cell population proliferation peptidyl-tyrosine modification peptidyl-amino acid modification peptidyl-tyrosine phosphorylation positive regulation of phosphorylation regulation of catalytic activity regulation of transferase activity positive regulation of phosphate metabolic process regulation of MAP kinase activity regulation of primary metabolic process positive regulation of protein serine/threonine kinase activity positive regulation of metabolic process regulation of phosphate metabolic process positive regulation of macromolecule metabolic process positive regulation of protein phosphorylation positive regulation of MAP kinase activity positive regulation of phosphorus metabolic process positive regulation of MAPK cascade regulation of protein metabolic process regulation of MAPK cascade regulation of molecular function positive regulation of kinase activity regulation of kinase activity regulation of protein serine/threonine kinase activity regulation of phosphorus metabolic process regulation of metabolic process regulation of protein modification process regulation of protein phosphorylation positive regulation of protein metabolic process positive regulation of molecular function positive regulation of protein modification process positive regulation of protein kinase activity positive regulation of transferase activity positive regulation of catalytic activity regulation of protein kinase activity regulation of macromolecule metabolic process MAPK cascade regulation of phosphorylation tyrosine phosphorylation of STAT protein cell surface receptor signaling pathway via STAT positive regulation of peptidyl-tyrosine phosphorylation regulation of tyrosine phosphorylation of STAT protein regulation of peptidyl-tyrosine phosphorylation positive regulation of tyrosine phosphorylation of STAT protein cell surface receptor signaling pathway via JAK-STAT cell surface receptor protein tyrosine kinase signaling pathway enzyme-linked receptor protein signaling pathway dendritic cell differentiation common myeloid progenitor cell proliferation animal organ regeneration animal organ development regeneration response to lipid response to endogenous stimulus response to glucocorticoid cellular response to organic cyclic compound cellular response to glucocorticoid stimulus cellular response to corticosteroid stimulus cellular response to endogenous stimulus response to corticosteroid cellular response to chemical stimulus response to hormone response to steroid hormone cellular response to lipid cellular response to steroid hormone stimulus response to organic cyclic compound cellular response to hormone stimulus	cell periphery cellular anatomical structure plasma membrane membrane protein-containing complex receptor complex membrane-bounded organelle intracellular anatomical structure membrane-enclosed lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen endoplasmic reticulum lumen intracellular organelle cell periphery cellular anatomical structure plasma membrane membrane protein-containing complex receptor complex membrane-bounded organelle intracellular anatomical structure membrane-enclosed lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen endoplasmic reticulum lumen intracellular organelle organelle lumen organelle endoplasmic reticulum cytoplasm endosome membrane endosome intracellular vesicle cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane cytoplasmic vesicle vesicle organelle membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR004213	Flt3 ligand	Family
A, B, C, D	IPR009079	Four-helical cytokine-like, core	Homologous Superfamily
E, F, G, H	IPR017441	Protein kinase, ATP binding site	Binding Site
E, F, G, H	IPR001824	Tyrosine-protein kinase, receptor class III, conserved site	Conserved Site
E, F, G, H	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
E, F, G, H	IPR008266	Tyrosine-protein kinase, active site	Active Site
E, F, G, H	IPR020635	Tyrosine-protein kinase, catalytic domain	Domain
E, F, G, H	IPR000719	Protein kinase domain	Domain
E, F, G, H	IPR001245	Serine-threonine/tyrosine-protein kinase, catalytic domain	Domain
E, F, G, H	IPR013151	Immunoglobulin-like beta-sandwich domain	Domain
E, F, G, H	IPR011009	Protein kinase-like domain superfamily	Homologous Superfamily
E, F, G, H	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
E, F, G, H	IPR050122	Receptor Tyrosine Kinase	Family
E, F, G, H	IPR007110	Immunoglobulin-like domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
E, F, G, H	Pharos: P36888	acute myeloid leukemia acute promyelocytic leukemia acute biphenotypic leukemia Leukocytosis cancer gastrointestinal stromal tumor hepatocellular carcinoma malignant mesothelioma medullary thyroid gland carcinoma osteosarcoma acute T cell leukemia Burkitt lymphoma renal cell carcinoma childhood acute lymphoblastic leukemia tuberculosis acute myeloid leukemia acute promyelocytic leukemia acute biphenotypic leukemia Leukocytosis cancer gastrointestinal stromal tumor hepatocellular carcinoma malignant mesothelioma medullary thyroid gland carcinoma osteosarcoma acute T cell leukemia Burkitt lymphoma renal cell carcinoma childhood acute lymphoblastic leukemia tuberculosis Hashimoto thyroiditis hypothyroidism MALT lymphoma acute lymphoblastic leukemia medulloblastoma pancreatic intraductal papillary-mucinous carcinoma acute myelomonocytic leukemia M4 aggressive systemic mastocytosis congenital anemia thrombotic disease exocrine pancreatic carcinoma hematologic disease leukemia, acute lymphocytic, susceptibility to, 1 lymphatic system disease mast cell leukemia pancreatic intraductal papillary-mucinous neoplasm acute myeloid leukemia with minimal differentiation primary myelofibrosis tenosynovial giant cell tumor

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.