Annotations: 1BND

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1bnda_	Small proteins	Cystine-knot cytokines	Cystine-knot cytokines	Neurotrophin	Brain-derived neurotrophic factor, BDNF	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d1bndb_	Small proteins	Cystine-knot cytokines	Cystine-knot cytokines	Neurotrophin	Neurotrophin 3, NT3	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	Neurotrophin	8026414	4003445	SCOP2 (2021-05-27)
A	SCOP2 Superfamily	Cystine-knot cytokines	8038793	3000846	SCOP2 (2021-05-27)
B	SCOP2B Superfamily	Cystine-knot cytokines	8038795	3000846	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	PF00243	e1bndA1	A: few secondary structure elements	X: Cystine-knot cytokines (From Topology)	H: Cystine-knot cytokines (From Topology)	T: Cystine-knot cytokines	F: PF00243	ECOD (1.6)
B	PF00243	e1bndB1	A: few secondary structure elements	X: Cystine-knot cytokines (From Topology)	H: Cystine-knot cytokines (From Topology)	T: Cystine-knot cytokines	F: PF00243	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.10.90.10	Mainly Beta	Ribbon	Cystine Knot Cytokines, subunit B	Cystine-knot cytokines	CATH (4.3.0)
B	2.10.90.10	Mainly Beta	Ribbon	Cystine Knot Cytokines, subunit B	Cystine-knot cytokines	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	BRAIN DERIVED NEUROTROPHIC FACTOR	protein binding binding molecular function activator activity signaling receptor binding molecular function regulator activity signaling receptor regulator activity growth factor activity receptor ligand activity signaling receptor activator activity nerve growth factor receptor binding cytokine receptor binding neurotrophin receptor binding tumor necrosis factor receptor superfamily binding death receptor binding	cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling biological regulation cell surface receptor protein tyrosine kinase signaling pathway cell communication brain-derived neurotrophic factor receptor signaling pathway cellular process signal transduction enzyme-linked receptor protein signaling pathway cellular response to growth factor stimulus cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling biological regulation cell surface receptor protein tyrosine kinase signaling pathway cell communication brain-derived neurotrophic factor receptor signaling pathway cellular process signal transduction enzyme-linked receptor protein signaling pathway cellular response to growth factor stimulus response to endogenous stimulus cellular response to nerve growth factor stimulus cellular response to endogenous stimulus nerve growth factor signaling pathway neurotrophin signaling pathway response to nerve growth factor response to growth factor positive regulation of nervous system development multicellular organismal process positive regulation of cellular component organization regulation of cellular component organization regulation of developmental process positive regulation of biological process regulation of nervous system development positive regulation of developmental process cellular component organization cellular component biogenesis multicellular organism development cellular component assembly cell junction assembly anatomical structure development regulation of multicellular organismal process regulation of synapse structure or activity synapse organization cellular component organization or biogenesis regulation of synapse assembly regulation of biological quality positive regulation of cellular process system development developmental process regulation of multicellular organismal development positive regulation of cellular component biogenesis nervous system development regulation of cellular component biogenesis regulation of cell junction assembly positive regulation of cell junction assembly regulation of synapse organization cell junction organization positive regulation of multicellular organismal process synapse assembly positive regulation of synapse assembly positive regulation of cell communication positive regulation of signal transduction regulation of brain-derived neurotrophic factor receptor signaling pathway regulation of signal transduction positive regulation of response to stimulus regulation of signaling positive regulation of brain-derived neurotrophic factor receptor signaling pathway regulation of response to stimulus regulation of cell communication positive regulation of signaling protein localization regulation of localization cellular localization regulation of protein localization localization protein localization to cell surface regulation of cellular localization cellular macromolecule localization macromolecule localization regulation of protein localization to cell surface positive regulation of phosphorylation regulation of protein modification process regulation of protein phosphorylation positive regulation of protein metabolic process regulation of peptidyl-serine phosphorylation positive regulation of cellular metabolic process positive regulation of phosphate metabolic process peptidyl-serine modification regulation of primary metabolic process positive regulation of metabolic process positive regulation of protein modification process peptidyl-serine phosphorylation regulation of phosphate metabolic process phosphate-containing compound metabolic process peptidyl-amino acid modification positive regulation of macromolecule metabolic process protein metabolic process positive regulation of protein phosphorylation phosphorus metabolic process protein modification process organonitrogen compound metabolic process protein phosphorylation positive regulation of phosphorus metabolic process phosphorylation cellular metabolic process regulation of protein metabolic process regulation of cellular metabolic process primary metabolic process regulation of macromolecule metabolic process positive regulation of peptidyl-serine phosphorylation macromolecule modification regulation of phosphorus metabolic process metabolic process regulation of phosphorylation macromolecule metabolic process regulation of metabolic process behavior system process learning or memory nervous system process cognition memory neuron apoptotic process negative regulation of neuron apoptotic process negative regulation of programmed cell death regulation of apoptotic process negative regulation of biological process regulation of programmed cell death cell death negative regulation of apoptotic process negative regulation of cellular process apoptotic process programmed cell death regulation of neuron apoptotic process cellular developmental process cell projection organization plasma membrane bounded cell projection morphogenesis cell development neuron projection development cell morphogenesis neurogenesis cell projection morphogenesis neuron differentiation neuron projection morphogenesis cell differentiation plasma membrane bounded cell projection organization generation of neurons anatomical structure morphogenesis neuron development negative regulation of muscle cell differentiation regulation of cell differentiation regulation of striated muscle cell differentiation muscle cell differentiation myotube differentiation muscle structure development negative regulation of myotube differentiation regulation of myotube differentiation negative regulation of cell differentiation negative regulation of developmental process negative regulation of striated muscle cell differentiation regulation of muscle cell differentiation striated muscle cell differentiation axonogenesis developmental growth cell growth collateral sprouting developmental cell growth growth axon development cell morphogenesis involved in neuron differentiation developmental growth involved in morphogenesis regulation of neuron projection development positive regulation of neuron projection development positive regulation of cell projection organization regulation of cell projection organization regulation of plasma membrane bounded cell projection organization regulation of protein binding positive regulation of molecular function regulation of molecular function regulation of receptor binding positive regulation of protein binding regulation of binding positive regulation of receptor binding positive regulation of binding trans-synaptic signaling modulation of chemical synaptic transmission cell-cell signaling chemical synaptic transmission synaptic signaling regulation of trans-synaptic signaling anterograde trans-synaptic signaling negative regulation of signaling negative regulation of cell communication negative regulation of apoptotic signaling pathway negative regulation of response to stimulus negative regulation of signal transduction apoptotic signaling pathway regulation of apoptotic signaling pathway regulation of neuron differentiation axon guidance neuron projection guidance peripheral nervous system development regulation of growth regulation of cellular component size regulation of neurogenesis regulation of cell development positive regulation of developmental growth positive regulation of collateral sprouting positive regulation of cell development regulation of collateral sprouting regulation of extent of cell growth positive regulation of cell differentiation regulation of axonogenesis positive regulation of neurogenesis regulation of anatomical structure morphogenesis positive regulation of axonogenesis regulation of cell size regulation of developmental growth positive regulation of cell growth regulation of cell growth positive regulation of growth regulation of anatomical structure size nerve development	somatodendritic compartment cell projection dendrite dendritic tree neuron projection cellular anatomical entity plasma membrane bounded cell projection intracellular anatomical structure cytoplasm membrane-bounded organelle membrane-enclosed lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen somatodendritic compartment cell projection dendrite dendritic tree neuron projection cellular anatomical entity plasma membrane bounded cell projection intracellular anatomical structure cytoplasm membrane-bounded organelle membrane-enclosed lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen endoplasmic reticulum lumen intracellular organelle organelle lumen organelle endoplasmic reticulum extracellular region perinuclear region of cytoplasm axon extracellular space transport vesicle synapse intracellular vesicle presynapse cytoplasmic vesicle synaptic vesicle cell junction secretory vesicle vesicle exocytic vesicle
B	NEUROTROPHIN 3	protein binding binding signaling receptor binding molecular function activator activity molecular function regulator activity signaling receptor regulator activity growth factor activity receptor ligand activity signaling receptor activator activity nerve growth factor receptor binding cytokine receptor binding neurotrophin receptor binding tumor necrosis factor receptor superfamily binding death receptor binding protein binding binding signaling receptor binding molecular function activator activity molecular function regulator activity signaling receptor regulator activity growth factor activity receptor ligand activity signaling receptor activator activity nerve growth factor receptor binding cytokine receptor binding neurotrophin receptor binding tumor necrosis factor receptor superfamily binding death receptor binding chemoattractant activity	cellular response to stimulus regulation of biological process cellular response to growth factor stimulus regulation of cellular process response to stimulus cell surface receptor signaling pathway signaling response to endogenous stimulus biological regulation cellular response to nerve growth factor stimulus cell communication cellular response to endogenous stimulus nerve growth factor signaling pathway neurotrophin signaling pathway cellular response to stimulus regulation of biological process cellular response to growth factor stimulus regulation of cellular process response to stimulus cell surface receptor signaling pathway signaling response to endogenous stimulus biological regulation cellular response to nerve growth factor stimulus cell communication cellular response to endogenous stimulus nerve growth factor signaling pathway neurotrophin signaling pathway response to nerve growth factor cellular process response to growth factor signal transduction positive chemotaxis chemotaxis positive regulation of locomotion regulation of response to external stimulus positive regulation of positive chemotaxis positive regulation of biological process response to external stimulus induction of positive chemotaxis regulation of chemotaxis positive regulation of chemotaxis positive regulation of response to stimulus regulation of positive chemotaxis positive regulation of response to external stimulus taxis regulation of response to stimulus response to chemical regulation of locomotion locomotion positive regulation of phosphorylation regulation of catalytic activity 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 phosphate-containing compound metabolic process positive regulation of macromolecule metabolic process phosphorus metabolic process protein modification process positive regulation of protein phosphorylation protein phosphorylation positive regulation of phosphorus metabolic process phosphorylation cellular metabolic process regulation of protein metabolic process regulation of cellular metabolic process primary metabolic process regulation of molecular function positive regulation of kinase activity regulation of kinase activity activation of protein kinase activity macromolecule modification regulation of phosphorus metabolic process metabolic process macromolecule metabolic process regulation of metabolic process regulation of protein modification process regulation of protein phosphorylation positive regulation of protein metabolic process positive regulation of cellular metabolic process positive regulation of molecular function positive regulation of protein modification process protein metabolic process activation of protein kinase B activity positive regulation of protein kinase activity positive regulation of cellular process organonitrogen compound metabolic process positive regulation of transferase activity positive regulation of catalytic activity regulation of protein kinase activity regulation of macromolecule metabolic process regulation of phosphorylation regulation of localization import into cell regulation of cellular component organization positive regulation of cellular component organization receptor internalization transport regulation of receptor internalization vesicle-mediated transport cellular component organization localization positive regulation of endocytosis cellular component organization or biogenesis positive regulation of receptor-mediated endocytosis regulation of endocytosis regulation of transport regulation of receptor-mediated endocytosis regulation of vesicle-mediated transport establishment of localization positive regulation of receptor internalization positive regulation of transport endocytosis receptor-mediated endocytosis cell-cell signaling regulation of peptidyl-serine phosphorylation peptidyl-serine modification peptidyl-serine phosphorylation peptidyl-amino acid modification positive regulation of peptidyl-serine phosphorylation regulation of apoptotic process apoptotic process regulation of programmed cell death cell death programmed cell death behavior multicellular organismal process system process learning or memory nervous system process cognition memory negative regulation of biological process negative regulation of phosphate metabolic process peptidyl-tyrosine modification negative regulation of cellular metabolic process negative regulation of protein modification process negative regulation of cellular process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process negative regulation of peptidyl-tyrosine phosphorylation negative regulation of metabolic process regulation of peptidyl-tyrosine phosphorylation negative regulation of protein phosphorylation negative regulation of phosphorus metabolic process negative regulation of phosphorylation peptidyl-tyrosine phosphorylation neuron apoptotic process negative regulation of neuron apoptotic process negative regulation of programmed cell death negative regulation of apoptotic process regulation of neuron apoptotic process cellular developmental process cell projection organization plasma membrane bounded cell projection morphogenesis cell development neuron projection development cell morphogenesis neurogenesis multicellular organism development cell projection morphogenesis neuron differentiation neuron projection morphogenesis cell differentiation anatomical structure development system development developmental process plasma membrane bounded cell projection organization nervous system development generation of neurons anatomical structure morphogenesis neuron development cell population proliferation positive regulation of cell population proliferation regulation of cell population proliferation trans-synaptic signaling regulation of signaling modulation of chemical synaptic transmission chemical synaptic transmission synaptic signaling regulation of trans-synaptic signaling anterograde trans-synaptic signaling regulation of cell communication positive regulation of cell communication positive regulation of signal transduction regulation of signal transduction regulation of MAP kinase activity intracellular signal transduction positive regulation of protein serine/threonine kinase activity intracellular signaling cassette positive regulation of MAP kinase activity positive regulation of MAPK cascade positive regulation of intracellular signal transduction regulation of MAPK cascade regulation of protein serine/threonine kinase activity regulation of intracellular signal transduction MAPK cascade positive regulation of signaling regulation of developmental process regulation of cell differentiation regulation of neuron differentiation peripheral nervous system development regulation of cell motility positive regulation of cell migration positive regulation of cell motility regulation of cell migration cell migration cell motility activation of GTPase activity positive regulation of hydrolase activity regulation of hydrolase activity regulation of GTPase activity positive regulation of GTPase activity nerve development cell surface receptor protein tyrosine kinase signaling pathway enzyme-linked receptor protein signaling pathway positive regulation of peptidyl-tyrosine phosphorylation	somatodendritic compartment cell projection dendrite dendritic tree neuron projection cellular anatomical entity plasma membrane bounded cell projection extracellular region axon extracellular space membrane-bounded organelle intracellular anatomical structure transport vesicle synapse somatodendritic compartment cell projection dendrite dendritic tree neuron projection cellular anatomical entity plasma membrane bounded cell projection extracellular region axon extracellular space membrane-bounded organelle intracellular anatomical structure transport vesicle synapse intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle presynapse cytoplasmic vesicle synaptic vesicle organelle cell junction secretory vesicle cytoplasm vesicle exocytic vesicle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR020408	Nerve growth factor-like	Family
A	IPR019846	Nerve growth factor conserved site	Conserved Site
A	IPR029034	Cystine-knot cytokine	Homologous Superfamily
A	IPR020430	Brain-derived neurotrophic factor	Family
A	IPR002072	Nerve growth factor-related	Domain
B	IPR020408	Nerve growth factor-like	Family
B	IPR019846	Nerve growth factor conserved site	Conserved Site
B	IPR029034	Cystine-knot cytokine	Homologous Superfamily
B	IPR045815	Neutrophin-3, N-terminal	Domain
B	IPR002072	Nerve growth factor-related	Domain
B	IPR015578	Neurotrophin-3	Family

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.