Annotations: 1B98

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1b98a_	Small proteins	Cystine-knot cytokines	Cystine-knot cytokines	Neurotrophin	Neurotrophin 4, NT4	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B [auth M]	d1b98m_	Small proteins	Cystine-knot cytokines	Cystine-knot cytokines	Neurotrophin	Neurotrophin 4, NT4	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	SCOP2B Superfamily	Cystine-knot cytokines	8036419	3000846	SCOP2B (2022-06-29)
B [auth M]	SCOP2B Superfamily	Cystine-knot cytokines	8036419	3000846	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	NGF	e1b98A1	A: few secondary structure elements	X: Cystine-knot cytokines (From Topology)	H: Cystine-knot cytokines (From Topology)	T: Cystine-knot cytokines	F: NGF	ECOD (1.6)
B [auth M]	NGF	e1b98M1	A: few secondary structure elements	X: Cystine-knot cytokines (From Topology)	H: Cystine-knot cytokines (From Topology)	T: Cystine-knot cytokines	F: NGF	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 [auth M]	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, B [auth M]	PROTEIN (NEUROTROPHIN-4)	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 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 developmental process multicellular organismal process sensory organ development animal organ development sensory organ boundary specification pattern specification process formation of anatomical boundary regionalization anatomical structure morphogenesis multicellular organism development anatomical structure formation involved in morphogenesis anatomical structure development formation of animal organ boundary animal organ formation animal organ morphogenesis adult locomotory behavior behavior adult behavior locomotory behavior mechanoreceptor differentiation cellular developmental process nervous system development generation of neurons neurogenesis neuron differentiation cell differentiation system development epidermis development tissue development 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 cell projection organization plasma membrane bounded cell projection morphogenesis cell development neuron projection development cell morphogenesis cellular component organization cell projection morphogenesis neuron projection morphogenesis cellular component organization or biogenesis plasma membrane bounded cell projection organization neuron development cell fate determination ganglion mother cell fate determination cell fate commitment system process learning or memory long-term memory nervous system process cognition memory trans-synaptic signaling regulation of signaling modulation of chemical synaptic transmission cell-cell signaling chemical synaptic transmission synaptic signaling regulation of trans-synaptic signaling anterograde trans-synaptic signaling regulation of cell communication cell surface receptor protein tyrosine kinase signaling pathway enzyme-linked receptor protein signaling pathway tongue development taste bud development nerve development innervation epithelium development ameloblast differentiation columnar/cuboidal epithelial cell differentiation epithelial cell differentiation	somatodendritic compartment cell projection cellular anatomical structure dendrite dendritic tree neuron projection plasma membrane bounded cell projection extracellular region axon extracellular space membrane-bounded organelle intracellular anatomical structure transport vesicle synapse somatodendritic compartment cell projection cellular anatomical structure dendrite dendritic tree neuron projection 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, B [auth M]	IPR020408	Nerve growth factor-like	Family
A, B [auth M]	IPR019846	Nerve growth factor conserved site	Conserved Site
A, B [auth M]	IPR029034	Cystine-knot cytokine	Homologous Superfamily
A, B [auth M]	IPR002072	Nerve growth factor-related	Domain
A, B [auth M]	IPR020432	Neurotrophin-4	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B [auth M]	Pharos: P34130	glaucoma 1, open angle, O intellectual disability Nerve Degeneration autism glaucoma bipolar disorder

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.