Annotations: 9FIK

Structure of the FAB fragment of the Antibody NTF30037 in complex with NTF3

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
SAbDab Antibody 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)
A	SCOP2B Superfamily	Cystine-knot cytokines	8038795	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)
C	Carb_anhydrase	e9fikC01	A: a/b three-layered sandwiches	X: ATP-grasp_6	H: ATP-grasp_6	T: ATP-grasp_6	F: Carb_anhydrase	ECOD (v294.1)
B	Carb_anhydrase	e9fikB01	A: a/b three-layered sandwiches	X: ATP-grasp_6	H: ATP-grasp_6	T: ATP-grasp_6	F: Carb_anhydrase	ECOD (v294.1)
A	Carb_anhydrase	e9fikA01	A: a/b three-layered sandwiches	X: ATP-grasp_6	H: ATP-grasp_6	T: ATP-grasp_6	F: Carb_anhydrase	ECOD (v294.1)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C	Light Chain	IGLV3	Lambda	neurotrophin-3	SAbDab (2026-04-24)
B	Heavy Chain	IGHV3	-	neurotrophin-3	SAbDab (2026-04-24)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C	NTF30037 Light Chain	-	-	-
B	NTF30037 Heavy Chain	-	-	-
A	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 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 positive regulation of cellular process 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 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 regulation of signal transduction intracellular signal transduction regulation of intracellular signal transduction intracellular signaling cassette 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 neuron apoptotic process negative regulation of neuron apoptotic process negative regulation of programmed cell death negative regulation of biological process negative regulation of apoptotic process negative regulation of cellular process regulation of neuron apoptotic process multicellular organismal 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 modulation of chemical synaptic transmission chemical synaptic transmission synaptic signaling regulation of trans-synaptic signaling anterograde trans-synaptic signaling positive regulation of MAPK cascade regulation of MAPK cascade MAPK cascade regulation of cell motility positive regulation of cell migration positive regulation of cell motility regulation of cell migration cell migration cell motility cell surface receptor protein tyrosine kinase signaling pathway enzyme-linked receptor protein signaling pathway nerve development	somatodendritic compartment cell projection cellular anatomical structure dendrite dendritic tree neuron projection plasma membrane bounded cell projection extracellular region axon membrane-bounded organelle intracellular anatomical structure transport vesicle synapse intracellular vesicle somatodendritic compartment cell projection cellular anatomical structure dendrite dendritic tree neuron projection plasma membrane bounded cell projection extracellular region axon 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	IPR045815	Neutrophin-3, N-terminal	Domain
A	IPR002072	Nerve growth factor-related	Domain
A	IPR015578	Neurotrophin-3	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	: P20783	Down syndrome status epilepticus schizophrenia hearing loss disorder Nerve Degeneration diabetic autonomic neuropathy diabetic neuropathy diabetic polyneuropathy epilepsy with generalized tonic-clonic seizures major depressive disorder ovarian cancer sleep-wake disorder bipolar disorder medulloblastoma autism Down syndrome status epilepticus schizophrenia hearing loss disorder Nerve Degeneration diabetic autonomic neuropathy diabetic neuropathy diabetic polyneuropathy epilepsy with generalized tonic-clonic seizures major depressive disorder ovarian cancer sleep-wake disorder bipolar disorder medulloblastoma autism psoriasis breast cancer Sjogren syndrome

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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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.