Summary

Name NTRK2
Full Name BDNF/NT-3 growth factors receptor
Synonyms GP145-TrkB, Trk-B, Neurotrophic tyrosine kinase receptor type 2, TrkB tyrosine kinase, Tropomyosin-related kinase B | TRKB
Primary ID Q16620
Links - -
Type protein
Relations 26
Pathways Rett syndrome
Inhibitors LSM-1231
Function Receptor tyrosine kinase involved in the development and the maturation of the central and the peripheral nervous systems through regulation of neuron survival, proliferation, migration, differentiation, and synapse formation and plasticity (By similarity). Receptor for BDNF/brain-derived neurotrophic factor and NTF4/neurotrophin-4. Alternatively can also bind NTF3/neurotrophin-3 which is less efficient in activating the receptor but regulates neuron survival through NTRK2 (PubMed:7574684, PubMed:15494731). Upon ligand-binding, undergoes homodimerization, autophosphorylation and activation (PubMed:15494731). Recruits, phosphorylates and/or activates several downstream effectors including SHC1, FRS2, SH2B1, SH2B2 and PLCG1 that regulate distinct overlapping signaling cascades. Through SHC1, FRS2, SH2B1, SH2B2 activates the GRB2-Ras-MAPK cascade that regulates for instance neuronal differentiation including neurite outgrowth. Through the same effectors controls the Ras-PI3 kinase-AKT1 signaling cascade that mainly regulates growth and survival. Through PLCG1 and the downstream protein kinase C-regulated pathways controls synaptic plasticity. Thereby, plays a role in learning and memory by regulating both short term synaptic function and long-term potentiation. PLCG1 also leads to NF-Kappa-B activation and the transcription of genes involved in cell survival. Hence, it is able to suppress anoikis, the apoptosis resulting from loss of cell-matrix interactions. May also play a role in neutrophin-dependent calcium signaling in glial cells and mediate communication between neurons and glia.

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Modifications Tables

Relations

Regulator Mechanism target score
+ down-regulates img/direct_inhibition.png phosphorylation KCNA3 0.392
Publications: 3 Organism: Homo Sapiens
Tissue: Kidney
+ up-regulates activity img/direct-activation.png phosphorylation SHC3 (isoform 2) 0.741
Publications: 4 Organism: In Vitro
+ up-regulates activity img/direct-activation.png phosphorylation FRS3 0.577
Publications: 2 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png phosphorylation NTRK2 0.2
Publications: 3 Organism: Mus Musculus
Pathways:Rett syndrome
+ img/unknown.png phosphorylation NTRK2 0.2
Publications: 2 Organism: Mus Musculus
Pathways:Rett syndrome
+ down-regulates activity img/direct_inhibition.png dephosphorylation NTRK2 0.388
Publications: 2 Organism: Homo Sapiens
Pathways:Rett syndrome
+ up-regulates img/direct-activation.png binding FYN 0.39
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png binding NCK2 0.341
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png chemical inhibition NTRK2 0.8
Publications: 2 Organism: In Vitro
+ up-regulates img/direct-activation.png binding NTRK2 0.938
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity by expression img/direct-activation.png transcriptional regulation NTRK2 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png binding SHC3 0.741
Publications: 1 Organism: Homo Sapiens
Tissue: Brain
Pathways:Rett syndrome
+ up-regulates img/direct-activation.png binding NTRK2 0.812
Publications: 1 Organism: Homo Sapiens
Pathways:Rett syndrome
+ up-regulates quantity by expression img/direct-activation.png transcriptional regulation NTRK2 0.2
Publications: 1 Organism: Mus Musculus
Tissue: Brain
+ up-regulates quantity by expression img/direct-activation.png transcriptional regulation NTRK2 0.271
Publications: 1