TrkA: a receptor tyrosine kinase of the Trk family. High affinity receptor for nerve growth factor, neurotrophin-3 and neurotrophin-4/5 but not brain- derived neurotrophic factor. Known substrates include Shc, PI-3K, and PLC-gamma-1. Has a crucial role in the development and function of the nociceptive reception system. Two splice variant isoforms have been described.
Protein type: Protein kinase, TK; Membrane protein, integral; Oncoprotein; Protein kinase, tyrosine (receptor); Kinase, protein; EC 2.7.10.1; TK group; Trk family
Cellular Component: protein complex; cell surface; integral to plasma membrane; early endosome; dendrite; integral to membrane; cell soma; membrane; axon; cytoplasm; late endosome; plasma membrane; cytoplasmic vesicle; receptor complex; endosome
Molecular Function: protein homodimerization activity; ephrin receptor binding; nucleotide binding; transmembrane receptor protein tyrosine kinase activity; neurotrophin receptor activity; protein kinase activity; neurotrophin p75 receptor binding; transferase activity; protein binding; nerve growth factor receptor activity; protein-tyrosine kinase activity; transferase activity, transferring phosphorus-containing groups; nerve growth factor binding; kinase activity; kinase binding; ATP binding
Biological Process: response to nicotine; axon guidance; mechanoreceptor differentiation; peptidyl-tyrosine phosphorylation; nerve growth factor receptor signaling pathway; multicellular organismal development; protein amino acid autophosphorylation; sensory perception of pain; positive regulation of synaptic transmission, glutamatergic; protein amino acid phosphorylation; activation of NF-kappaB transcription factor; sympathetic nervous system development; learning and/or memory; negative regulation of neuron apoptosis; detection of temperature stimulus involved in sensory perception of pain; response to electrical stimulus; cell differentiation; response to nutrient levels; response to drug; nervous system development; Sertoli cell development; detection of mechanical stimulus involved in sensory perception of pain; positive regulation of angiogenesis; positive regulation of programmed cell death; B cell differentiation; response to activity; phosphorylation; transmembrane receptor protein tyrosine kinase signaling pathway
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