TrkA (tropomyosin receptor kinase A) encodes a member of the neurotrophic tyrosine kinase receptor (NTKR) family. TrkA is a membrane-bound receptor that, upon neurotrophin binding, phosphorylates itself and members of the MAPK pathway. The presence of TrkA leads to cell differentiation and may play a role in specifying sensory neuron subtypes. Mutations in TrkA have been associated with congenital insensitivity to pain, anhidrosis, self-mutilating behavior, mental retardation and cancer. Alternate transcriptional splice variants of this gene have been found, but only three have been characterized to date. Mutations in the TRKA gene have been associated with congenital insensitivity to pain, anhidrosis, self-mutilating behavior, mental retardation and cancer.
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Protein Aliases: DKFZp781I14186; EC 188.8.131.52; gp140trk; High affinity nerve growth factor receptor; kinase TrkA; Neurotrophic tyrosine kinase receptor type 1; neurotrophic tyrosine kinase, receptor, type 1; Oncogene TRK; p140-TrkA; Slow nerve growth factor receptor; trk; Trk-A; TRK1-transforming tyrosine kinase protein; TrkA neurotrophin receptor; trkA proto-oncogene receptor; Tropomyosin-related kinase A; Tyrosine kinase receptor; Tyrosine kinase receptor A
Gene Aliases: C80751; MTC; NTRK1; p140-TrkA; Tkr; TRK; Trk-A; TRK1; TRKA
Molecular Function: transmembrane signal receptor