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Eur J Hum Genet. 1997 Mar-Apr;5(2):102-4.

Mapping of the tyrosine kinase receptors trkA (NTRK1), trkB (NTRK2) and trkC(NTRK3) to human chromosomes 1q22, 9q22 and 15q25 by fluorescence in situ hybridization.

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Institut Gustave-Roussy, Villejuif, France.


trk (NTRK) genes encode tyrosine kinase transmembrane receptors that are stimulated by neurotrophins, and are responsible for the transduction of signals controlling neuropoiesis and neuron survival in the central and peripheral nervous system, trkA gene has earlier been assigned to three different loci on chromosome 1. To resolve these conflicting results, and confirm the localization of trkB and trkC, probes specific to each of these related genes were constructed and used in fluorescent in situ hybridization on human metaphase cells. Our results indicate that trkA, trkB and trkC are located in chromosome bands 1q22, 9q22 and 15q25, respectively.

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