Human TrkA Alexa Fluor® 488-conjugated Antibody Summary
Accession # P04629
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Detection of TrkA in HEK293 Cell Line Transfected with Human TrkA by Flow Cytometry. HEK293 human embryonic kidney cell line transfected with human TrkA was stained with Mouse anti-Human TrkA Alexa Fluor® 488-conjugated Monoclonal Antibody (Catalog # FAB1751RG, filled histogram) or isotype control antibody (IC002G, open histogram). To facilitate intracellular staining, cells were fixed with Flow Cytometry Fixation Buffer (FC004) and permeabilized with Flow Cytometry Permeabilization/Wash Buffer I (FC005). Staining was performed using our Staining Intracellular Molecules protocol.
Preparation and Storage
- 12 months from date of receipt, 2 to 8 °C as supplied.
TrkA, the product of the proto-oncogene trk, is a member of the neurotrophic tyrosine kinase receptor family that has three members. TrkA, TrkB, and TrkC preferentially bind NGF, NT-4 and BDNF, and NT-3, respectively. All Trk family proteins share a conserved complex subdomain organization consisting of a signal peptide, two cysteine-rich domains, a cluster of three leucine-rich motifs, and two immunoglobulin-like domains in the extracellular region, as well as an intracellular region that contains the tyrosine kinase domain. Two distinct TrkA isoforms that differ by virtue of a 6-amino acid insertion in their extracellular domain have been identified. The longer TrkA isoform is the only isoform expressed within neuronal tissues whereas the shorter TrkA is expressed mainly in non-neuronal tissues. NGF binds to TrkA with low affinity and activates its cytoplasmic kinase, initiating a signaling cascade that mediates neuronal survival and differentiation. Higher affinity binding of NGF requires the coexpression of TrkA with the p75 NGF receptor (NGF R), a member of the tumor necrosis factor receptor superfamily. NGF R binds all neurotrophins with low affinity and modulates Trk activity as well as alters the specificity of Trk receptors for their ligands. NGF R can also mediate cell death when expressed independent of Trk.
- Esposito, D. et al. (2001) J. Biol. Chem. 276:32687.
- Sofroniew, M.V. et al. (200) Annu. Rev. Neurosci. 24:1217.
Product Specific Notices
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