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Recombinant Rat TrkA Fc Chimera Protein, CF

Catalog # 1056-TK | R&D Systems, Inc. a Bio-Techne Brand
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1056-TK-050

Key Product Details

Source

NS0

Accession #

Structure / Form

Disulfide-linked homodimer

Conjugate

Unconjugated

Applications

Bioactivity

Product Specifications

Source

Mouse myeloma cell line, NS0-derived rat TrkA protein
Rat TrkA
(Ala33 - Pro418) &
(Ala34 - Pro418)
Accession # P35739
IEGRMD Human IgG1
(Pro100 - Lys330)
N-terminus C-terminus

Purity

>90%, by SDS-PAGE under reducing conditions and visualized by silver stain.

Endotoxin Level

<0.10 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Ala33 & Ala34

Predicted Molecular Mass

69 kDa (monomer)

SDS-PAGE

120-130 kDa, reducing conditions

Activity

Measured by its ability to inhibit NGF-induced proliferation of TF‑1 human erythroleukemic cells.
The ED50 for this effect is 10-40 ng/mL in the presence of 10 ng/mL of rrNGF.

Formulation, Preparation and Storage

1056-TK
Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution
Reconstitute at 100 μg/mL in sterile PBS.

Reconstitution Buffer Available:
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Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: TrkA

Trk A, the product of the proto-oncogene trk, is a member of the neurotrophic tyrosine kinase receptor family that has three members. Trk A, Trk B and Trk C 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 rat Trk A isoforms (TrkA-I and Trk-A-II) that differ by a 6-amino acid insertion in their extracellular domain have been identified. The longer Trk A isoform is the only isoform expressed within neuronal tissues whereas the shorter Trk A-I is expressed mainly in non-neuronal tissues. NGF binds to Trk A 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 Trk A 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.

References

  1. Esposito, D. et al. (2001) J. Biol. Chem. 276:32687.
  2. Sofroniew, M.V. et al. (2001) Annu. Rev. Neurosci. 24:1217.

Long Name

Neurotrophic Tyrosine Kinase Receptor A

Alternate Names

NTRK-1, NTRK1

Entrez Gene IDs

4914 (Human); 18211 (Mouse); 59109 (Rat); 102129364 (Cynomolgus Monkey)

Gene Symbol

NTRK1

UniProt

Product Documents for Recombinant Rat TrkA Fc Chimera Protein, CF

Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Recombinant Rat TrkA Fc Chimera Protein, CF

For research use only

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