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To Purchase # 5237SC

5237SC 10 µg (With Carrier) $204.00.0
5237SF 10 µg (Carrier Free) $204.00.0


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Source / Purification

Recombinant human Neurotrophin-3 (hNT-3) Tyr139-Thr257 (Accession #NP_002518) was produced in E.coli at Cell Signaling Technology.

Product Description


>98% as determined by SDS-PAGE of 6 μg reduced (+) and non-reduced (-) recombinant hNT-3. All lots are greater than 98% pure.

Molecular Formula:

Recombinant hNT-3 does not have a Met on the amino terminus and has a calculated MW of 13,625. DTT-reduced and non-reduced protein migrate as 14 kDa polypeptides. The expected amino-terminal YAEHK of recombinant hNT-3 was verified by amino acid sequencing.


The bioactivity of recombinant hNT-3 was determined in a TrkC-transfected NIH/3T3 cell proliferation assay. The ED50 of each lot is between 0.5 - 5 ng/ml.


Less than 0.01 ng endotoxin/1 μg hNT-3.

Product Usage Information


With carrier: Lyophilized from a 0.22 μm filtered solution of 20 mM phosphate, pH 8.0 containing 500 mM NaCl and 20 μg BSA per 1 μg hNT-3. Carrier free: Lyophilized from a 0.22 μm filtered solution of 20 mM phosphate, pH 8.0 containing 500 mM NaCl.

Storage: Stable in lyophilized state at 4°C for 1 year after receipt. Sterile stock solutions reconstituted with carrier protein are stable at 4°C for 2 months and at -20°C for 6 months. Avoid repeated freeze-thaw cycles.Maintain sterility. Storage at -20°C should be in a manual defrost freezer.

NT-3 is a member of the structurally related neurotrophin family of proteins, which includes β-NGF, BDNF and NT-4 (1). NT-3 is expressed in a number of cell types including neuronal cells, eosinophils, and melanocytes (1-3). NT-3 is required for the development of peripheral sensory neurons (4). NT-3 is secreted from cells as a precursor protein, which is proteolytically cleaved into the mature form (1). NT-3 signaling is mediated through two distinct receptors, the neurotrophin receptor p75NTR and the Trk tyrosine kinase receptor TrkC. While all neurotrophins bind to the p75NTR receptor, NT-3 preferentially binds to TrkC and, with lesser affinity, TrkB (1).

1.  Huang, E.J. and Reichardt, L.F. (2001) Annu Rev Neurosci 24, 677-736.

2.  Noga, O. et al. (2003) Clin Exp Allergy 33, 649-54.

3.  Truzzi, F. et al. (2008) J Invest Dermatol 128, 2031-40.

4.  Tessarollo, L. et al. (1994) Proc Natl Acad Sci U S A 91, 11844-8.

Entrez-Gene Id 4908
Swiss-Prot Acc. P20783

For Research Use Only. Not For Use In Diagnostic Procedures.
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Human Neurotrophin-3 (hNT-3)