Recombinant Human BDNF (carrier-free)

Pricing & Availability
Regulatory Status
Other Names
Brain-derived neurotrophic factor, ANON2, BLUN2
Ave. Rating
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Product Citations
Recombinant human BDNF induces proliferation of C6 glioma cells in a dose-dependent manner with an ED50 range of 1 - 3 µg/mL.
  • Human_BDNF_CF_RECOM_1_121919
    Recombinant human BDNF induces proliferation of C6 glioma cells in a dose-dependent manner with an ED50 range of 1 - 3 µg/mL.
  • Human_BDNF_CF_RECOM_2_121919
    When recombinant human BDNF is immobilized at 1 µg/mL, human TrkB-Fc Chimera (Cat. No. 785002) binds in a dose-dependent manner. The EC50 range for this effect is 40 - 160 ng/mL.
  • Human_BDNF_CF_RECOM_3_121919
    Stability testing for recombinant human BDNF. Recombinant human BDNF was aliquoted in 0.1%TFA, < 10% acetonitrile at 0.2 mg/mL. One aliquot was frozen and thawed four times (4x Freeze/Thaw), and compared to a control kept at 4°C (Control). The samples were tested in a TrkB binding assay.
Cat # Size Price Quantity Check Availability Save
788902 10 µg £150
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788904 25 µg £249
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Brain-derived neurotrophic factor (BDNF) is the second member of the NGF family of neurotrophic factors (neurotrophins) that includes nerve growth factor (NGF), neurotrophin-3 (NT-3) and neurotrophin-4/5 (NT-4/5). BDNF shares approximately 55% amino acid identity with other family members. The amino acid sequence of mature BDNF is identical in all mammals examined. All neurotrophins are noncovalently linked homodimers and initially produced as proneurotrophins. These proneurotrophins have distinct biological activity different from their mature counterparts. Mature BDNF promotes the survival and differentiation of selected neuronal populations of the peripheral and central nervous systems during development. BDNF participates in axonal growth, pathfinding and in the modulation of dendritic growth and morphology. BDNF is also a major regulator of synaptic transmission and plasticity at adult synapses in many regions of the CNS. High levels of expression of BDNF have been detected in the hippocampus, cerebellum, fetal eye and placenta. BDNF binds with high affinity and specifically activates the TrkB tyrosine kinase receptor.

Product Details
Technical Data Sheet (pdf)

Product Details

Human BDNF, amino acid His129-Arg247 (Accession # P23560), and Thr at N-terminal was expressed in CHO cells.
Molecular Mass
The 120 amino acid recombinant protein has a predicted molecular mass of approximately 13.6 kD. The DTT-reduced protein migrates at approximately 15 kD and the non-reduced protein migrate at approximately 14 kD by SDS-PAGE. The predicted N-terminal amino acid is Thr.
>95%, as determined by Coomassie stained SDS-PAGE.
0.22 µm filtered protein solution is in 0.1% TFA, 10% acetonitrile.
Endotoxin Level
Less than 0.1 EU per µg protein as determined by the LAL method
10 and 25 µg sizes are bottled at 200 µg/mL. 100 µg and larger sizes are lot-specific and bottled at the concentration indicated on the vial. To obtain lot-specific concentration, please enter the lot number in our Concentration and Expiration Lookup or Certificate of Analysis online tools.
Storage & Handling
Unopened vial can be stored between 2°C and 8°C for up to 2 weeks, at -20°C for up to six months, or at -70°C or colder until the expiration date. For maximum results, quick spin vial prior to opening. The protein can be aliquoted and stored at -20°C or colder. Stock solutions can also be prepared at 50 - 100 µg/mL in appropriate sterile buffer, carrier protein such as 0.2 - 1% BSA or HSA can be added when preparing the stock solution. Aliquots can be stored between 2°C and 8°C for up to one week and stored at -20°C or colder for up to 3 months. Avoid repeated freeze/thaw cycles.
The ED50 = 1 - 3 µg/mL as measured by the ability of the protein to induce the proliferation of induce the proliferation of C6 glioma cells.
When human BDNF is immobilized at 1 µg/mL, human TrkB-Fc Chimera (Cat. No. 785002) binds in a dose-dependent manner. The EC50 range for this effect is 40 - 160 ng/mL.


Application Notes

BioLegend carrier-free recombinant proteins provided in liquid format are shipped on blue ice. Our comparison testing data indicates that when handled and stored as recommended, the liquid format has equal or better stability and shelf-life compared to commercially available lyophilized proteins after reconstitution. Our liquid proteins are verified in-house to maintain activity after shipping on blue ice and are backed by our 100% satisfaction guarantee. If you have any concerns, contact us at

Product Citations
  1. Kawata M, et al. 2022. PLoS One. 17:e0276694. PubMed

Antigen Details

Non-covalently linked homodimer

Ubiquitous with high levels in peripheral tissues including prostate, placenta, pancreas, heart, kidney, pituitary gland, lung and testis.

Supports the survival of sensory and sympathetic neurons, and also dopaminergic midbrain neurons.
Sensory neurons, sympathetic neurons, midbrain dopaminergic neurons.
Measured by its ability to induce proliferation of C6 glioma cells
Cell Type
Neural Stem Cells, Neurons
Biology Area
Neurodegeneration, Neuroscience, Stem Cells, Synaptic Biology
Molecular Family
Growth Factors
Antigen References
  1. Baloh RH, et al. 1998. Neuron. 21:1291-302.
  2. Masure S, et al. 1999. Eur J Biochem. 266:892-902.
  3. Gardell LR, et al. 2003. Nature Med. 9:1383-9.
  4. Honma Y, et al. 2002. Neuron. 35:267-82.
  5. Banerjee A, et al. 2012. PLoS One. 7(11):e50098.
  6. Wong LE, et al. 2015. Proc Natl Acad Sci USA. 112:6170-5.
  7. Zhang M, et al. 2016. Oncotarget. 7:3267-82.
Gene ID
627 View all products for this Gene ID
View information about BDNF on

Related FAQs

Why choose BioLegend recombinant proteins?

     • Each lot of product is quality-tested for bioactivity as indicated on the data sheet.
     • Greater than 95% Purity or higher, tested on every lot of product.
     • 100% Satisfaction Guarantee for quality performance, stability, and consistency.
     • Ready-to-use liquid format saves time and reduces challenges associated with reconstitution.
     • Bulk and customization available. Contact us.
     • Learn more about our Recombinant Proteins.

How does the activity of your recombinant proteins compare to competitors?

We quality control each and every lot of recombinant protein. Not only do we check its bioactivity, but we also compare it against other commercially available recombinant proteins. We make sure each recombinant protein’s activity is at least as good as or better than the competition’s. In order to provide you with the best possible product, we ensure that our testing process is rigorous and thorough. If you’re curious and eager to make the switch to BioLegend recombinants, contact your sales representative today!

What is the specific activity or ED50 of my recombinant protein?

The specific activity range of the protein is indicated on the product datasheets. Because the exact activity values on a per unit basis can largely fluctuate depending on a number of factors, including the nature of the assay, cell density, age of cells/passage number, culture media used, and end user technique, the specific activity is best defined as a range and we guarantee the specific activity of all our lots will be within the range indicated on the datasheet. Please note this only applies to recombinants labeled for use in bioassays. ELISA standard recombinant proteins are not recommended for bioassay usage as they are not tested for these applications.

Have your recombinants been tested for stability?

Our testing shows that the recombinant proteins are able to withstand room temperature for a week without losing activity. In addition the recombinant proteins were also found to withstand four cycles of freeze and thaw without losing activity.

Does specific activity of a recombinant protein vary between lots?

Specific activity will vary for each lot and for the type of experiment that is done to validate it, but all passed lots will have activity within the established ED50 range for the product and we guarantee that our products will have lot-to-lot consistency. Please conduct an experiment-specific validation to find the optimal ED50 for your system.

How do you convert activity as an ED50 in ng/ml to a specific activity in Units/mg?
Use formula Specific activity (Units/mg) = 10e6/ ED50 (ng/mL)
Go To Top Version: 2    Revision Date: 12/12/2022

For research use only. Not for diagnostic use. Not for resale. BioLegend will not be held responsible for patent infringement or other violations that may occur with the use of our products.


*These products may be covered by one or more Limited Use Label Licenses (see the BioLegend Catalog or our website, BioLegend products may not be transferred to third parties, resold, modified for resale, or used to manufacture commercial products, reverse engineer functionally similar materials, or to provide a service to third parties without written approval of BioLegend. By use of these products you accept the terms and conditions of all applicable Limited Use Label Licenses. Unless otherwise indicated, these products are for research use only and are not intended for human or animal diagnostic, therapeutic or commercial use.


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