rev:    October 19, 2004

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Human Cytokine/Growth Factor/Chemokines Sample Spec sheets (subject to change without notice):


DATA SHEET:    recombinant Human Fibroblast Growth Factor-4

-Fibroblast Growth Factor-4 (FGF-4) , is a heparin binding growth factor that stimulates the proliferation and activation of cells that express FGF receptors. This recombinant human FGF-4 is a 19.0 kDa protein containing 182 amino acid residues.

Catalog#: RDI-1031

Package Size: 25 micrograms $231.00     $219.00/pack 2 or more

                      MINI-PACK cat#RDI-1031p $94.00/5ug

                 -inquire for custom sizes/bulk packaging

Supplied: sterile filtered and the the protein was lyophilized from 10mM Tris pH7.4 & 100mM NaCl( no additives)

Source: E. Coli

Purity: >95% by SDS-Page and HPLC analyses. Endotoxin level is less than 0.1ng per ug of FGF-4.

Reconstitution: The lyophilized FGF-4 should be reconstituted in water to a concentration of 0.1-1mg/ml). Allow to set at least 30 minutes at 4 DEG C, tighten cap and rotate to reconstitute any material on sides of vial. If desired, you can centrifuge at 1000 rpm for 1 minute to concentrate volume in bottom of vial. This solution can be diluted into water or other buffered solutions or stored at 4 DEG C for up to 1 week or at - 20 DEG C for future use. For most in-vitro applications, human FGF-4 exerts its biological activity in the concentration range of 0.1 to 20.0 ng/ml.

Note:If this material is not to be used for coating or labeling(or other applications requiring carrier free material), the addition of 0.1% BSA to dilution buffers or dilution in sterile culture media is recommended to enhance stability and minimize absorption to vial. Ideally, maintain concentration >10ug/ml.

Storage: The lyophilized powder is stable at room temperature for a few weeks but it is best stored desiccated at -20 Deg C. Reconstituted human FGF-4 should be stored in working aliquots at -20 DEG C. AVOID FREQUENT FREEZE THAW CYCLES. EACh FREEZE THAW CYCLE WILL DIMINISH ACTIVITY.

Reactivity: The biological activity was determined by the does- dependent stimulation of thymidine uptake by BaF3 cells expressing FGF receptors yielding an ED50 <0.5ng/ml, corresponding to a specific activity of >1 X 10 E06 (1 million) units/mg.

AA Sequence:

MGRGGAAAPT APNGTLEAEL ERRWESLVAL SLARLPVAAQ PKEAAVQSGA

GDYLLGIKRL RRLYCNVGIG FHLQALPDGR IGGAHADTRD SLLELSPVER

GVVSIFGVAS RFFVAMSSKG KLYGSPFFTD ECTFKEILLP NNYNAYESYK

YPGMFIALSK NGKTKKGNRV SPTMKVTHFL PRL

For In vitro research Use Only. Not for use in or on humans or animals or for diagnostics.  It is the responsibility of the user to comply with all local/state and Federal rules in the use of this product. We are not responsible for any patent infringements that might result with the use of or derivation of this product.


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phone (978) 371-6446 or (800) 370-2222

fax     (978) 371-2266

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