FGF-2 (FGF-basic) Bovine, E. coli Recombinant Protein (155 aa)

FGF-2 (FGF-basic) Bovine, E. coli Recombinant Protein (155 aa)

Regular price
Sale price
Regular price
Unit price
Shipping calculated at checkout.


Our bioactive FGF-2 (FGF-basic) Bovine, E. coli Recombinant Protein (155 aa), also known as Fibroblast Growth Factor 2, is a single, non-glycosylated, polypeptide chain that contains 155 amino acids and has a 17250 Dalton molecular mass. The FGF-2 is purified by proprietary chromatographic techniques.


FGF-basic, a member of the fibroblast growth factor (FGF) family, is a non-glycosylated, heparin-binding growth factor and signaling protein encoded by the FGF2 gene. It binds to and exerts effects via specific fibroblast growth factor receptor (FGFR) proteins. Like other FGF family members, FGF-basic possesses broad mitogenic and cell survival activities, and is involved in a variety of biological processes, including embryonic development, cell growth, morphogenesis, tissue repair, tumor growth and invasion.

Additionally, FGF-basic is a critical component of human embryonic stem cell (hESCs) culture medium; the growth factor is necessary for the cells to remain in an undifferentiated state. As a result, FGF-basic has been used to develop chemically-defined, serum-free and feeder-free hESCs culture mediums.

Other Names

Bovine Fibroblast Growth Factor-2, Cow FGF2, FGF-2, FGF basic, FGF-b, Basic fibroblast growth factor, bFGF, Heparin-binding growth factor 2, HBGF-2.

Amino Acid Sequence

The sequence of the first five N-terminal amino acids was determined and was found to be Met-Ala-Ala-Gly-Ser.


E. coli


Sterile filtered white lyophilized (freeze-dried) powder. The protein was lyophilized from a concentrated (1 mg/ml) sterile solution containing 1% HSA.


Purity greater than 97.0% as determined by:

  1. Analysis by RP-HPLC.
  2. Analysis by SDS-PAGE.

Biological Activity

The ED50, measured in a mitogenic assay using quiescent NR6R-3T3 fibroblasts was found to be <0.1 ng/ml, corresponding to a specific activity of 3 x 106 Units/mg.

Protein Content

Protein quantitation was carried out by two independent methods:

  1. UV spectroscopy at 280 nm using the absorbency value of 0.85 as the extinction coefficient for a 0.1% (1 mg/ml) solution. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics).
  2. Analysis by RP-HPLC, using a calibrated solution of FGF-2 Bovine as a Reference Standard.


It is recommended to reconstitute the lyophilized FGF-basic in sterile 18MΩ-cm H2O not less than 100 µg/ml, which can then be further diluted to other aqueous solutions.


At ambient temperature. Upon receipt, store the product at the temperature recommended below.


Lyophilized FGF-basic, although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution, FGF-basic should be stored at 4°C between 2-7 days and for future use below -18°C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles.


This product is intended for Laboratory Research Use Only. Not for use in diagnostic or therapeutic procedures. This product may not be used as a pharmaceutical or veterinary drug, agricultural product, or food additive.


Want to learn more about FGF-basic? We have compiled the links below which contain information that you may find interesting.

Related Products