Recombinant Human FGF-6 (aa 67-208) Protein, CF


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Reactivity HuSpecies Glossary
Applications Bioactivity

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Recombinant Human FGF-6 (aa 67-208) Protein, CF Summary

Details of Functionality
Measured in a cell proliferation assay using NR6R‑3T3 mouse fibroblast cells. Rizzino, A. et al. (1988) Cancer Res. 48:4266; Thomas, K. et al. (1987) Methods Enzymol. 147:120. The ED50 for this effect is 10-80 pg/mL in the presence of 1 µg/mL of heparin.
E. coli-derived human FGF-6 protein
Accession #
N-terminal Sequence
Structure / Form
Protein/Peptide Type
Recombinant Proteins
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Endotoxin Note
<0.01 EU per 1 μg of the protein by the LAL method.


  • Bioactivity
Theoretical MW
16.1 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
15 kDa, reducing condtions

Packaging, Storage & Formulations

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.
Lyophilized from a 0.2 μm filtered solution in MES, Na2S04, NaCl and CHAPS.
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Reconstitution Instructions
Reconstitute at 100 μg/mL in PBS.


This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Human FGF-6 (aa 67-208) Protein, CF

  • FGF6
  • FGF-6
  • fibroblast growth factor 6
  • HBGF-6
  • Heparin secretory-transforming protein 2
  • Heparin-binding growth factor 6
  • HST2
  • HST-2
  • HSTF2
  • HSTF-2


Fibroblast Growth Factor-6 (FGF-6), also known as HST-2, is a 25-28 kDa member of the FGF family of heparin binding polypeptides which are potent regulators of cell proliferation, differentiation, and function. FGF proteins contain a 120 amino acid (aa) core FGF domain that exhibits a beta -trefoil structure (1, 2). Mature human FGF-6 is a 171 aa protein that shares 94% aa sequence identity with mouse and rat FGF-6 (3). It binds and signals primarily through FGF R1c, 2c, and 4 (4). FGF-6 functions as a mitogen for fibroblasts, vascular endothelial cells, and prostate carcinoma cells, and N-linked glycosylation is required for the full mitogenic effect (5‑7). FGF-6 expression is restricted to skeletal muscle during development, although it can be upregulated in prostate cancer and Kaposi sarcoma (7-9). In the adult, FGF-6 is upregulated in injured skeletal muscle and is required for muscle regeneration (10). FGF-6 inhibits the terminal differentiation of myoblasts and also cooperates with TGF-beta 2 to promote chondrogenesis in embryonic somites (8, 11).
  1. Wiedlocha, A. and V. Sorensen (2004) Curr. Top. Microbiol. Immunol. 286:45.
  2. Mohammadi, M. et al. (2005) Cytokine Growth Factor Rev. 16:107.
  3. Marics, I. et al. (1989) Oncogene 4:335.
  4. Ornitz, D.M. et al. (1996) J. Biol. Chem. 271:15292.
  5. Pizette, S. et al. (1991) Cell Growth Differ. 2:561.
  6. Asada, M. et al. (1999) Growth Factors 16:293.
  7. Ropiquet, F. et al. (2000) Cancer Res. 60:4245.
  8. de Lapeyriere, O. et al. (1993) Development 118:601.
  9. Li, J. et al. (1993) Cancer 72:2253.
  10. Floss, T. et al. (1997) Genes Dev. 11:2040.
  11. Grass, S. et al. (1996) Development 122:141.

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Gene Symbol FGF6