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Recombinant Human FGF-BP Protein, CF

Catalog # 1593-FB | R&D Systems, Inc. a Bio-Techne Brand
Catalog #
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Key Product Details

Accession #






Binding Activity

Product Specifications


Mouse myeloma cell line, NS0-derived human FGF-BP protein
Lys24-Cys234 & Asn29-Cys234 both with a C-terminal 10-His tag


>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.

Endotoxin Level

<1.0 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Lys24 & Asn29

Predicted Molecular Mass

25.2 kDa & 24.6 kDa


31-35 kDa, reducing conditions


Measured by its binding ability in a functional ELISA.

1 μg/mL of rhFGF-BP was mixed with serially diluted rhFGF basic (Catalog # 233-FB). Following incubation, the FGFBP-FGF basic complex was captured on a Gt x hFGFBP-coated plate. Bound FGF basic was measured using biotinylated Gt x hFGF basic. The concentration of rhFGF basic that produces 50% of the optimal binding was found to be approximately 5-20 ng/mL.

Formulation, Preparation and Storage

Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage 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.

Background: FGF-BP

Fibroblast growth factor binding protein (FGF-BP), also known as HBp17, is a secreted glycoprotein that increases the bioavailability of FGFs (1). Mature FGF-BP is a 34 kDa, 211 amino acid (aa) O-glycosylated protein with five conserved intrachain disulfide bonds (2 - 4). FGF-BP contains a heparin-binding domain (aa 110 - 143) and a distinct FGF-binding region (aa 193 - 243) (5). Mature human FGF-BP shares 59% and 54% aa sequence identity with mouse and rat FGF-BP, respectively. FGF-BP is expressed throughout development and in adult squamous epithelium (2, 6). It is upregulated in injured skin, renal tubular epithelium, and spinal nerves as well as in carcinomas of the skin, colon, and pancreas (3, 7 - 10). FGF-BP binds FGF-1, -2, -7, -10, and -22 which are secreted and sequestered in the extracellular matrix (ECM) (7, 11). The association of FGF-BP with heparan sulfate proteoglycans (HSPG) weakens HSPG attachment of FGFs and promotes their release (2, 8, 12, 13). FGF-BP enhances the mitogenic effects of FGFs, thereby contributing to epithelial, endothelial, and neuronal tissue repair, angiogenesis, and tumor growth (7 - 9, 11, 14, 15).


  1. Abuharbeid, S. et al. (2006) Int. J. Biochem. Cell Biol. 38:1463.
  2. Wu, D. et al. (1991) J. Biol. Chem. 266:16778.
  3. Tassi, E. et al. (2006) Cancer Res. 66:1191.
  4. Lametsch, R. et al. (2000) J. Biol. Chem. 275:19469.
  5. Xie, B. et al. (2006) J. Biol. Chem. 281:1137.
  6. Aigner, A. et al. (2002) Histochem. Cell Biol. 117:1.
  7. Beer, H.-D. et al. (2005) Oncogene 24:5269.
  8. Ray, P.E. et al. (2006) Am. J. Physiol. Regul. Integr. Comp. Physiol. 290:R105.
  9. Tassi, E. et al. (2007) Am. J. Physiol. Regul. Integr. Comp. Physiol. 293:R775.
  10. Kurtz, A. et al. (2004) Neoplasia 6:595.
  11. Tassi, E. et al. (2001) J. Biol. Chem. 276:40247.
  12. Mongiat, M. et al. (2001) J. Biol. Chem. 276:10263.
  13. Kurtz, A. et al. (1997) Oncogene 14:2671.
  14. Aigner, A. et al. (2001) Int. J. Cancer 92:510.
  15. Czubayko, F. et al. (1997) Nat. Med. 3:1137.

Long Name

Fibroblast Growth Factor Binding Protein

Alternate Names


Entrez Gene IDs

9982 (Human); 14181 (Mouse); 64535 (Rat)

Gene Symbol



Product Documents for Recombinant Human FGF-BP Protein, CF

Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Recombinant Human FGF-BP Protein, CF

For research use only

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