Recombinant Human FGF acidic/FGF1 (aa 16-155) Protein, CF


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Applications Bioactivity

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Recombinant Human FGF acidic/FGF1 (aa 16-155) 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 0.015-0.15 ng/mL in the presence of 10 µg/mL of heparin.
E. coli-derived human FGF acidic/FGF1 protein
Phe16-Asp155, with an N-terminal Met
Accession #
N-terminal Sequence
Protein/Peptide Type
Recombinant Proteins
>97%, 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
15.5 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.
Read Publications using
232-FA/CF in the following applications:

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 °C under sterile conditions after reconstitution.
Lyophilized from a 0.2 μm filtered solution in MOPS, Na2SO4 and EDTA.
>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Reconstitution Instructions
Reconstitute at 100 μg/mL in sterile PBS.


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

Alternate Names for Recombinant Human FGF acidic/FGF1 (aa 16-155) Protein, CF

  • AFGF
  • alpha
  • alpha-ECGF
  • beta-ECGF
  • ECGF
  • ECGF-betaAcidic fibroblast growth factor
  • endothelial cell growth factor, beta
  • FGF acidic
  • FGF-1
  • FGFABeta-endothelial cell growth factor
  • FGF-alpha
  • fibroblast growth factor 1 (acidic)
  • GLIO703
  • HBGF1
  • HBGF-1
  • heparin-binding growth factor 1


FGF acidic, also known as FGF1, ECGF, and HBGF-1, is a 17 kDa nonglycosylated member of the FGF family of mitogenic peptides. FGF acidic, which is produced by multiple cell types, stimulates the proliferation of all cells of mesodermal origin and many cells of neuroectodermal, ectodermal, and endodermal origin. It plays a number of roles in development, regeneration, and angiogenesis (1-3). Human FGF acidic shares 54% amino acid sequence identity with FGF basic and 17%‑33% with other human FGFs. It shares 92%, 96%, 96%, and 96% aa sequence identity with bovine, mouse, porcine, and rat FGF acidic, respectively, and exhibits considerable species crossreactivity. Alternate splicing generates a truncated isoform of human FGF acidic that consists of the N-terminal 40% of the molecule and functions as a receptor antagonist (4). During its nonclassical secretion, FGF acidic associates with S100A13, copper ions, and the C2A domain of synaptotagmin 1 (5). It is released extracellularly as a disulfide-linked homodimer and is stored in complex with extracellular heparan sulfate (6). The ability of heparan sulfate to bind FGF acidic is determined by its pattern of sulfation, and alterations in this pattern during embryogenesis thereby regulate FGF acidic bioactivity (7). The association of FGF acidic with heparan sulfate is a prerequisite for its subsequent interaction with FGF receptors (8, 9). Ligation triggers receptor dimerization, transphosphorylation, and internalization of receptor/FGF complexes (10). Internalized FGF acidic can translocate to the cytosol with the assistance of Hsp90 and then migrate to the nucleus by means of its two nuclear localization signals (11-13). The phosphorylation of FGF acidic by nuclear PKC delta triggers its active export to the cytosol where it is dephosphorylated and degraded (14, 15). Intracellular FGF acidic functions as a survival factor by inhibiting p53 activity and proapoptotic signaling (16).

  1. Jaye, M. et al. (1986) Science 233:541.
  2. Galzie, Z. et al. (1997) Biochem. Cell Biol. 75:669.
  3. Presta, M. et al. (2005) Cytokine Growth Factor Rev. 16:159.
  4. Yu, Y.L. et al. (1992) J. Exp. Med. 175:1073.
  5. Rajalingam, D. et al. (2007) Biochemistry 46:9225.
  6. Guerrini, M. et al. (2007) Curr. Pharm. Des. 13:2045.
  7. Allen, B.L. and A.C. Rapraeger (2003) J. Cell Biol. 163:637.
  8. Robinson, C.J. et al. (2005) J. Biol. Chem. 280:42274.
  9. Mohammadi, M. et al. (2005) Cytokine Growth Factor Rev. 16:107.
  10. Wiedlocha, A. and V. Sorensen (2004) Curr. Top. Microbiol. Immunol. 286:45.
  11. Wesche, J. et al. (2006) J. Biol. Chem. 281:11405.
  12. Imamura, T. et al. (1990) Science 249:1567.
  13. Wesche, J. et al. (2005) Biochemistry 44:6071.
  14. Wiedlocha, A. et al. (2005) Mol. Biol. Cell 16:794.
  15. Nilsen, T. et al. (2007) J. Biol. Chem. 282:26245.
  16. Bouleau, S. et al. (2005) Oncogene 24:7839.

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Publications for FGF acidic/FGF1 (232-FA/CF)(20)

We have publications tested in 3 confirmed species: Human, Mouse, Canine.

We have publications tested in 3 applications: Bioassay, Cell Culture, In Vivo.

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Showing Publications 1 - 10 of 20. Show All 20 Publications.
Publications using 232-FA/CF Applications Species
Y Shinmyo, K Saito, T Hamabe-Hor, N Kameya, A Ando, K Kawasaki, TAD Duong, M Sakashita, J Roboon, T Hattori, T Kannon, K Hosomichi, M Slezak, MG Holt, A Tajima, O Hori, H Kawasaki Localized astrogenesis regulates gyrification of the cerebral cortex Science Advances, 2022-03-11;8(10):eabi5209. 2022-03-11 [PMID: 35275722] (Bioassay, Mouse) Bioassay Mouse
HW Huang, CM Yang, CH Yang Fibroblast Growth Factor Type 1 Ameliorates High-Glucose-Induced Oxidative Stress and Neuroinflammation in Retinal Pigment Epithelial Cells and a Streptozotocin-Induced Diabetic Rat Model International Journal of Molecular Sciences, 2021-07-05;22(13):. 2021-07-05 [PMID: 34281287] (Bioassay, Human) Bioassay Human
Y Toba, A Kiso, S Nakamae, F Sakurai, K Takayama, H Mizuguchi FGF signal is not required for hepatoblast differentiation of human iPS cells Sci Rep, 2019-03-06;9(1):3713. 2019-03-06 [PMID: 30842525] (Bioassay, Human) Bioassay Human
A Taguchi, R Nishinakam Higher-Order Kidney Organogenesis from Pluripotent Stem Cells Cell Stem Cell, 2017-11-09;0(0):. 2017-11-09 [PMID: 29129523] (Bioassay, Human) Bioassay Human
Ilkow C, Marguerie M, Batenchuk C, Mayer J, Ben Neriah D, Cousineau S, Falls T, Jennings V, Boileau M, Bellamy D, Bastin D, de Souza C, Alkayyal A, Zhang J, Le Boeuf F, Arulanandam R, Stubbert L, Sampath P, Thorne S, Paramanthan P, Chatterjee A, Strieter R, Burdick M, Addison C, Stojdl D, Atkins H, Auer R, Diallo J, Lichty B, Bell J Reciprocal cellular cross-talk within the tumor microenvironment promotes oncolytic virus activity. Nat Med, 2015-04-20;21(5):530-6. 2015-04-20 [PMID: 25894825] (Bioassay, Human) Bioassay Human
Tucker , Budd A, Mullins , Robert F, Streb , Luan M, Anfinson , Kristin, Eyestone , Mari E, Kaalberg , Emily, Riker , Megan J, Drack , Arlene V, Braun , Terry A, Stone , Edwin M Patient-specific iPSC-derived photoreceptor precursor cells as a means to investigate retinitis pigmentosa. Elife, 2013-08-27;2(0):e00824. 2013-08-27 [PMID: 23991284] (Bioassay, Human) Bioassay Human
Tucker B, Anfinson K, Mullins R, Stone E, Young M Use of a synthetic xeno-free culture substrate for induced pluripotent stem cell induction and retinal differentiation. Stem Cells Transl Med, 2012-12-27;2(1):16-24. 2012-12-27 [PMID: 23283489] (Bioassay, Human) Bioassay Human
Luo X, Hutley LJ, Webster JA, Kim YH, Liu DF, Newell FS, Widberg CH, Bachmann A, Turner N, Schmitz-Peiffer C, Prins JB, Yang GS, Whitehead JP Identification of BMP and activin membrane-bound inhibitor (BAMBI) as a potent negative regulator of adipogenesis and modulator of autocrine/paracrine adipogenic factors. Diabetes, 2012-01-01;61(1):124-36. 2012-01-01 [PMID: 22187378] (Bioassay, Human) Bioassay Human
Roelandt P, Pauwelyn KA, Sancho-Bru P Human embryonic and rat adult stem cells with primitive endoderm-like phenotype can be fated to definitive endoderm, and finally hepatocyte-like cells. PLoS ONE, 2010-08-11;5(8):e12101. 2010-08-11 [PMID: 20711405] (Cell Culture, Human) Cell Culture Human
Darby S, Murphy T, Thomas H, Robson CN, Leung HY, Mathers ME, Gnanapragasam VJ Similar expression to FGF (Sef) inhibits fibroblast growth factor-induced tumourigenic behaviour in prostate cancer cells and is downregulated in aggressive clinical disease. Br. J. Cancer, 2009-11-03;101(11):1891-9. 2009-11-03 [PMID: 19888221] (Bioassay, Human) Bioassay Human
Show All 20 Publications.

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Gene Symbol FGF1