Chinese Hamster Ovary cell line, CHO-derived human FGFR4 protein Leu22-Asp369, with a C-terminal 6-His tag
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
<0.10 EU per 1 μg of the protein by the LAL method.
N-terminal sequence Analysis
Predicted Molecular Mass
60-70 kDa, under reducing conditions.
Measured by its binding ability in a functional ELISA. In a Human FGF acidic/FGF1 antibody (Catalog # AF232) coated plate, in the presence of 50.0 ng/mL of Recombinant Human FGF acidic/FGF1 (Catalog # 232-FA), Human FGFR4 His-tag Protein binds with an ED50 of 30.0-180 ng/mL.
Recombinant Human FGFR4 His-tag Protein, CF Scientific Data Examples
Recombinant Human FGFR4 His-tag Protein Bioactivity.
In a Human FGF acidic/FGF1 antibody (AF232) coated plate, in the presence of 50.0 ng/mL of Recombinant Human FGF acidic/FGF1 (232-FA), Recombinant Human FGFR4 His-tag Protein (Catalog # 11120-FR) binds with an ED50 of 30.0‑180 ng/mL.
Recombinant Human FGFR4 His-tag Protein SDS-PAGE.
2 μg/lane of Recombinant Human FGFR4 His-tag Protein (Catalog # 11120-FR) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing bands at 60-70 kDa.
Formulation, Preparation and Storage
What does CF mean?
CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our
Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant
protein to be stored at a more dilute concentration.
The carrier free version does not contain BSA.
What formulation is right for me?
In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or
as an ELISA standard.
In contrast, the carrier free protein is recommended for applications, in which the presence of BSA
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose.
Reconstitute at 500 μg/mL in PBS.
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.
Fibroblast growth factor receptor 4 (FGFR4) belongs to a family of type I transmembrane tyrosine kinases which mediate the biological functions of FGFs that are involved in a multitude of physiological and pathological cellular processes (1). The FGFR family is comprised of 4 structurally conserved members (FGFR1-4) all possessing and extracellular domain (ECD) with three immunoglobulin (Ig)-like domains, an acid-box region containing a run of acidic residues between the IgI and IgII domains, a transmembrane domain and the split tyrosine-kinase domain (1, 2). The ECD of mature human FGFR4 shares 90% amino acid sequence identity with mouse FGFR4. Alternative splicing of the IgIII domain generates multiple forms of FGFR1-3, but FGFR4 does not have a splice variant (3, 4). FGFR4 exhibits distinct and varying binding affinities for different FGF ligands, with FGF1, FGF4, and FGF8 showing the highest affinity (4). FGFRs mediate the FGF signaling cascade which regulate developmental processes including cellular proliferation, differentiation, and migration, morphogenesis, and patterning (5). FGFRs transduce the signals through three dominant pathways including RAS/MAPK, PI3k/AKT, and PLC gamma (6). FGFR4 is expressed at high levels during embryonic development and is required for the maintenance of both lipid and glucose metabolism as well as an established role in cholesterol metabolism (7). Overexpression of the FGFR4 has been reported in several solid tumors including breast cancer, prostate cancer, pancreatic cancer, and renal cell carcinoma (4, 8). Further, FGFR4 expression is significantly upregulated in most liver cancer cases, and enhanced FGF19-FGFR4 signaling is linked to hepatocellular carcinoma progression, metastasis, and poor survival (8). FGFR4 is being explored as a potential therapeutic target for breast cancer and other solid tumors (9).
Ornitz, D.M. and Itoh, N. (2015) Wiley Interdiscip Rev Dev, Biol. 4:215.
Zhang, X. et al. (2006) J Biol Chem. 281:15694.
Ferguson, H.R. et al. (2021) Signaling. Cells 10:1201.
Lang, L. and Teng, Y. (2019) Cells. 8:31.
Xie, Y. et al. (2020) Sig Transduct Target Ther 5:181.
Mossahebi-Mohammadi, M. et al. (2020) Front Cell Dev Biol. 18:79.
Huang, X. et al. (2007) Diabetes 56:2501.
Liu, Y. et al. (2020) Front Cell Dev Biol. 8:95.
Levine, K.M. et al. (2020) Pharmacol Ther. 214:107590.
Which Brands are Currently Available on bio‑techne.com? R&D Systems, Tocris Bioscience and ProteinSimple branded products are available to purchase through bio‑techne.com. ProteinSimple branded instruments are available to quote. ACD branded products will be available on bio‑techne.com in the near future. Novus Biologicals branded products are not currently available on bio‑techne.com and can be found at novusbio.com.
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