Human FGF-19 Biotinylated Antibody

Catalog # Availability Size / Price Qty
Product Details
Citations (6)
Supplemental Products

Human FGF-19 Biotinylated Antibody Summary

Species Reactivity
Detects human FGF-19 in ELISAs and Western blots. In sandwich immunoassays, less than 0.05% cross-reactivity with recombinant mouse FGF‑15 is observed.
Polyclonal Goat IgG
Antigen Affinity-purified
E. coli-derived recombinant human FGF-19 (R&D Systems, Catalog # 969-FG)
Accession # O95750
Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.


Recommended Concentration
Western Blot
0.1 µg/mL
Recombinant Human FGF‑19 (Catalog # 969-FG)

Human FGF-19 Sandwich Immunoassay

Recommended Concentration
ELISA Detection (Matched Antibody Pair)
0.1-0.4 µg/mL 

Use in combination with:

Capture Reagent: Human FGF‑19 Antibody (Catalog # MAB9691)

Standard: Recombinant Human FGF-19 Protein (Catalog # 969-FG)

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
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.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: FGF-19

Fibroblast growth factor 19 (FGF-19) belongs to the large FGF family which has at least 23 members (1, 2). All FGF family members are heparin-binding growth factors with a core 120 amino acid (aa) FGF domain that allows for a common tertiary structure. FGFs are expressed during embryonic development and in restricted adult tissues. They act on cells of mesodermal and neuroectodermal origin to regulate diverse physiologic functions including angiogenesis, cell growth, pattern formation, embryonic development, metabolic regulation, cell migration, neurotrophic effects and tissue repair (3, 4). Signaling receptors for FGFs are type I transmembrane receptor tyrosine kinases belonging to the Ig superfamily. Four distinct but related classes of FGF receptors, FGF R1, 2, 3, and 4, exist. Through alternative splicing, multiple isoforms for FGF R1, 2 and 3, with distinct ligand recognition profiles, are also generated (4).

Human FGF-19 cDNA predicts a 251 aa precursor protein with a 22 aa signal peptide and a 229 aa secreted mature protein with no potential N-linked glycosylation sites (1, 2). Among FGF family members, human FGF-19 is most closely related to chicken FGF-19 and murine FGF-15, sharing approximately 61% and 51% aa sequence identity, respectively (1, 2, 5). Neither the human orthologue of mouse FGF-15, nor the mouse counterpart of human FGF-19 has been identified. With the exception of adult gall bladder epithelium, FGF-19 expression is restricted to fetal tissues (1, 2). Unlike most FGFs which bind to and activate more than one FGF receptor, FGF-19 is a specific ligand for FGF R4 (2). Similarly, another FGF family member, FGF-7 (KGF), only activates KGF R, the IIIb isoform of FGF R2 (4). During chick embryogenesis, FGF-19 has been shown to act synergistically with Wnt-8c to initiate inner ear development (5).

  1. Nishimura, T. et al. (1999) Biocheim. Biophys. Acta 1444:148.
  2. Xie, M. et al. (1999) Cytokine 11:729.
  3. Goldfarb, M. (1996) Cytokine & Growth Factor Reviews 7:311.
  4. Green, P. et al. (1996) BioEssays 18:639.
  5. Ladher, R.K. et al. (2000) Science 290:1965.
Long Name
Fibroblast Growth Factor 19
Entrez Gene IDs
9965 (Human)
Alternate Names
FGF19; FGF-19; fibroblast growth factor 19

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Citations for Human FGF-19 Biotinylated Antibody

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

6 Citations: Showing 1 - 6
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  1. Pre-clinical development of U3-1784, a novel FGFR4 antibody against cancer, and avoidance of its on-target toxicity
    Authors: R Bartz, K Fukuchi, T Ohtsuka, T Lange, K Gruner, I Watanabe, S Hayashi, Y Oda, R Kawaida, H Komori, Y Kashimoto, P Wirtz, JA Mayer, M Redondo-Mü, S Saito, M Takahashi, H Hanzawa, E Imai, A Martinez, M Hanai, D Häussinger, RW Chapman, T Agatsuma, J Bange, R Abraham
    Mol. Cancer Ther., 2019;0(0):.
    Species: Human
    Sample Types: Recombinant Protein
    Applications: ELISA Detection
  2. Characterization of a FGF19 variant with altered receptor specificity revealed a central role for FGFR1c in the regulation of glucose metabolism.
    Authors: Ge H, Baribault H, Vonderfecht S, Lemon B, Weiszmann J, Gardner J, Lee KJ, Gupte J, Mookherjee P, Wang M, Sheng J, Wu X, Li Y
    PLoS ONE, 2012;7(3):e33603.
    Species: Mouse
    Sample Types: Plasma
    Applications: ELISA Development
  3. FGF19 Regulates Cell Proliferation, Glucose and Bile Acid Metabolism via FGFR4-Dependent and Independent Pathways.
    Authors: Wu AL, Coulter S, Liddle C, Wong A, Eastham-Anderson J, French DM, Peterson AS, Sonoda J
    PLoS ONE, 2011;6(3):e17868.
    Species: Human
    Sample Types: Recombinant Protein
    Applications: ELISA Development
  4. The hepatic response to FGF19 is impaired in patients with nonalcoholic fatty liver disease and insulin resistance.
    Authors: Schreuder TC, Marsman HA, Lenicek M
    Am. J. Physiol. Gastrointest. Liver Physiol., 2010;298(3):G440-5.
    Species: Human
    Sample Types: Plasma
    Applications: ELISA Development
  5. High expression of the bile salt-homeostatic hormone fibroblast growth factor 19 in the liver of patients with extrahepatic cholestasis.
    Authors: Schaap FG, van der Gaag NA, Gouma DJ
    Hepatology, 2009;49(4):1228-35.
    Species: Human
    Sample Types: Plasma
    Applications: ELISA Development
  6. Targeting FGF19 inhibits tumor growth in colon cancer xenograft and FGF19 transgenic hepatocellular carcinoma models.
    Authors: Desnoyers LR, Pai R, Ferrando RE, Hotzel K, Le T, Ross J, Carano R, D'Souza A, Qing J, Mohtashemi I, Ashkenazi A, French DM
    Oncogene, 2007;27(1):85-97.
    Species: Human
    Sample Types: Cell Lysates
    Applications: Western Blot


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