Name : FGF-23, Human
Product Concentration :
Background :
Fibroblast growth factor-23 (FGF-23) belongs to the large FGF family which has at least 23 members. All FGF family members are heparin binding growth factors with a core 120 amino acid (a.a.) FGF domain that allows for a common tertiary structure. FGFs are expressed during embryonic development and in restricted adult tissues. Four distinct but related classes of FGF receptors, FGF R1, 2, 3, and 4, exist. FGF-23 is produced by osteocytes and osteoblasts in response to high circulating phosphate levels, elevated parathyroid hormone, and circulatory volume loading. It functions as an endocrine phosphatonin by suppressing circulating phosphate levels. FGF-23 interaction with renal proximal tubular epithelium decreases the renal resorption of phosphate by down regulating phosphate transporters and by suppressing vitamin D production. It also decreases the intestinal absorption of phosphate.
Biological Activity :
Fully biologically active when compared to standard. The ED50 as determined by thymidine uptake assay using FGF-receptors transfected BaF3 cells is less than 0.5 μg/ml, corresponding to a specific activity of > 2.0 × 103 IU/mg in the presence of 0.3 μg/ml of rMuKlotho and 10 μg/ml of heparin.
expression system :
E. coli
Tag :
FGF-23 (Tyr25-Ile251)Accession # Q9GZV9
Protein Accession No. :
Q9GZV9
Synonyms :
FGF23; ADHR; FGFN; HPDR2; HYPF; PHPTC; fibroblast growth factor 23; HFTC2
Molecular Weight :
Purity :
> 95% as analyzed by SDS-PAGE> 95% as analyzed by HPLC
Product Concentration :
Lyophilized from a 0.2 μm filtered solution in PBS, pH 7.4.
Storage and Stability :
Upon receiving, this product remains stable for up to 6 months at -70°C or -20°C. Upon reconstitution, the product should be stable for up to 1 week at 4°C or up to 3 months at -20°C. Avoid repeated freeze-thaw cycles.
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