Fully biologically active when compared to standard. The ED50 determined by a cell proliferation assay using murine NIH/3T3 cells is less than 600 ng/ml, corresponding to a specific activity of >, 1.7 × 103 IU/mg in the presence of 5myg/ml of rMuKlotho-beta.
Pureté
> 95 % by SDS-PAGE and HPLC analyses.
niveau d'endotoxine
Level Less than 1EU/µg of rHuFGF-21 as determined by LAL method
FGF21
Origine: Humain
Hôte: HEK-293 Cells
Recombinant
The purity of the protein is greater than 95 % as determined by SDS-PAGE and Coomassie blue staining.
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/ml. Stock solutions should be apportioned into working aliquots and stored at < -20 °C. Further dilutions should be made in appropriate buffered solutions.
Fibroblast growth factor 21 (FGF21) 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 (aa) 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-21, in the presence of betaKlotho as a protein cofactor, signals through the FGFR 1c and 4 receptors and stimulates insulin independent glucose uptake by adipocytes. Synonym: Fibroblast Growth Factor-21(FGF-21), Human. Formulation: Lyophilized from a 0.2µm filtered concentrated solution in PBS, pH 7.4.
Poids moléculaire
Approximately 19.5 kDa, a single non-glycosylated polypeptide chain containing 182 amino acids.