Recombinant Human FGF-4 (Recombinant Human Fibroblast Growth Factor-4; rHuFGF-4);重组人成纤维细胞生长因子4
Synonyms
HBGF-4; HST-1; KFGF; KS3; fibroblast growth factor 4; HBGF-4Transforming protein KS3; heparin secretory transforming protein 1; Heparin secretory-transforming protein 1; Heparin-binding growth factor 4; HST-1HSTF-1; HSTF1fibroblast growth factor 4 splice isoform; HSTFGF-4; human stomach cancer, transforming factor from FGF-related oncogene; kaposi sarcoma oncogene; KFGF; K-FGF; KS3; oncogene HST
Purity
>96% by SDS-PAGE and HPLC analyses.
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 0.5ng/ml, corresponding to a specific activity of >2.0×106IU/mg.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Formulation
Lyophilized from a 0.2μm filtered concentrated solution in 1X PBS, pH7.4, 300mM NaCl.
Endotoxin
Less than 1EU/μg of rHuFGF-4 as determined by LAL method.
Reconstitution
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 0.1-1.0mg/ml. Stock solutions should be apportioned into working aliquots and stored at ≤-20℃. Further dilutions should be made in appropriate buffered solutions.
Category
Cytokine
Background
FGF4, also named FGF-K and K-FGF, belongs to the fibroblast growth factor (FGF) family. By signaling through the FGF R1c, 2c, 3c and 4 receptors, FGF-4 has functions that maintain a population of progenitor cells in the epiblast that generates mesoderm, and contribute to the stem cell population that is incorporated in the tailbud. It is also required for axial elongation of the mouse embryo after gastrulation. Mature human FGF-4 (71-206a.a.) shares 91%, 82%, 94% and 91%a.a. identity with murine, rat, canine and bovine FGF-4. Additionally, FGF-4 shares about 30% sequence identity with the prototypical members of the FGF family.