Fully biologically active when compared to standard. The ED50 as determined by the dose-dependent stimulation of the proliferation of balb/c 3T3 cells is 100-150ng/ml,corresponding to a specific activity of > 6.6×103 units/mg.
纯度
> 95 % by SDS-PAGE and HPLC analyses.
内毒素水平
Level Less than 1EU/µg of rHuFGF-19 as determined by LAL method
FGF19
宿主: 人
宿主: 大肠杆菌(E. Coli)
Recombinant
>95 % as determined by SDS-PAGE
Func
Active
限制
仅限研究用
状态
Lyophilized
溶解方式
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 19 (FGF19) 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. Unlike most FGFs which bind to and activate more than one FGF receptor, FGF19 is a specific ligand for FGF R4. Synonym: Fibroblast Growth Factor-19( FGF-19), Human. Formulation: Lyophilized from a 0.2µm filtered concentrated solution in PBS, pH 7.4.
分子量
Approximately 21.8 kDa, a single non-glycosylated polypeptide chain containing 195 amino acids.