Product Properties Alternative Names UNQ3115, PRO10196, FGF-21, FGF21 Species Hamster Expression Sequence Arg29-Ser209 Accession XP_005084765.1 Tag C-His Expression System HEK293 Molecular Weight The protein has a predicted MW of 20.80 kDa. Due to glycosylation, the protein migrates to 21-30 kDa based on SDS-PAGE result. Purity > 95% as determined by SDS-PAGE,> 90% as determined by HPLC Endotoxin < 1.0 EU per μg by the LAL method. Formulation Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization. Appearance Lyophilized Powder Biological Activity SPR Data:Hamster FGF21, His Tag immobilized on CM5 Chip can bind Human Beta Klotho, His Tag with an affinity constant of 264.50 nM as determined in SPR assay . Reconstitution Method Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water. Features High purity, high activity, low endotoxin, high batch-to-batch consistency Storage Store at -25 ~ -15℃, valid for 1 year after receipt. After reconstitution, store at -85 ~ -65℃, valid for 3 months.