| Species : | Human | 
                                
                                    | Source : | HEK293 | 
                                
                                    | Tag : | His | 
                                
                                    | Protein Length : | Met1-Thr172 | 
                                
                                    | Form : | Lyophilized from sterile PBS, pH 7.4Please contact us for any concerns or special requirements. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA. | 
                                
                                    | Bio-activity : | Measured by its binding ability in a functional ELISA. Immobilized human TDGF1 at 2 μg/ml (100 μl/well) can bind human ALK4 with a linear range of 0.0068-0.16 μg/ml. | 
                                
                                    | Molecular Mass : | The secreted recombinant human TDGF1 comprises 153 amino acids with a predicted molecular mass of 17.4 kDa. As a result of glycosylation, the apparent molecular mass of rhTDGF1 is approximately 25-30 kDa in SDS-PAGE under reducing conditions. | 
                                
                                    | Endotoxin : | < 1.0 EU per μg of the protein as determined by the LAL method | 
                                
                                    | Purity : | > 95 % as determined by SDS-PAGE | 
                                
                                    | Storage : | Samples are stable for up to twelve months from date of receipt at -20°C to -80°C. Store it under sterile conditions at -20°C to -80°C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles. | 
                                
                                    | Reconstitution : | It is recommended that sterile water be added to the vial to prepare a stock solution of 0.2 ug/ul. Centrifuge the vial at 4°C before opening to recover the entire contents. |