| Species : | Human | 
                                
                                    | Source : | CHO | 
                                
                                    | Tag : | Non | 
                                
                                    | Protein Length : | 254-372 a.a. | 
                                
                                    | Description : | GDF1 is a 12-15 kDasecreted protein in the TGFβ superfamily. It is the functional equivalent offrog, zebrafish, and chick Vg1. Human GDF1 is synthesized as a preproproteinthat contains a 29 amino acid (aa) signal peptide, a 224 aa propeptide, and a119 aa mature peptide which is released following proteolysis at a dibasic cleavagesite. Mature human GDF1 shares 81% aa sequence identity with mouse and ratGDF1. GDF1 is expressed in the developing and adult nervous system,particularly in neurons of the cerebral cortex and hippocampus. | 
                                
                                    | Form : | Lyophilized from a0.2 μm filtered solution in HCl with BSA as a carrier protein. | 
                                
                                    | N-terminalSequence : | Asp254 | 
                                
                                    | Molecular Weight : | 12.6 kDa | 
                                
                                    | Activity : | Measuredby its ability to induce Smad2 phosphorylation in P19 mouse embryonalcarcinoma cells. Mazerbourg, S. et al. (2004) Mol. Endocrinol. 18:653. 50ng/mL of Recombinant Human GDF1 can effectively induce Smad2 phosphorylation. | 
                                
                                    | Endotoxin Level : | <1.0 EUper 1 μg of the protein by the LAL method. | 
                                
                                    | SDS-PAGE : | 13 kDa,reducing conditions. | 
                                
                                    | Purity : | >95%,by SDS-PAGE under reducing conditions and visualized by silver stain. | 
                                
                                    | Reconstitution : | 100μg/mL in 4 mM HCl that containing at least 0.1% human or bovine serum albumin. | 
                                
                                    | Storage : | Use amanual defrost freezer and avoid repeated freeze-thaw cycles. 12 months fromdate of receipt, -20 to -70°C as supplied. 1 month, 2 to 8°C under sterileconditions after reconstitution. 3 months, -20 to -70°C under sterileconditions after reconstitution. |