| Background | 
                                Activin is the member of the TGF beta superfamily of cytokines. The current understanding of Activin A is classified as a hormone, a growth factor, and a cytokine. Depending on the different cell type, that overexpression of Activin A can either inhibit or promote cells division. There are important implications for tumor biology. Activin A also increase joint inflammation in rheumatoid arthritis (RA) and induces pathogenic mechanisms in the respiratory system. | 
                            
                            
                            
                                | Synonyms | 
                                Inhibin beta A chain, Activin beta-A chain, Erythroid differentiation protein | 
                            
                            
                            
                                | Uniprot ID | 
                                P08476 | 
                            
                            
                            
                                | Molecular Weight | 
                                The protein has a calculated MW of 12.96 kDa.
The protein migrates as 13-17 kDa under reducing condition (SDS-PAGE analysis). | 
                            
                            
                            
                                | Expression System | 
                                Escherichia coli | 
                            
                            
                            
                                | Purity | 
                                >97% as determined by SDS-PAGE analysis. | 
                            
                            
                            
                                | Activity | 
                                Measure by its ability to inhibit the proliferation of mouse MPC-11 cells. The ED₅₀ for this effect is <10 ng/mL. The specific activity of recombinant human Activin A is approximately >1.0 x 10³ IU/mg. | 
                            
                            
                            
                                | Endotoxin Level | 
                                <0.05 EU per 1 μg of the protein by the LAL method. | 
                            
                            
                            
                                | Protein Sequence | 
                                GLECDGKVNICCKKQFFVSFKDIGWNDWIIAPSGYHANYCEGECPSHIAGTSGSSLSFHSTVINHYRMRGHSPFANLKSCCVPTKLRPMSMLYYDDGQNIIKKDIQNMIVEECGCS | 
                            
                            
                            
                                | Protein Tag | 
                                Tag Free | 
                            
                            
                            
                                | Form | 
                                Lyophilized from a 0.2 µm filtered solution of PBS, pH 7.4. | 
                            
                            
                           
                              
                                | Application | 
                                Cell Culture |