| Background | 
                                Interleukin-10 (IL-10), also known as human cytokine synthesis inhibitory factor (CSIF), is an anti-inflammatory cytokine. Many different types of cells can produce IL-10, including immune cells and non-immune cells. IL-10 exerts inhibitory functions on DCs and macrophages, which is a potent inhibitor of antigen presentation and limit the production of the Th1-associated cytokines IL-2 and interferon-γ (IFN-γ). IL-10 is also a key immunoregulator during infection due to its inhibitory effect on inflammatory cytokine production. Consequently, the excessive Th1 and CD8+ T cell responses could be suppressed during infection. | 
                            
                            
                            
                                | Synonyms | 
                                interleukin 10, B-TCGF, CSIF, TGIF, IL10 | 
                            
                            
                            
                                | Uniprot ID | 
                                P22301 | 
                            
                            
                            
                                | Molecular Weight | 
                                The protein has a calculated MW of 19.6 kDa.
The protein migrates as 20 kDa under reducing condition (SDS-PAGE analysis). | 
                            
                            
                            
                                | Expression System | 
                                Escherichia coli | 
                            
                            
                            
                                | Purity | 
                                >98% as determined by SDS-PAGE analysis. | 
                            
                            
                            
                                | Activity | 
                                Measure by its ability to induce MC/9‑2 cells proliferation. The ED₅₀ for this effect is <1 ng/mL. The specific activity of recombinant human IL-10 is approximately >1x10⁶ IU/ mg. | 
                            
                            
                            
                                | Endotoxin Level | 
                                <0.05 EU per 1 μg of the protein by the LAL method. | 
                            
                            
                            
                                | Protein Sequence | 
                                MSPGQGTQSENSCTHFPGNLPNMLRDLRDAFSRVKTFFQMKDQLDNLLLKESLLEDFKGYLGCQALSEMIQFYLEEVMPQAENQDPDIKAHVNSLGENLKTLRLRLRRCHRFLPCENKSKAVEQVKNAFNKLQEKGIYKAMSEFDIFINYIEAYMTMKIRN with polyhistidine tag at the C-terminus | 
                            
                            
                            
                                | Protein Tag | 
                                His Tag (C-term) | 
                            
                            
                            
                                | Form | 
                                Lyophilized from a 0.2 µm filtered solution of PBS, pH 8.0. | 
                            
                            
                           
                              
                                | Application | 
                                Cell Culture |