| Species : | Human | 
                                
                                    | Source : | HEK293 | 
                                
                                    | Tag : | His | 
                                
                                    | Protein Length : | 1-688 aa | 
                                
                                    | Form : | Lyophilized from sterile PBS, pH 7.4. | 
                                
                                    | Bio-activity : | Measured by its ability to cleave a colorimetric peptide substrate, N-carbobenzyloxy-Lys-ThioBenzyl ester (Z-Lys-SBzl), in the presence of 5,5’Dithio-bis (2-nitrobenzoic acid) (DTNB). The specific activity is > 7,000 pmoles/min/μg, as measured under the described conditions. | 
                                
                                    | Molecular Mass : | The recombinant human C1s protease consists of 684 amino acids and has a predicted molecular mass of 76.3 kDa. As a result of glycosylation, rhC1s migrates as an approximately 82.06 kDa, 56.59 kDa and 33.36 kDa band in SDS-PAGE under reducing conditions. The molecular weight of this protein is around 88.5 kDa verified by SEC-MALS(Routinely tested). | 
                                
                                    | Endotoxin : | < 1.0 EU per μg of the protein as determined by the LAL method | 
                                
                                    | Purity : | ≥ 90 % as determined by SDS-PAGE. ≥ 90% as determined by SEC-HPLC. ≥ 90 % as determined by SEC-MALS. | 
                                
                                    | 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. |