Synonyms : CTLA-4 Host : CHO cell Sequence : The extracellular domain of human CD152[CTLA-4](NP_005205.2)(Ala37-Ser160) is fused to the N-terminus of the Fc region of human IgG1. Molecular Mass : 39 KDa (monomer) Purity : >98%,by SDS-PAGE under reducing conditions. Endotoxin Content : <0.06 EU/μg as determined by LAL test. Activity : Measured by its ability to inhibit IL-2 secretion by stimulated Jurkat human acute T cell leukemia cells. Formulation : Lyophilized from 0.2μm-filtered solution in PBS. Reconstitution : Reconstitute at 100μg/ml in sterile PBS. Use / Stability : Stable for at least 1 year after receipt when stored at -20°C. Working aliquots are stable for upto 3 months when stored at -20°C.Avoid freeze/thaw cycles.