Liquid. In sterile-filtered 100 mM KCl, 25 mM HEPES, pH 7.5. AVOID FREEZE/THAW CYCLES. Recombinant, human Bid (amino acids 1-195) expressed in E. coli and cleaved with recombinant, active, human-caspase-8. MW: ~7 and 15 kDa. Biological activity: EC50 = 10-50 nM based on induction of cytochrome c from isolated mouse liver mitochondria.. Purity: ≥95% by SDS-PAGE. |