Purity: > 90% by SDS - PAGE Format: Liquid in 20mM Tris pH 7.5, 0.1M NaCl.. Survivin is a human gene that is part of the inhibitor of apoptosis family (IAP). The Survivin protein functions to inhibit caspase activation therefore leading to negative regulation of apoptosis or programmed cell death. Recombinant human Survivin fused to CaM-tag at N-terminus was expressed in E.coli and purified by conventional chromatography techniques.