Purity: > 95% by SDS - PAGE Format: In 20mM Tris 8.0, .20mM NaCl, 0.5mM DTT, 10% glycerol. Cyclophilin B (also known as PPIB, peptidylpropyl isomerase B) is a cyclosporine-binding protein and is mainly located within the endoplasmic reticulum. It is associated with the secretory pathway and released in biological fluids. This protein can bind to cells derived from T- and B-lymphocytes, and may regulate cyclosporine A-mediated immunosuppression. Recombinant human cyclophilin B was expressed in E.coli and purified by using conventional chromatography techniques