BTD Human Recombinant produced in Sf9 Baculovirus cells is a single, glycosylated polypeptide chain containing 510 amino acids (44-545a.a) and having a molecular mass of 57.8kDa. (Molecular size on SDS-PAGE will appear at approximately 50-70kDa).BTD is fused to an 8 amino acid His-tag at C-terminus & purified by proprietary chromatographic techniques. . Purity >85% as determined by SDS-PAGE.