IGFBP6 Human Recombinant produced in E. Coli is a single polypeptide chain containing 236 amino acids (28-240) and having a molecular mass of 25.0kDa (Molecular size on SDS-PAGE will appear higher).;IGFBP6 is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.