RPN2 Human Recombinant produced in E.coli is a single, non-glycosylated polypeptide chain containing 539 amino acids (23-540) and having a molecular mass of 59.2kDa. RPN2 is fused to a 21 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques. Purity >90.0% as determined by SDS-PAGE.