Purity >90% by SDS-PAGE, MW: 10.6 kDa. GNG11 Human Recombinant produced in E. coli is. a single polypeptide chain containing 93 amino acids (1-70) and having a molecular mass of 10.6kDa. GNG11 is fused to a 23 amino acid His-tag at N-terminus and purified by proprietary chromatographic techniques.