Purity >90% by SDS-PAGE, MW: 44.1 kDa. VAT1 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 413 amino acids (1-393 a.a.) and having a molecular mass of 44.1kDa. VAT1 is fused to a 20 amino acid His-tag at N-terminus and purified by proprietary chromatographic techniques.