Dopa decarboxylase human recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 503 amino acids (1-480 a.a.) and having a molecular mass of 56.4 kDa. The Dopa decarboxylase is fused to a 23 amino acid His Tag at N-terminus and purified by conventional chromatpgraphy. Purity >95.0% as determined by SDS-PAGE.