Description_x000D_ General description_x000D_ Human UBE3A (var1) (GenBank Accession No. NM_130838) amino acids 2-end with N-terminal His-FLAG-tag, MW=99.8 kDa, expressed in a Baculovirus infected Sf9 cell expression system._x000D_ Application_x000D_ Useful in conjunction with E1and E2 for the study of enzyme kinetics, screening inhibitors, and selectivity profiling._x000D_ Physical form_x000D_ Formulated in 40 mM Tris-HCl, pH 8.0, 110 mM NaCl, 2.2 mM KCl, 250mM imidazole, 20% Glycerol and 3mM DTT.