FabRICATOR, 8100 Units Lyophilized FabRICATOR (IdeS) for digestion of 8 x 100 g of antibody. Enzyme is reconstituted by addition of water. FabRICATOR (IdesS) is a unique protease that cleaves IgGs and Fc-fusions at one single amino acid position in the lower hinge region generating Fc and F(ab')2 fragments.