The goal of this project is to develop a general system for preparative enzyme-catalyzed methylation reactions. Selective methylation of complex molecules can be challenging for synthetic chemistry. Given the exquisite chemo-, regio- and stereoselectivities of enzyme catalysis we believe that biocatalysis presents a powerful alternative for commercial production of pharmaceuticals and fine chemicals. In this project we demonstrate the applicability and commercial viability of a novel enzyme-based technology to preparative methylation reactions.