Abstract:
The invention relates to providing both fermentative and biotechnological methods for producing 3,4-methylized cinnamic acids, 3,4-methylized cinnamic acid esters, 3,4-dimethoxyphenethylamine, and 4-methylized cinnamic acid amides using a 4′-O-methyltransferase, optionally in combination with further enzymes, wherein the enzymes are selected by means of metabolic engineering and operation have been adapted by targeted optimization, and compositions obtained by means of the method.The invention further relates to vector systems, recombinant microorganisms or fungi, and specific nucleic acid segments and polypeptides.