1. Institute of Bio- and Geosciences 1 Forschungszentrum Jülich GmbH 52428 Jülich Germany
2. Aachen Biology and Biotechnology RWTH Aachen University 52056 Aachen Germany
3. Institute of Technical and Macromolecular Chemistry RWTH Aachen University 52056 Aachen Germany
4. Institute of Organic Chemistry RWTH Aachen University 52056 Aachen Germany