1. Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, P.R. China, and Institute of Pharmacy and Biochemistry, J. Gutenberg-University of Mainz, Johann-Joachim Becherweg 30, 55128 Mainz, Germany