1. NMR Group - Institute of Physics, Martin Luther University Halle-Wittenberg, 06099 Halle (Saale), Germany
2. Department of Biotechnology and Biochemistry, Martin Luther University Halle-Wittenberg, 06099 Halle, Saale, Germany
3. Insitute of Chemistry, Martin Luther University Halle-Wittenberg, 06099 Halle, Saale, Germany