1. Department of Chemical, Biological, Pharmaceutical and Environmental SciencesUniversity of Messina Viale Annunziata 98168 Messina Italy
2. DiSTABiFUniversity of Campania Luigi Vanvitelli Via Vivaldi 43 81100 Caserta Italy
3. Department Centre for Biomolecular Magnetic Resonance (BMRZ) Max von Laue Str. 9 60438 Frankfurt Germany
4. Department of Chemistry Section BiochemistryUniversity of Mainz Johann-Joachim-Becherweg 30 55128 Mainz Germany
5. Institute of Pharmaceutical and Biomedical SciencesUniversity of Mainz Staudingerweg 5 55128 Mainz Germany