1. Dipartimento di Scienze Biochimiche “A. Rossi Fanelli”, Sapienza, Università di Roma, Piazzale A. Moro 5, I-00185 Rome, Italy
2. Dipartimento di Chimica ″Ugo Schiff″, Università di Firenze, Via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy
3. Zuckerman Mind Brain Behavior Institute, Columbia University, 3227 Broadway, New York, New York 10027, United States
4. Center for Life Nanoscience, Istituto Italiano di Tecnologia, Viale Regina Elena, 291, I-00161 Rome, Italy
5. Institute of Molecular Biology and Pathology, National Research Council, Piazzale A. Moro 5, 00185 Rome, Italy
6. Department of Mathematical, Physical and Computer Sciences, University of Parma, Parco Area delle Scienze, 7/A, I-43124 Parma, Italy
7. Department of Food and Drugs, University of Parma, Parco Area delle Scienze 27/A, I-43124 Parma, Italy
8. Theoretical Physics and Center for Biophysics, Saarland University, Campus E2 6, 66123 Saarbrücken, Germany