1. Department of Pharmaceutical Chemistry and Bioanalytics, Institute of Pharmacy Martin Luther University Halle-Wittenberg Kurt-Mothes-Str. 3 06120 Halle/Saale Germany
2. Center for Structural Mass Spectrometry Martin Luther University Halle-Wittenberg Kurt-Mothes-Str. 3 06120 Halle/Saale Germany
3. Department of Plant Biochemistry Charles Tanford Protein Center Institute for Biochemistry and Biotechnology Martin-Luther University Halle-Wittenberg Kurt-Mothes-Str. 3 06120 Halle/Saale Germany
4. Department of Physical and Chemical Sciences University of L'Aquila Via Vetoio, Coppito 67100 L'Aquila Italy