1. Department of Biochemistry, Campus B2.2, 66123, Saarland University, Saarbrücken, Germany
2. Laboratory of Biophysical Chemistry, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Nijenborgh 7, 9747 AG Groningen, The Netherlands
3. Center for Bioinformatics, Saarland University, Campus E2.1, 66123, Saarbücken, Germany