1. Institute for Molecular Biosciences, Goethe University, Frankfurt/M., Max-von-Laue-Str. 9, D-60438 Frankfurt, Germany and Center for Biomolecular Magnetic Resonance (BMRZ), Goethe University, Frankfurt/M., Max-von-Laue-Str. 9, D-60438 Frankfurt, Germany
2. Institute of Organic Chemistry, Centre for Molecular Biosciences (CMBI), University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
3. Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Institute of Molecular Biology & Biochemistry, Medical University of Graz, Neue Stiftingtalstrasse 6, 8010 Graz, Austria
4. BioTechMed-Graz, Graz, Austria
5. Leibniz-Institute on Aging - Fritz-Lipmann-Institute, Beutenbergstrasse 11, D-07745 Jena, Germany