1. Department of Molecular Cardiology, Experimental and Clinical Research Center (ECRC); Max Delbrück Center for Molecular Medicine and Charité Universitätsmedizin Berlin, Campus Buch; 13125 Berlin Germany
2. Institute of Molecular and Cell Physiology; Hannover Medical School; 30625 Hannover Germany
3. Institute of Physiological Chemistry; Hannover Medical School; 30625 Hannover Germany
4. Department of Intracellular Proteolysis; Max Delbrück Center for Molecular Medicine; 13125 Berlin Germany
5. Department of Molecular Muscle Physiology; Max Delbrück Center for Molecular Medicine; 13125 Berlin Germany
6. Department of Electron Microscopy; Max Delbrück Center for Molecular Medicine; 13125 Berlin Germany
7. Department of Mass Spectrometry; Max Delbrück Center for Molecular Medicine; 13125 Berlin Germany
8. Novartis Institutes for Biomedical Research; Cambridge Massachusetts 02139 USA
9. Department of Cardiovascular Molecular Genetics; Max Delbrück Center for Molecular Medicine; 13125 Berlin Germany
10. Department of Molecular Biology; University of Texas Southwestern Medical Center; Dallas Texas 75390-9148 USA
11. Department of Cardiology; Charité Universitätsmedizin Berlin, Campus Virchow; 13353 Berlin Germany