1. Institute of Biochemistry, Medical Faculty, Friedrich-Alexander-University of Erlangen-Nürnberg , 91054 Erlangen , Germany
2. Nephrology Division, Department of Medicine, Baylor College of Medicine , Houston , TX , USA
3. Łukasiewicz Research Network-PORT Polish Center for Technology Development , Wrocław , Poland
4. Muscle Research Center, Friedrich-Alexander-University of Erlangen-Nürnberg , 91054 Erlangen , Germany