1 Biochemical Institute, Christian-Albrechts-University of Kiel, Kiel 24118, Germany; Laboratory for Retinal Cell Biology, Department of Ophthalmology, University Hospital Zurich, University of Zurich, Schlieren, Zurich 8952, Switzerland.
2 Biochemical Institute, Christian-Albrechts-University of Kiel, Kiel 24118, Germany.
3 Institute for Experimental Medicine, Christian-Albrechts-University of Kiel, Kiel 24118, Germany.
4 Laboratory Genes and Disease, Department of Dermatology and Department of Laboratory Medicine, Medical University of Vienna, Vienna 1090, Austria.
5 Center for Endocrinology, Diabetes and Preventive Medicine (CEDP), Max Planck Institute for Metabolism Research, Cologne 50931, Germany.
6 Department of Pediatric Surgery, Medical Faculty, Dresden University, Dresden 01307, Germany.
7 MPI of Molecular Cell Biology and Genetics, Dresden 01307, Germany.
8 Biochemical Institute, Christian-Albrechts-University of Kiel, Kiel 24118, Germany. Electronic address: [email protected].