1. Osnabrück University 1 , Department of Biology/Chemistry, Biochemistry section, Barbarastrasse 13, 49076 Osnabrück , Germany
2. Osnabrück University 2 , Department of Biology/Chemistry, Structural Biology, Barbarastrasse 13, 49076 Osnabrück , Germany
3. University of Fribourg 3 Department of Biology , , Chemin du Musée, CH-1700 Fribourg , Switzerland
4. Osnabrück University 4 , Department of Biology/Chemistry, Molecular Membrane Biology, Barbarastrasse 13, 49076 Osnabrück , Germany
5. Osnabrück University, Center of Cellular Nanoanalytic Osnabrück (CellNanOs) 5 , Barbarastrasse 13, 49076 Osnabrück , Germany