1. Institute of Pharmaceutical BiotechnologyUlm University Ulm 89081 Germany
2. Synthesis of macromoleculesMax‐Planck Institute for Polymer Research Mainz 55128 Germany
3. Center for Protein StudiesHavana University Havana 10200 Cuba
4. Institute of Experimental PhysicsUlm University Ulm 89081 Germany
5. Center for Biochemical and Proteomics AnalysesCatholic University of Brasilia Brasilia 70040‐00 Brazil
6. Department of BiotechnologyCatholic University Dom Bosco Campo Grande 79117‐010 Brazil
7. Core Facility Functional PeptidomicsUlm University Hospital Ulm 89081 Germany
8. Central Facility for Electron MicroscopyUlm University Ulm 89081 Germany