1. Biosystems Chemistry, Department of Chemistry andCenter for Integrated Protein Science Munich (CIPSM)Technical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
2. Chair of Technical BiochemistryTechnical University of Dresden Bergstrasse 66 01069 Dresden Germany
3. Helmholtz Zentrum MünchenGerman Research Center for Environmental Health (GmbH)Institute of Virology Ingolstädter Landstrasse 1 85764 Neuherberg Germany
4. Immunopathology of Virus Infections LaboratoryInstitute of VirologyTechnical University of Munich Schneckenburgerstrasse 8 81675 Munich Germany