1. Institute of Chemistry, Federal University of Rio de Janeiro (UFRJ), 21431-909 Brazil
2. Institute of Microbiology and Genetics, Department of Molecular Microbiology and Genetics, Georg-August-Universität Göttingen, 37077 Germany
3. Department of Experimental Neurodegeneration, Center for Nanoscale Microscopy and Molecular Physiology of the Brain, Center for Biostructural Imaging of Neurodegeneration, University Medical Center Göttingen, 37073 Göttingen, Germany
4. Max Planck Institute for Experimental Medicine, 37075 Göttingen, Germany