1. Rudolf Virchow Center for Experimental Biomedicine, University of Würzburg, 97080 Würzburg, Germany
2. Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo 05508-000, Brazil
3. Theodor-Boveri-Institute, Biocenter, University of Würzburg, 97074 Würzburg, Germany