1. Institute of Organic Chemistry; Johannes Gutenberg-University Mainz; Duesbergweg 10-14 55128 Mainz Germany
2. Institute of Immunology; University Medical Center Mainz; Langenbeckstrasse 1, Gebäude 708 55131 Mainz Germany
3. Molecular Signaling Unit-FZI; Research Center for Immune Therapy; University Medical Center Mainz; Langenbeckstrasse 1, Gebäude 708 55131 Mainz Germany