1. IBG-1: Biotechnology Forschungszentrum Jülich GmbH 52425 Jülich Germany
2. John Innes Centre Norwich Research Park Norwich NR4 7UH UK
3. Department of Chemistry University College London London WC1H 0AJ UK
4. Roche-Diagnostics GmbH DOZCBE 82377 Penzberg Germany
5. Department of Chemistry University of Graz 8010 Graz Austria
6. Department of Biochemical Engineering University College London London WC1E 6BT UK