1. Groningen Biomolecular Science & Biotechnology Institute, University of Groningen, 9747 AG, Groningen, The Netherlands
2. Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal
3. Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom