1. Department of Biochemistry University of Cambridge 80 Tennis Court Road CB2 1GA Cambridge UK
2. Current address: ICB Nuvisan GmbH Müllerstraße 178 13353 Berlin Germany
3. Johnson Matthey Plc 260 Cambridge Science Park CB4 0WE Cambridge UK
4. Current address: BioNTech Cell & Gene Therapies GmbH An der Goldgrube 12 55131 Mainz Germany
5. Current address: Department of Environmental Microbiology and Biotechnology Institute of Microbiology Faculty of Biology University of Warsaw Miecznikowa 1 02-096 Warsaw Poland
6. Current address: Janssen Pharmaceutica Turnhoutseweg 30 2340 Beerse Belgium