1. Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.
2. School of Biological Sciences, University of Wollongong, Wollongong, New South Wales, Australia.
3. Department of Biochemistry and Structural Biology, Lund University, Box 124, SE221 00 Lund, Sweden.
4. Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge CB3 0HE, UK.
5. Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg, 8093 Zurich, Switzerland.