1. Department of Physics and Astronomy, Institute for the Physics of Living Systems, University College London, London, United Kingdom
2. Yusuf Hamied Department of Chemistry, Centre for Misfolding Diseases, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
3. Medical Research Council Laboratory for Molecular Cell Biology, University College London, London, United Kingdom
4. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA