1. Department of Molecular and Cell Biology, University of Leicester, Lancaster Road, Leicester LE1 9HN, UK.
2. Institute of Structural and Molecular Biology, Birkbeck College, Malet Street, London WC1E 7HX, UK.
3. Astbury Centre for Structural Molecular Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK.
4. Centre for Core Biotechnology Services, University of Leicester, University Road, Leicester LE1 7RH, UK.
5. Centre for Mechanochemical Cell Biology and Division of Biomedical Sciences, Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK.