1. Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, United Kingdom
2. School of Chemistry, University of Leeds, Leeds LS2 9JT, United Kingdom
3. School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, United Kingdom
4. School of Mathematics, University of Bristol, Bristol BS8 1TW, United Kingdom
5. BrisSynBio, Life Sciences Building, University of Bristol, Bristol BS8 1TQ, United Kingdom
6. Institute for Nanostructure and Solid State Physics, Universität Hamburg, Hamburg D-22761, Germany