1. Section of Molecular Biophysics, Debye Research Institute, University Utrecht, Buys Ballot Laboratory, Princetonplein 5, 3584 CC, Utrecht, The Netherlands, Cardiovascular Research Institute Maastricht (CARIM), Department of Biophysics, University Maastricht, Universiteitssingel 50, 6229 ER, Maastricht, The Netherlands, and Van't Hoff Laboratory for Physical and Colloid Chemistry, Debye Research Institute, University Utrecht, Padualaan 8, 3584 CH, Utrecht, The Netherlands