1. Department of Cell Biology and Institute of Biomembranes; Center for Molecular Medicine, University Medical Center Utrecht; Heidelberglaan 100 3584CX Utrecht The Netherlands
2. Present address: Institut Jacques Monod; CNRS, UMR7592, Université Paris Diderot; Sorbonne Paris Cité F-75013 Paris France
3. Present address: Monash Micro Imaging; 15 Innovation Walk, Strip 1 Monash Biotechnology, Monash University; Clayton VIC 3800 Australia