1. Swammerdam Institute for Life Sciences, BioCentrum Amsterdam, University of Amsterdam, Kruislaan 318, 1098 SM Amsterdam, The Netherlands
2. Center for Mathematics and Computer Science, CWI, 1090 GB Amsterdam, The Netherlands
3. Nephrology Research Lab, Nijmegen Center for Molecular Life Sciences, Division of Nephrology, University Medical Center, Nijmegen, The Netherlands
4. Department of Cell and Structural Biology, University of Illinois, Urbana-Champaign, Urbana, Illinois 61801