1. Biophysics Research Institute, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, Biophysics Department, Institute of Molecular Biology, Jagiellonian University, Krakow, Poland, Department of Biochemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2H7, Department of Biological Science, Nagoya University, Nagoya 464-8602, Japan, and Kusumi Membrane Organizer Project, Exploratory Research on Advanced Technology Organization, JST, Kumazaki Building, 5-11-33 Chiyoda, Nagoya 464-0012, Japan