1. Membrane Protein Research Group, University of Alberta, Edmonton, Alberta, Canada, T6G 2H7
2. Department of Oncology, University of Alberta, Cross Cancer Institute, 11560 University Avenue, Edmonton, Alberta, Canada, T6G 1Z2
3. Institute of Membrane and Systems Biology, University of Leeds, Leeds LS2 9JT, U.K.
4. Department of Physiology, University of Alberta, Edmonton, Alberta, Canada, T6G 2H7