1. Department of Molecular Physiology and Biophysics, Vanderbilt School of Medicine, Nashville, Tennessee 37232, United States
2. Department of Biochemistry, Vanderbilt School of Medicine, Nashville, Tennessee 37240, United States
3. Center for Membrane and Cell Physiology and Department of Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, Virginia 22903, United States
4. Department of Pharmacology, Vanderbilt School of Medicine, Nashville, Tennessee 37232, United States
5. Vanderbilt Institute of Chemical Biology, High-Throughput Screening Facility, Vanderbilt School of Medicine, Nashville, Tennessee 37232, United States