1. From the Departments of Biochemistry and Molecular Biology,
2. Cell and Neurobiology, and 3Ophthalmology, Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, California;
3. the Center for the Study of Macular Degeneration, Neuroscience Research Institute, University of California, Santa Barbara, California;
4. the Department of Neurology, University of Texas Medical Branch School of Medicine, Galveston, Texas;
5. the Department of Structural Biology, Pittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania; and
6. the Department of Molecular Biology and Biochemistry, School of Biological Sciences, University of California, Irvine, California.