Affiliation: | ‡Department of Biochemistry and Molecular Biology and the Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, the ∥National Institute of Mental Health, Bethesda, Maryland 20892, the §Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków 30–387, Poland, and ¶Elan Pharmaceuticals, South San Francisco, California 94080 |