1. Department of Biochemistry and
Biophysics, University of California—San Francisco, 600 16th Street, San Francisco, California 94158, United States
2. Onyx Pharmaceuticals, Inc., 249 E. Grand Avenue, South San Francisco, California
94080, United States
3. Pharmaceutical
Chemistry Department,
University of California—San Francisco, 1700 Fourth Street,
Byers Hall, San Francisco, California 94158, United States