1. Department of Pharmaceutical Sciences, University of California, Irvine, California 92617, United States
2. Department of Peptide Therapeutics, Genentech Inc., South San Francisco, California 94080, United States
3. Department of Drug Metabolism and Pharmacokinetics, Genentech Inc., South San Francisco 94080, United States
4. Departments of Chemistry and Biomedical Engineering, University of California, Irvine, California 92617, United States