1. Department
of Chemistry and Biochemistry, University of California, Santa Cruz, 1156 High Street, Santa Cruz, California 95064, United States
2. Modality
Research Laboratories, Daiichi Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
3. Department of Antibody Discovery & Protein Engineering, Medimmune Ltd., Cambridge CB21 6GH, United Kingdom