1. Laboratory of Physical Chemistry, ETH Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
2. Department of Discovery Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
3. Department of Structural Biology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
4. Department of Early Discovery Biochemistry, Genentech, Inc., South San Francisco, California 94080, United States