1Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720 USA
2Department of Medicine, Oregon Health and Science University, Portland, OR 97239 USA
3Department of Chemistry, Ludwig-Maximilians-Universität München and Munich Center for Integrated Protein Science, Butenandtstrasse 5-13, 81377 München, Germany
4Laboratory of Protein Engineering, Institut des Sciences et Ingénierie Chimiques, Sciences de Base, École Polytechnique Fédérale Lausanne, 1015 Lausanne, Switzerland
5Department of Biosystems Science Engineering, ETH Zürich, Mattenstrasse 26, 4058 Basel, Switzerland
6Helen Wills Neuroscience Institute, University of California, Berkeley, CA 94720 USA
7Biophysics Graduate Program, University of California, Berkeley, CA 94720 USA
8School of Optometry, University of California, Berkeley, CA 94720 USA
9Bioscience Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA
10Present Address: Department of Biochemistry, Weill Cornell Medical College, New York City, New York 10024 USA
11Present Address: Department of Chemical Biology, Max-Planck Institute for Medical Research, Jahnstr. 29, 69120 Heidelberg, Germany
12Present Address: Department of Chemistry, New York University, New York City, New York 10003 USA
© The Author(s) 2018
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