1. Department of Biochemistry, Gene Center, Center of Integrated Protein Science (CIPSM), University of Munich, Feodor-Lynen-Str. 25, 81377 Munich, Germany
2. Current address: Alector Pharmaceuticals LLC, 953 Indiana Street, San Francisco, CA 94107
3. Rockefeller University, 1230 York Ave, New York, NY 10065-6399, USA