1. Department of Informatics & Center for Bioinformatics & Computational Biology-i12; Technische Universität München (TUM); Garching/Munich 85748 Germany
2. New York Consortium on Membrane Protein Structure (NYCOMPS), New York Structural Biology Center; New York New York 10027
3. Institute of Advanced Study (TUM-IAS); Garching/Munich 85748 Germany
4. Institute for Food and Plant Sciences WZW-Weihenstephan; Freising Germany