About the Authors

David Walter

Current address: Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark.

Affiliation M.E. Müller Institute for Structural Biology, Biozentrum, University of Basel, Basel, Switzerland

Anja Matter

Affiliation M.E. Müller Institute for Structural Biology, Biozentrum, University of Basel, Basel, Switzerland

Birthe Fahrenkrog

bfahrenk@ulb.ac.be

Affiliations M.E. Müller Institute for Structural Biology, Biozentrum, University of Basel, Basel, Switzerland, Institute for Molecular Biology and Medicine, Université Libre de Bruxelles, Charleroi, Belgium

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DW BF. Performed the experiments: DW AM BF. Analyzed the data: DW BF. Contributed reagents/materials/analysis tools: DW AM BF. Wrote the paper: DW BF.