About the Authors
Institut für Zoologie, Universität Regensburg, Regensburg, Germany
School of Biological and Chemical Sciences, Queen Mary, University of London, London, United Kingdom
Max-Planck-Institute of Molecular Physiology, Dortmund, Germany
The authors have declared that no competing interests exist.
JL, KFC, EW, and RS conceived and designed the experiments. JL and KFC performed the experiments. JL and KFC analyzed the data. EW contributed reagents/materials/analysis tools. RS wrote the paper.