About the Authors
Cell Biology and Biophysics Department, European Molecular Biology Laboratory, Heidelberg, Germany
Department of Systems Biology, Harvard Medical School, Boston, Massachusetts, United States of America
The authors have declared that no competing interests exist.
PN, IK, EK, and PB conceived and designed the experiments. PN and IK performed the experiments. PN, IK, PB, and EK analyzed the data. PN, SKL, and SR contributed reagents/materials/analysis tools. PN, IK, PB, and EK wrote the paper.