About the Authors
Ecole normale supérieure de Lyon–CNRS–Université de Lyon Claude Bernard, Molecular Biology of the Cell Laboratory/UMR5239, Lyon, France
The authors have declared that no competing interests exist.
The author(s) have made the following declarations about their contributions: Conceived and designed the experiments: JG HA. Performed the experiments: JG SB ETM MS YC. Analyzed the data: JG HA. Contributed reagents/materials/analysis tools: HA. Wrote the paper: HA.