About the Authors
Department of Biochemistry, University of Zürich, Zürich, Switzerland
The Swiss Institute of Bioinformatics, Zürich, Switzerland
The Santa Fe Institute, Santa Fe, New Mexico, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: JFMR AW. Performed the experiments: JFMR. Analyzed the data: JFMR. Wrote the paper: JFMR AW.