Supplementary information

Institute for Bioengineering, School of Engineering, The University of Edinburgh, EH9 3DW Edinburgh, Scotland, UK SynthSys Centre for Synthetic and Systems Biology, The University of Edinburgh, EH9 3BF Edinburgh, Scotland, UK Institute of Environmental Engineering, Department of Civil, Environmental and Geomatic Engineering, ETH Zurich, 8093 Zurich, Switzerland Ralph M. Parsons Laboratory, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA The Program in Applied and Computational Mathematic, Fine Hall, Washington Road, Princeton, NJ 08544, USA Department of Mathematics, Hill Center, 110 Frelinghuysen Rd, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA