1 Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy; SYSBIO.ISBE.IT, Centre of Systems Biology, Milano, Italy. Electronic address: marco.vanoni@unimib.it.
2 Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy. Electronic address: pasquale.palumbo@unimib.it.