Laboratory of Biocomputing, CIRB/Department of Biology, University of Bologna, Bologna, Italy. lisa@biocomp.unibo.it|Laboratory of Biocomputing, CIRB/Department of Biology, University of Bologna, Bologna, Italy. lisa@biocomp.unibo.it|Laboratory of Biocomputing, CIRB/Department of Biology, University of Bologna, Bologna, Italy. lisa@biocomp.unibo.it|Laboratory of Biocomputing, CIRB/Department of Biology, University of Bologna, Bologna, Italy. lisa@biocomp.unibo.it|Laboratory of Biocomputing, CIRB/Department of Biology, University of Bologna, Bologna, Italy. lisa@biocomp.unibo.it