Department of Microbiology, Tumour and Cell biology, Bioinformatics Infrastructure for Life Sciences, Science for Life Laboratory, Karolinska Institutet, 17177 Stockholm, Sweden. andrej.alekseenko@scilifelab.se.|Department of Microbiology, Tumour and Cell biology, Bioinformatics Infrastructure for Life Sciences, Science for Life Laboratory, Karolinska Institutet, 17177 Stockholm, Sweden. andrej.alekseenko@scilifelab.se.|Department of Microbiology, Tumour and Cell biology, Bioinformatics Infrastructure for Life Sciences, Science for Life Laboratory, Karolinska Institutet, 17177 Stockholm, Sweden. andrej.alekseenko@scilifelab.se.|Department of Microbiology, Tumour and Cell biology, Bioinformatics Infrastructure for Life Sciences, Science for Life Laboratory, Karolinska Institutet, 17177 Stockholm, Sweden. andrej.alekseenko@scilifelab.se.|Department of Computer Science and Information Engineering, University of Trento, via Sommarive 5, I-38123 (Povo) Trento, Italy. passerini@disi.unitn.it.