Department of Bioinformatics, University of Würzburg, Biocenter, Am Hubland, 97074 Würzburg, Germany. birgit.pils@biozentrum.uni-wuerzburg.de|Department of Bioinformatics, University of Würzburg, Biocenter, Am Hubland, 97074 Würzburg, Germany. birgit.pils@biozentrum.uni-wuerzburg.de|Department of Bioinformatics, University of Würzburg, Biocenter, Am Hubland, 97074 Würzburg, Germany. birgit.pils@biozentrum.uni-wuerzburg.de