Department of Biology, Bioinformatics Group, Darmstadt University of Technology, Darmstadt, Germany. mamuelow@web.de|Department of Biology, Bioinformatics Group, Darmstadt University of Technology, Darmstadt, Germany. mamuelow@web.de|Department of Biology, Bioinformatics Group, Darmstadt University of Technology, Darmstadt, Germany. mamuelow@web.de