Center for Bioinformatics and Dept. of Computer Science, University of Tübingen, Sand 14, Tübingen, 72070, Germany. delagarza@informatik.uni-tuebingen.de.|Center for Bioinformatics and Dept. of Computer Science, University of Tübingen, Sand 14, Tübingen, 72070, Germany.|Center for Bioinformatics and Dept. of Computer Science, University of Tübingen, Sand 14, Tübingen, 72070, Germany.|Center for Bioinformatics and Dept. of Computer Science, University of Tübingen, Sand 14, Tübingen, 72070, Germany.|Algorithmic Bioinformatics, Computer Science Institute, Freie Universität Berlin, Takustr. 9, Berlin, 14195, Germany.|College of Engineering, University of Notre Dame, 257 Fitzpatrick Hall, Notre Dame, 46556, IN, United States.|Algorithmic Bioinformatics, Computer Science Institute, Freie Universität Berlin, Takustr. 9, Berlin, 14195, Germany.|Center for Bioinformatics and Dept. of Computer Science, University of Tübingen, Sand 14, Tübingen, 72070, Germany.