BCB (Berlin Center for Genome Based Bioinformatics) at Institute of Biochemistry, Charité (University Medicine Berlin), Monbijoustr, 2, 10117 Berlin, Germany. elke.michalsky@charite.de|BCB (Berlin Center for Genome Based Bioinformatics) at Institute of Biochemistry, Charité (University Medicine Berlin), Monbijoustr, 2, 10117 Berlin, Germany. elke.michalsky@charite.de|BCB (Berlin Center for Genome Based Bioinformatics) at Institute of Biochemistry, Charité (University Medicine Berlin), Monbijoustr, 2, 10117 Berlin, Germany. elke.michalsky@charite.de|BCB (Berlin Center for Genome Based Bioinformatics) at Institute of Biochemistry, Charité (University Medicine Berlin), Monbijoustr, 2, 10117 Berlin, Germany. elke.michalsky@charite.de