Bioinformatics Group, Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, D-14476 Potsdam-Golm, Germany. schudoma@mpimp-golm.mpg.de|Bioinformatics Group, Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, D-14476 Potsdam-Golm, Germany. schudoma@mpimp-golm.mpg.de|Bioinformatics Group, Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, D-14476 Potsdam-Golm, Germany. schudoma@mpimp-golm.mpg.de