Department of Life and Environmental Sciences, College of Natural and Health Sciences, Zayed University, Abu Dhabi, UAE. Department of Bioinformatics, Biocenter, University of Wuerzburg, Wuerzburg, Germany. Department of Bioinformatics, Biocenter, University of Wuerzburg, Wuerzburg, Germany. dandekar@biozentrum.uni-wuerzburg.de.