Department of Bioinformatics, University of Gxc3xb6ttingen, Institute of Microbiology and Genetics, Goldschmidtstr. 1, 37077?Gxc3xb6ttingen, Germany.|Department of Bioinformatics, University of Gxc3xb6ttingen, Institute of Microbiology and Genetics, Goldschmidtstr. 1, 37077?Gxc3xb6ttingen, Germany.|Department of Bioinformatics, University of Gxc3xb6ttingen, Institute of Microbiology and Genetics, Goldschmidtstr. 1, 37077xe2x80x89Gxc3xb6ttingen, Germany.