Bioinformatics Resource Faciliy, Center for Biotechnology and Faculty of Technology, Bielefeld University, 33615 Bielefeld, Germany. blinke@ceBiTec.Uni-Bielefeld.De|Bioinformatics Resource Faciliy, Center for Biotechnology and Faculty of Technology, Bielefeld University, 33615 Bielefeld, Germany. blinke@ceBiTec.Uni-Bielefeld.De|Bioinformatics Resource Faciliy, Center for Biotechnology and Faculty of Technology, Bielefeld University, 33615 Bielefeld, Germany. blinke@ceBiTec.Uni-Bielefeld.De