1 Institute of Pharmacy, University of Hamburg, Bundesstr. 43, 20146 Hamburg, Germany phone/fax: (+49)40-42838-3471/-3465. lemcke@chemie.uni-hamburg.de.
2 Center of Bioinformatics, University of Hamburg, Bundesstr. 43, 20146 Hamburg, Germany.
3 Current address: Institut für Pharmazeutische Chemie, Technische Universität Braunschweig, Beethovenstr. 55, 38106 Braunschweig, Germany.
4 ProQinase GmbH, Breisacher Str. 117, 79106 Freiburg, Germany.