1. Department of Bioorganic Chemistry
2. Faculty of Chemistry
3. Wroclaw University of Technology
4. 50-370 Wroclaw
5. Poland
6. Department of Biochemistry and Molecular and Structural Biology
7. Jožef Stefan Institute
8. SI-1000 Ljubljana
9. Slovenia
10. Sanford Burnham Prebys Medical Discovery Institute
11. La Jolla
12. USA