1. Science
for Life Laboratory, Department of Biochemistry and Biophysics and
Center for Biomembrane Research, Stockholm University, SE-106 91 Stockholm, Sweden
2. Molecular
Recognition Section, Laboratory of Bioorganic Chemistry, National
Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892, United States
3. Science
for Life Laboratory, Department of Medicinal Chemistry, BMC, Uppsala University, P.O.
Box 574, SE-751 23 Uppsala, Sweden