1. Department
of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
2. Institute
for Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej
3, DK-2200 Copenhagen N, Denmark
3. Carlsberg
Laboratory, Gamle Carlsberg
Vej 10, DK-1799 Copenhagen V, Denmark
4. Department
of Laboratory Medicine, Yale University School of Medicine, P.O. Box 208035, 333 Cedar Street, New Haven, Connecticut 06520-8035, United States