Institution: | From the ‡Institute of Molecular Cancer Research, University of Zurich and ;the ‖Department of Biology, Swiss Institute of Technology (ETH) Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland, and ;the Departments of §Chemistry and ;¶Pharmacological Sciences, Stony Brook University, Stony Brook, New York 11794-3400 |