Institution: | 1. Institute of Chemistry, University of Neuchatel, Av. Bellevaux 51, CP 158, 2009 Neuchatel, Switzerland, Fax: (+41)?32‐718‐2511;2. Departments of Biological Structure and Biochemistry and the Biomolecular Structure Center, University of Washington, Box 357420 Seattle, WA 98195‐7420, USA, Fax:(+1)?206‐543‐1524;3. Corresponding authors: Prof. Stenkamp for the X‐ray structure, Prof. Ward for all other matters. |