Affiliation: | 1. Institut de Biologia Molecular de Barcelona‐CSIC and Institut de Recerca Biomèdica, Parc Científic de Barcelona, Josep Samitier 1–5, 08028 Barcelona, Spain, Fax: (+34)?93‐403‐4979;2. Institut de Biologia Molecular de Barcelona‐CSIC, Jordi Girona 18, 08034 Barcelona, Spain;3. Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, Diagonal 647, 08028 Barcelona, Spain;4. Department of Chemistry, University of Warwick, Coventry, CV4?7AL, UK;5. School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15?2TT, UK, Fax: (+44)?121‐414‐7871 |