1. Department
of Chemistry, South
Kensington Campus, Imperial College, London
SW7 2AZ, U.K.
2. Department
of Chemistry, University of Reading, Reading
RG6 6A, U.K.
3. King’s College London, The Randall Division of Cell & Molecular Biophysics, New Hunt’s House, Guy’s Hospital Campus, London SE1 1UL, U.K.
4. Krebs
Institute for Biomolecular
Research, Department of Molecular Biology and Biotechnology, University of Sheffield, Western Bank, Sheffield S10
2UH, U.K.