1. Structural Genomics Consortium, Nuffield Department of Medicine, University of Oxford, Oxford OX3 7DQ, U.K.
2. Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford OX3 7FZ, U.K.
3. Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London W12 0BZ, U.K.
4. Pole of Pharmacology and Therapeutics (FATH), Institut de Recherche Expérimentale et Clinique (IREC), UCLouvain, 57 Avenue Hippocrate B1.57.04, Brussels B-1200, Belgium
5. Institute of Condensed Matter and Nanosciences, MOST Division, Place Louis Pasteur, UCLouvain, Louvain-la-Neuve B-1348, Belgium