1. Protein Phosphorylation Laboratory, Cancer Research UK, London Research Institute, 44 Lincoln's Inn Fields, London, WC2A 3PX, UK
2. High-throughput Screening Laboratory, Cancer Research UK, London Research Institute, 44 Lincoln's Inn Fields, London, WC2A 3PX, UK
3. Division of Cancer Studies, King's College London, Guy's Hospital, London, SE1 1UL, UK