1. Department of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK
2. Sanofi R&D, TSU Infectious Diseases, 1541 Avenue Marcel Mérieux, 69280 Marcy L’Etoile, France
3. Antibacterial Discovery Performance Unit, Infectious Diseases Therapy Area Unit, GlaxoSmithKline, 1250 Collegeville Road, Collegeville, PA 19426, USA
4. Platform Technology and Science, GlaxoSmithKline, Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, UK