1. York Structural Biology Laboratory, Department of Chemistry, University of York, York, YO10 5DD, United Kingdom
2. Department of Biochemistry & Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana 46202, United States
3. ENSCO, Inc., 4849 North Wickham Road, Melbourne, Florida 32940, United States
4. Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield, S10 2TN, United Kingdom
5. Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF10 3AT, United Kingdom