1. Centre for Synthesis and Chemical Biology and School of Biomolecular and Biomedical Science, University College Dublin, Ireland
2. Departments of Molecular Biology and Biochemistry, Pharmaceutical Sciences and Chemistry, University of California, Irvine, California, USA
3. Centre for Synthesis and Chemical Biology and School of Chemistry, University College Dublin, Ireland
4. Faculty of Medicine, Health and Life Science, Institute of Life Science, Swansea University, Singleton Park, Swansea, SA2 8PP, UK