1. Institute of Chemical Biology, National Hellenic Research Foundation, Athens 11635, Greece
2. Department of Biochemistry and Biotechnology, University of Thessaly, Viopolis, Larisa 41500, Greece
3. Biomedical Sciences Research Complex, School of Biology, University of St Andrews, St Andrews KY169ST, United Kingdom
4. Astbury Centre for Structural Molecular Biology, School of Biomedical Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom