1. Imperial College Centre for Synthetic Biology, Imperial College London, London SW7 2AZ, United Kingdom
2. Department of Bioengineering, Imperial College London, London SW7 2AZ, United Kingdom
3. Department of Life Sciences, Imperial College London, London SW7 2AZ, United Kingdom
4. Section of Structural Biology, Department of Medicine, Imperial College London, London SW7 2AZ, United Kingdom
5. Department of Microbial Biotechnology, Centro Nacional de Biotecnología (CNB-CSIC), Darwin 3, Campus Cantoblanco UAM, 28049 Madrid, Spain
6. Department of Chemical Engineering, Imperial College London, London SW7 2AZ, United Kingdom