1. Centre for Analytical Bioscience, Advanced Materials and Healthcare Technologies Division, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, U.K.
2. Biodiscovery Institute, School of Chemistry, University of Nottingham, Nottingham NG7 2RD, U.K.
3. Clostridia Research Group, BBSRC/EPSCR Synthetic Biology Research Centre (SBRC), Biodiscovery Institute, School of Life Sciences, University of Nottingham, Nottingham NG7 2RD, U.K.