1. School of Biochemistry Biomedical Sciences Building University Walk University of Bristol Bristol BS8 1TD UK
2. Centre for Protolife Research School of Chemistry University of Bristol Bristol BS8 1TS UK
3. National Institute for Health Research Blood and Transplant Research Unit (NIHR BTRU) in Red Blood Cell Products University of Bristol Bristol BS34 7QH UK
4. Wolfson Bioimaging Facility Biomedical Sciences Building University Walk University of Bristol Bristol BS8 1TD UK
5. Max Planck Bristol Centre for Minimal Biology School of Chemistry University of Bristol Bristol BS8 1TS UK
6. School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai 200240 P. R. China