1. Department of Chemistry and Center for Integrated Protein Science
2. LMU Munich
3. Munich
4. Germany
5. Section of Cell Biology and Functional Genomics
6. Department of Medicine
7. Imperial College London
8. London W12 0NN
9. UK
10. Department of Clinical and Experimental Medicine
11. Islet Cell Laboratory
12. University of Pisa
13. Pisa
14. Italy