1. Institute of Materials Science, University of Connecticut, 97 North Eagleville Road, Storrs, CT 06269, USA
2. Alpha-O Peptides AG, Lörracherstrasse 50, 4125 Riehen, Switzerland
3. Department of Molecular and Cell Biology, Institute of Materials Science, University of Connecticut, 97 North Eagleville Road, Storrs, CT 06269, USA