1. Department of Chemistry “G. Ciamician”, University of Bologna, and National Consortium of Materials Science and Technology (INSTM, UdR Bologna), via Selmi 2, 40126 Bologna, Italy, and ISOF-C.N.R., c/o Department of Chemistry “G. Ciamician”, via Selmi 2, 40126 Bologna, Italy
2. NSF-I/UCRC Center for Biocatalysis and Bioprocessing of Macromolecules, Department of Chemical and Biological Sciences, Polytechnic University, Six Metrotech Center, Brooklyn, New York 11201