1. Center for Integrative Proteomics Research and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA.
2. Laboratory of Molecular Bacteriology, Rega Institute, Department of Microbiology and Immunology, KU Leuven, Minderbroedersstraat 10, B-3000 Leuven, Belgium.
3. Institute of Molecular Biology and Biotechnology-FORTH and Department of Biology, University of Crete, P.O. Box 1385, GR-71110, Iraklio, Crete, Greece.