1. Department of Genetics and Microbiology, University of Bari “Aldo Moro,” Bari, Italy
2. Institute for Biomedical Technologies, National Research Council (CNR), Section of Bari, Bari, Italy
3. Department of Biochemistry and Molecular Biology “E. Quagliariello,” University of Bari “Aldo Moro,” Bari, Italy