[1] Department of Biochemical Sciences "A. Rossi Fanelli" and CNR Center of Molecular Biology,
[2] University of Rome "La Sapienza",undefined
[3] Piazzale Aldo Moro 5,undefined
[4] 00185 Rome,undefined
[5] Rome,undefined
[6] Italy,undefined
[7] e-mail: marcocci@caspur.it,undefined
[8] Department of Biological Chemistry and CNR Center for the Study of Biomembranes,undefined
[9] University of Padua,undefined
[10] Padua,undefined
[11] Italy ,undefined