[1] CEA, CNRS, INST BIOL STRUCT JP EBEL, CRISTALLOG & CRISTALLOGENESE PROT LAB, F-38027 GRENOBLE 1, FRANCE
[2] CEA, CNRS, INST BIOL STRUCT JP EBEL, LAB DYNAM MOL, F-38027 GRENOBLE 1, FRANCE
[3] CNRS, UNITE BIOENERGET & INGN PROT, F-13042 MARSEILLE 20, FRANCE