[1] CEA IBITECS, Lab Biol Struct & Radiobiol, Gif Sur Yvette, France
[2] Univ Paris South, CNRS, UMR 8221, Gif Sur Yvette, France
[3] CNRS, Ctr Rech Gif, Lab Enzymol & Biochim Struct, Gif Sur Yvette, France
[4] Univ Paris 07, CNRS, Inst Biol Fonct & Adaptat, Lab Stress & Pathol Cytosquelette, Paris, France
[5] CEA Saclay, LBSR, F-91191 Gif Sur Yvette, France