Institution: | 1.Institute for Biomedical Research, Birmingham University Medical School, Edgbaston, Birmingham, B15 2TT, UK, 2.LBPA (UMR 8113 du CNRS), Ecole Normale Superieur de Cachan, 61 Avenue du President Wilson, 94235 Cachan, France and 3.Department of Biochemistry, University of Bristol, University Walk, Bristol BS8 1TD, UK |