1. National Centre for Biological Sciences; Tata Institute of Fundamental Research, GKVK Campus; Bangalore 560065 India
2. INSERM UMR-S 665 Dynamique des Structures et Interactions des Macromolécules Biologiques (DSIMB); University Paris-Diderot, Institut National de Transfusion Sanguine, INTS; 75739 Paris cedex 15 France