The proposals covers a broad range of structural biology projects related to pathogen biology, host-pathogen interactions, RNA biology and structure-based drug development that are carried out by PIs at EMBL Grenoble, IBS-CIBB and IAB. The proposers have long-standing experience in the use, as well as the development of beam lines for macromolecular crystallography and have participated in successive BAG applications over the years, mostly at the ESRF but also at other synchrotrons (e.g. Soleil, Petra III, Diamond, SLS).