International School for Advanced Studies (SISSA), Trieste, Italy.|INSERM U1006, Aix-Marseille Université, Parc Scientifique et Technologique de Luminy, Marseille, France.|International School for Advanced Studies (SISSA), Trieste, Italy.|Structural Biology Laboratory, Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Trieste, Italy.|Structural Biology Laboratory, Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Trieste, Italy.|International School for Advanced Studies (SISSA), Trieste, Italy.|International School for Advanced Studies (SISSA), Trieste, Italy.