Brunger, A.T. [P:(DE-HGF)0] ; Adams, P.D. [P:(DE-HGF)0] ; Fromme, P. [P:(DE-HGF)0] ; Fromme, R. [P:(DE-HGF)0] ; Levitt, M. [P:(DE-HGF)0] ; Schröder, G.F. [P:(DE-Juel1)132018]