The ABC toxin complex from Yersinia entomophaga can package three different cytotoxic components expressed from distinct genetic loci in an unfolded state: the structures of both shell and cargo. - Busby JN; Trevelyan S; Pegg CL; Kerr ED; Schulz BL; Chassagnon I; Landsberg MJ; Weston MK; Hurst MRH; Lott JS (IUCrJ, 2024)