Fig. 1: Structure of the PorKN ring.
From: Insights into type IX secretion from PorKN cogwheel structure bound to PorG and attachment complexes
A Cartoon representation of the T9SS architecture showing the location of PorKN rings and PorG, PorLM motor, and the Sov translocon bound to PorV and PorW. B A bottom view of 33-fold symmetry cryo-EM volume of the PorKN ring (Pink: PorK, Blue: PorN). C Side views of the PorKN ring showing the flat upper surface and an outer rim formed by PorK with cog-like projections formed by PorN. D Top-view of the PorKN ring. E Enlarged views of the outer surface of the PorKN ring showing the fitting of PorK (pink) and PorN (blue) and interlock of PorK subunits. F Ribbon fold structures of PorK (pink) and PorN (blue), outer and side views showing the glycans on PorK. G Inner ring cross section showing the interface of PorN with the cavity formed by two PorK subunits. PorK (purple and pink) surface rendered. PorN (blue) in surface rendered and ribbon representation. H Detailed structure of the two glycans on PorK.
