Figure 1. GSDMDNT interacts tightly with anionic lipids.
Overlay of six representative PI(4,5)P2 bound poses of the prepore monomer (A) and the 33-mer GSDMDNT ring in pore conformation (B). GSDMDNT is shown in cartoon representation and colored using a rainbow spectrum from blue (N-terminus) to red (C-terminus). The β1–β2 loop is colored in cyan, the α1 helix in dark blue, the α3 helix in yellow, and the C-terminus in red. PI(4,5)P2 is shown in grey licorice representation with orange phosphorus and red oxygen atoms. Hydrogen atoms are not shown for clarity. The membrane and solvent are schematically shown with gray and blue shades, respectively. (C) Number of PI(4,5)P2 molecules that interact simultaneously with two subunits of the prepore (orange) and pore (blue) 33-mer rings. After 5 µs at 37°C, the pore simulation was continued for 1.5 µs at 70 °C (red).
Figure 1—figure supplement 1. Change in the number of inner leaflet lipids, whose headgroups interact with at least one heavy atom of the 33-mer pore, in absolute counts (top) and normalized by the number of lipids of each lipid species in the inner leaflet (bottom).
