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. 2023 Apr 24;120(18):e2303275120. doi: 10.1073/pnas.2303275120

Fig. 1.

Fig. 1.

The toga of T. maritima is formed by extended protein arrays and small lipid patches. (A) A 20-nm thick tomographic slice showing the cell envelope architecture of T. maritima. IM, red, a thin layer of PG, green, and the toga (purple). (B and C) View of the toga protein monolayer (purple arrows) and corresponding density profile. (D and E) View of the toga lipid bilayer (light blue arrows) and corresponding density profile. (F) Top view of the toga showing extended protein arrays surrounding small lipid patches (blue dashed lines). 2D Fourier transform (Top Right) and subtomogram average (Bottom Right) reveal a hexagonal array of β-barrel trimers with 9.8 nm lattice spacing. (G) Numerous copies of Ompα (orange) span ~50 nm underneath the toga and connect the PG to the toga.