Figure 3
Electron density map of the mutant PSII crystal (a) and a difference Fourier map of wild-type-minus-mutant PSII (b) around the transmembrane helix and itsC-terminal loop of PsbTc. The electron density map (a) at a resolution of 3.8 Å is represented at 2.0σ. The difference Fourier map (b) is computed at a resolution of 6.0 Å and displayed at 2.0σ, where positive signals are represented by black mesh and negative signals are represented by a light-gray mesh. PsbTc is depicted by cartoon with side chain, and other subunits are depicted as ribbons. |