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![[Figure 1]](rr5260fig1mag.jpg)
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Figure 1
2Fo − Fc maps with the occupancies of the OEC and surrounding residues set to 0. The 2Fo − Fc maps for the 0F (PDB entry 6jlj), 1F (PDB entry 6jlk) and 2F (PDB entry 6jll) datasets are shown in magenta and contoured at 1.0σ, 1.5σ and 2.0σ, respectively, overlaid with their corresponding structural models. The S2-state model from the 1F dataset and the S3-state model from the 2F dataset are displayed as solid sticks and spheres, while the dark S1-state model in 1F and the S2-state model in 2F are shown as transparent sticks and spheres for comparison. Within the OEC, manganese ions are colored gray, calcium ions blue and O1–O5 in the S1 and S2 states are rendered in red. In the S3 state, O5 and O6 are represented as cyan spheres. Red dashed circles indicate the position of O6 absent in the 0F and 1F datasets. |
![[Figure 1]](rr5260fig1.jpg)
 | STRUCTURAL BIOLOGY |
ISSN: 2059-7983
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