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. 2021 Dec 22;119(1):e2116765118. doi: 10.1073/pnas.2116765118

Fig. 5.

Fig. 5.

Structural differences near D1-Lys317. (A) Superposition of the Synechocystis 6803 (colored, PDB 7N8O) and T. vulcanus (gray, PDB 7D1T) PSII cryo-EM structures. Indicated distances are shown between the two structures in units of angstrom. (B) View 1 from a perspective near PsbO additionally showing the full-dose cryo-EM map. (C) View 2 from a perspective near D1-Asp61 additionally showing the full-dose cryo-EM map. In all panels, waters in the Synechocystis 6803 PSII structure that are in significantly different positions compared with waters in the T. vulcanus structure are denoted with red arrows. Maps are shown at 5σ. A magnified view near D2-Lys317 is shown in SI Appendix, Fig. S12 that highlights a possible alternate position of its sidechain.