Fig. 3: Structural dynamics of the OEC during S1–S2–S3 transitions.
From: Oxygen-evolving photosystem II structures during S1–S2–S3 transitions
a,b, Structures of PSII in the OEC area are superposed with Fobs(1F) – Fobs(Dark) (a) and Fobs(2F) – Fobs(1F) (b) difference density maps contoured at +4.0σ (green) and −4.0σ (orange), with delay times from 20 ns to 5 ms. Residues of CP43 (a subunit of PSII) are shown in magenta and encircled by rectangles. The oxo-oxygen in the OEC and ligand waters are linked to the metal ions by black solid lines. The colour scheme used for other residues and atoms is the same as in Figs. 1 and 2.
