Nature Reviews Molecular Cell Biology 5, 971–982 (2004); 10.1038/nrm1525

The authors wish to correct an error in Figure 2b. The schematic electron transport pathway depicted in this figure is incorrect. A corrected version of the pathway is shown below. The online versions of this article have been corrected. Figure 2

Figure 2: The structure of photosystem II and the cofactors that are involved in light-induced water oxidation and plastoquinone reduction.
figure 1

a | A view of the photosystem II (PSII) dimer perpendicular to the membrane normal. The coordinates of protein residues, chlorophylls and cofactors were taken from the Protein Data Bank file 1S5L (Ref. 24). The D1 and D2 subunits are shown as dark-blue ribbon structures, CP43 and CP47 as purple ribbon structures, the cytochrome-b559 subunits as light-blue ribbon structures, and extrinsic subunits as both orange and yellow ribbon structures. The remaining subunits are shown as light-pink ribbon structures. Chlorophylls are shown in a dark-green stick representation (with the central magnesium ions shown as yellow spheres). The oxygen-evolving complexes/manganese clusters are shown as light-blue spheres (manganese ions) and dark-pink spheres (calcium ions). Haem groups are shown in a red stick representation, and red spheres represent iron ions. Orange stick-like structures represent -carotene, and dark-pink stick-like structures represent the quinones. The axis of symmetry of the dimer is highlighted by a line. b | The cofactors that are involved in electron transport in PSII are shown in the same positions as in the left part of the PSII dimer in Fig. 2a. The arrows indicate the electron-transport pathway to the photooxidized P680 (two weakly coupled chlorophylls that function as the primary electron donor) and to the oxidized quinone. The colour scheme is the same as for part a, with the addition of pheophytins in light green, tyrosine 161 of D1 – Tyr(Yz) – in dark blue and bicarbonate ions in grey. The chlorophyll molecules are represented by symmetrical porphyrins.