Nature of the ferryl heme in Compounds I and II.

VOLUME 286 (2011) PAGES 1260–1268

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The legend to Fig. 1 should read as follows.

FIGURE 1. Stereo images of the crystal structures of the ferryl heme intermediates of CcP and APX. A–E, CcP Compound I (A), APX Compound II (B), APX Compound III (ferrous-oxy) (C), APX Compound I (D), and CcP Compound II (E), showing electron density maps calculated with coefficients 2F_o − F_c (contoured at 2σ, shown in blue) and the F_o − F_c map (contoured at 4σ, shown in green) calculated after refinement omitting the oxygen. Oxygen atoms are shown as red spheres, the heme is in red, and the iron is shown as an orange sphere. Key residues are labeled.