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Figure 2
Determination of the oxygen saturation fraction of each subunit. (a) Electron densities superposed on the ligand sites of each subunit. The 2Fo − Fc maps (blue, contoured at 1.0σ) and the oxygen-omitted Fo − Fc maps (green, contoured at 2.5σ) are represented with stick models of the heme, oxygen, proximal histidine and distal histidine. (b) The residues to which the atoms subjected to the B-factor analysis belong are shown as stick models. (c) Transition of oxygen saturation in each subunit (vertical axis). The overall oxygen saturation of the crystals (horizontal axis) was determined as in Fig. 1[link].

IUCrJ
Volume 8| Part 6| November 2021| Pages 954-962
ISSN: 2052-2525
https://doi.org/10.1107/S2052252521009386