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Figure 2
The [4Fe–4S] clusters in the 7.23 keV low-dose SFX dataset. The 2mFobs − DFcalc (blue, 1.0σ) and Fobs − DFcalc (green, 2.5σ) maps were calculated after ten cycles of restrained refinement in Refmac5. The coordinates of the [4Fe–4S] clusters were removed from the model prior to refinement. The [4Fe–4S] clusters are superposed as a reference for the original positions of Fe and S atoms in the clusters. The width of the electron density reflects the lower resolution compared with the data shown in Figs. 1[link] and 3[link].

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 22| Part 2| February 2015| Pages 225-238
doi:10.1107/S1600577515002349
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