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Figure 3
SF-ROX damage-free structure of nitrite reductase from A. xylosoxidans reveals a dioxygen species at the catalytic copper site. The OMIT Fo − Fc electron-density map is contoured at the 5σ level around the dioxygen molecule and is coloured green.

IUCrJ
Volume 6| Part 2| March 2019| Pages 167-177
ISSN: 2052-2525
https://doi.org/10.1107/S2052252519002422