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Figure 12
2Fo − Fc electron (gray) and nuclear Fo − Fc OMIT (magenta) density maps of the DFPase active-site environment. W33 is clearly identified as a water molecule and not a hydroxide, and is situated in an orientation that maximizes hydrogen-bonding interactions. The Ca—O—D angle is 53°. Reprinted with permission from Blum et al. (2009BB9), Proc. Natl Acad. Sci. USA, 106, 713–718. Copyright (2009) National Academy of Sciences.

IUCrJ
Volume 4| Part 1| January 2017| Pages 72-86
ISSN: 2052-2525
https://doi.org/10.1107/S205225251601664X