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Figure 3
Left: the X-ray structure of AcNiR (from Achromobacter cycloclastes), showing the number of H atoms visible (1649) in the electron density maps at 0.87 Å resolution. Right: the same X-ray structure of AcNiR but showing all 2700 expected H atoms in the structure; 61% of expected H atoms are observed in this 0.87 Å resolution X-ray structure.

IUCrJ
Volume 2| Part 4| June 2015| Pages 464-474
ISSN: 2052-2525
doi:10.1107/S2052252515011239