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Figure 4
The type 2 Cu site of AcNIR with nitrite bound at 0.87 Å resolution. The catalytically important residue Asp98 is seen in multiple conformation with two distinct conformations visible. The 2Fo − Fc electron density map (in cyan) is contoured at the 1.5σ level and the Fo − Fc hydrogen omit map (in red) is contoured at the 2.0σ level.

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