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Figure 5
Disorder and hydrogen-bond patterns surrounding the His15 side chain. A representation is shown of the overall environment around His15 in D-­HEWLEC (a), D-HEWLPP (b) and H-HEWL (c). The 2Fo − Fc electron-density maps represented are contoured at 1σ. Highlighted hydrogen-bond interactions correlated with His15 side-chain disorder are shown for conformation A of D-HEWLEC (d), D-HEWLPP (e) and H-HEWL (f) and for conformation B of D-HEWLEC (g), D-HEWLPP (h) and H-HEWL (i).

IUCrJ
Volume 8| Part 3| May 2021| Pages 372-386
ISSN: 2052-2525
https://doi.org/10.1107/S2052252521001299