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. Author manuscript; available in PMC: 2013 Jun 19.
Published in final edited form as: Biochemistry. 2012 Jun 5;51(24):4968–4979. doi: 10.1021/bi300498c

Figure 4.

Figure 4

Structural changes induced by FAD reduction (stereographic views). (A) Electron density for the histidine loop region of oxidized TcUGM. The cage represents a simulated annealing σA-weighted Fo − Fc omit map contoured at 3 σ. (B) Electron density for the histidine loop region of reduced TcUGM. The cage represents a simulated annealing σA-weighted Fo − Fc omit map contoured at 3 σ. (C) Superposition of oxidized (yellow) and reduced (gray) TcUGM. Red and black dashes represent hydrogen bonds for oxidized and reduced TcUGM, respectively.