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Figure 4
Reduction of oxidized O-quinone MADH/amicyanin crystals (TTQOX/Cu2+) by X-ray illumination. Spectra were recorded at 1 s intervals, but for clarity only the first 5 min of exposure (X-ray dose ≃ 9.3 × 105 Gy) and spectra recorded every 10 s are shown. Arrows indicate the direction of change for the main features; note that there is a transient increase at ∼428 nm as the TTQOSQ forms and then decays. The starting and ending spectra are shown in green and black, respectively; the orange spectrum shows maximum TTQOSQ content.

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