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Circular dichroism spectroscopy of the wild-type SloR protein. The double minima occurring at 220 nm and 210 nm are characteristic of alpha-helical regions, while the relatively low amplitude of the maxima and minima is characteristic of beta-sheet regions. The spectrum is reported in delta epsilons, or per-residue molar absorption units. SloR ≈ 1 mg/ml buffer (5 mM HEPES [pH 7], 100 mM NaF, 10% [vol/vol] glycerol); temperature, 25°C; path length, 0.1 mm.
