Synchrotron SAXS data from solutions of histone deacetylase 6 in 30 mM HEPES, 140 mM NaCl, 10 mM KCl, 0.25 mM TCEP, pH 7.4 were collected on the EMBL P12 beam line at PETRA III (Hamburg, Germany) using a Pilatus 6M detector at a sample-detector distance of 3 m and at a wavelength of λ = 0.124 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). In-line size-exclusion chromatography (SEC) SAS was employed. The SEC parameters were as follows: A 95.00 μl sample at 4.6 mg/ml was injected at a 0.60 ml/min flow rate onto a GE Superose 6 Increase 10/300 column at 20°C. 2400 successive 1 second frames were collected. The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted.
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