Synchrotron SAXS data from solutions of the His-RuvBl1/RuvBl2 dodecamer in 20 mM HEPES, 150 mM NaCl, 1% glycerol, 5 mM TCEP, pH 7.5 were collected using size-exclusion chromatography SAXS (SEC-SAXS) on the SWING beam line at SOLEIL (Saint-Aubin, France) using a Eiger 4M detector at a sample-detector distance of 2 m and at a wavelength of λ = 0.1033 nm (l(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). SEC-SAXS was performed at 15°C using the following parameters: Column: BioSEC5-500A (4.6 mm id * 300 mm); Flow rate: 0.3 mL/min; Sample injection concentration: 6 mg/mL; Injection volume: 50 μL. The data were collected through the SEC peak of the protein as a series of 17 x 1 second exposures. Each unsubtracted data frame was normalised to the intensity of the transmitted beam and radially averaged and the scattering of an appropriate solvent-blank was subtracted. The resulting subtracted frames were scaled and averaged to generate the final SAXS profile displayed in this entry.
The experimental molecular weight was determined from SEC-RALS/LALS experiment (670 kDa).
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