SAXS data from solutions of Rap guanine nucleotide exchange factor 3 (isoform3) bound to RAS related protein 1b - with cAMP - in 1mM EDTA, 10mM DTT, 500mM NaCl, 1mM cAMP, 10mM Tris, pH 9 were collected using a Rigaku BioSAXS-1000 instrument at the Sealy Center For Structural Biology, UTMB-G (Galveston, TX, USA) equipped with a Kratky-2D Rigaku BioSAXS-1000 detector at a sample-detector distance of 0.5 m and at a wavelength of λ = 0.15418 nm (I(s) vs s, where s = 4πsin θ/λ and 2θ is the scattering angle). Solute concentrations ranging between 1 and 4 mg/ml were measured at 10°C. SAXS data were acquired from 5 successive 1800 second frames. The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted and the different curves were scaled for protein concentration to generate the data displayed for this entry.
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