X-ray synchrotron radiation scattering data from solutions of Suppressor of Copper Sensitivity C protein (ScsC) complexed with the alpha domain of the Suppressor of Copper Sensitivity B protein from Proteus mirabilis in 10 mM HEPES 100mM NaCl, pH 7.5 were collected on the SAXS/WAXS beam line of the Australian Synchrotron (Melbourne, Australia) using a 2D Photon counting Pilatus 1M-W pixel detector (s = 4π sin θ/λ, where 2θ is the scattering angle). Thirteen successive 1 second frames were collected across solute concentrations of 0.56-4.50 mg/ml. The SAXS data displayed this entry was derived from a 0.56 mg/ml sample. The data were normalized to the intensity of the transmitted beam and radially averaged and the scattering of the solvent-blank was subtracted. Small-angle neutron scattering data with contrast variation were also collected on the QUOKKA instrument at the Australian Nuclear Science and Technology Organisation at a solute concentration of ~5.0 mg/ml. A rigid-body model was co-refined against the SAXS and SANS data using using SASREF (v 7.d), and this model is shown, together with the X-ray data and correspond fit. Details of the SANS data collection, corresponding fits, and additional analysis are contained in a downloadable zip archive.