Synchrotron SAXS data from solutions of NAMPT in the presence of phosphoribosyl pyrophosphate in 20 mM Tris-HCl, 500 mM NaCl, 6 mM MgCl2, 5% (v/v) glycerol, 1 mM phosphoribosyl pyrophosphate, pH 8 were collected on the EMBL P12 beam line at PETRA III (DESY, 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). One solute concentration of 2.80 mg/ml was measured at 10°C. 40 successive 0.045 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.