Ensembles of ten lowest energy structures of GB1 computed with CST restraints: (a) using distances and CST data and variable poffset and pscale; (b) using distances, CST, TALOS, and VEAN restraints and variable poffset and pscale; (c) using distances and CST with pscale and poffset fixed to values from the lowest energy structure in (b). The coloring is according to secondary structure (helix in purple, strands in yellow, turns in cyan, and coils in grey).