The 3D NOESY digital resolutions, RMSD values, and <sup>13</sup>C- and <sup>15</sup>N-resolved NOESY CSSO indices, for three calculated protein structures of different molecular sizes, are listed.

<p>The linewidth corresponds to the <sup>1</sup>H indirect dimension. The CSSO indices where the calculated linewidth becomes larger at critical and all subsequent higher digital resolutions, are underlined.</p>