Correlation coefficient between multipole and rmsd distances. Correlation coefficient of the multipole and rmsd-based distances (r) as a function of the level of detail of the multipole representation (highest multipole rank l
retained in the description). All different pairs of distances from the 31 protein set are included in the comparison. The rmsd distances used in this calculation were determined after the spatial superposition of structures. Only aligned residues are included in the calculation of distances.