Figure. 1.

Dihedral Angle Distributions. Histograms of dihedral angle populations are shown for Dynameomics, Inclusive PDB, and Filtered PDB datasets for 18 amino acids. Populations for trimeric χ-angles and χ-angles before aromatic rings correspond well between data sets. Asn, Asp, Gln, and Glu terminal χ-angles differed strongly between Filtered PDB and Dynameomics, with Inclusive PDB bridging the gap. Pro is approximated in our force field by a single peak bifurcating the puckered states. Several residues show more subtle shifts in modal location and areas under each minima. χ1: black; χ2: red; χ3: green; χ4: blue.