List of the atom dependencies and typical bond parameters in protein structures for side chains of the 20 standard amino acid types.
atomdeps
A list for the 20 amino acid types, each having the attributes
"tangle": Dihedral angle defined by atoms A-B-C-D as described below. NA
's represent the free side chain dihedral angles chi for that amino acid.
"names": The component atoms of the amino acid side chain. Represents atom D in the dihedral.
"matx": The names of atoms A,B,C in the dihedral, with rows corresponding to the atoms in "names".
"bangle": Planar bond angle formed between B-C-D
"blength": Bond length between C-D
Engh, Richard A., and Robert Huber. "Accurate bond and angle parameters for X-ray protein structure refinement." Acta Crystallographica Section A 47.4 (1991): 392-400.