Ribonuclease A

(All numbering and residues are taken from first PDB file)

Bending Residue Dihedral Analysis

Residue
i
Residue
i+1
Distance of hinge axis to residue i in conformer 1
(A)
Distance of hinge axis to residue i in conformer 2
(A)
Change in psi (i)
(deg)
Change in phi (i+1)
(deg)
Angle of psi(i) axis to hinge axis conformer 1
(deg)
Angle of psi(i) axis to hinge axis conformer 2
(deg)
Percentage Progress
 SER-21   SER-22  2.8 3.1 140.9 94.0 89.3 62.5 20.0
 SER-22   SER-23  1.5 1.3 172.6 7.0 53.6 55.2 73.7
 SER-23   ASN-24  4.9 4.6 -17.2 0.9 162.9 162.8 -7.7

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Graph shows rotational transition at bending residues and can be used to identify hinge bending residues.
Probably only informative for interdomain rotations greater than 20 degrees