Calmodulin

(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
 LYS-75   MET-76  10.9 9.6 22.2 80.2 80.9 48.8 35.2
 MET-76   LYS-77  8.0 8.6 -174.8 1.8 113.7 83.0 -25.8
 SER-81   GLU-82  4.6 5.4 -121.3 62.0 46.7 54.9 34.0
 GLU-82   GLU-83  7.9 8.3 -38.0 21.9 122.4 120.4 -0.6

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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