Calmodulin Cmd-1

(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
 ASP-80   SER-81  14.4 14.6 125.9 -11.2 46.6 40.1 255.7
 SER-81   GLU-82  14.2 13.9 -5.4 17.2 80.3 79.0 -15.8
 GLU-82   GLU-83  11.6 11.5 -9.7 -0.9 106.8 107.2 -17.3

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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