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
 MET-72   ALA-73  24.5 24.0 40.7 -11.7 83.5 111.8 -3.4
 ALA-73   ARG-74  21.5 21.5 6.3 -16.5 14.7 32.0 -9.3
 ARG-74   LYS-75  22.1 20.8 -6.0 -45.5 118.9 119.5 -23.0
 LYS-75   MET-76  22.4 21.3 97.8 71.5 77.5 133.7 -53.4
 MET-76   LYS-77  18.8 19.5 26.8 7.6 137.3 74.2 146.7
 SER-81   GLU-82  11.0 11.0 51.9 -15.1 80.8 120.9 -11.9
 GLU-82   GLU-83  11.8 11.6 172.2 -43.7 151.4 160.0 231.0
 GLU-83   GLU-84  11.3 11.0 -9.2 -7.5 58.7 54.0 10.5

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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