Lac Repressor

(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-59   GLN-60  9.6 9.4 2.3 -2.4 30.3 30.4 -2.2
 GLN-60   SER-61  11.1 10.8 5.5 -3.6 94.8 95.8 -27.4
 SER-61   LEU-62  10.1 10.0 24.7 -19.1 24.9 28.6 81.3
 LEU-62   LEU-63  10.9 10.9 -1.9 -2.2 88.1 88.1 10.7
 LEU-63   ILE-64  8.6 8.6 3.4 -4.7 22.7 21.9 -9.3

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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