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
 THR-329   LEU-330  19.7 19.7 21.4 -20.8 70.6 69.6 -2.6
 LEU-330   ALA-331  16.1 16.1 10.4 -19.3 142.9 146.2 20.3
 ALA-331   PRO-332  13.0 13.1 21.6 -43.8 89.5 77.9 35.4
 PRO-332   ASN-333  12.2 11.6 -31.7 -155.1 121.9 102.2 211.7
 ASN-333   THR-334  11.2 8.4 -156.4 -23.1 80.0 149.0 -398.8
 THR-334   GLN-335  7.9 5.8 -27.1 -6.6 102.5 104.7 53.4
 GLN-335   THR-336  6.8 3.7 143.3 -0.4 37.3 83.6 667.2
 THR-336   ALA-337  5.6 7.3 29.9 -147.9 48.9 18.2 -393.0
 ALA-337   SER-338  8.7 6.9 50.9 -58.6 95.4 55.6 48.5
 SER-338   PRO-339  10.6 10.4 -39.3 1.8 155.4 157.1 -165.2

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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