Intact Lactose Operon Repressor With Gratuitous Inducer Iptg

(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
 ALA-331   PRO-332  11.4 11.6 -2.2 5.9 84.3 86.3 49.3
 PRO-332   ASN-333  7.6 7.7 23.9 -5.0 164.0 160.3 -162.7
 ASN-333   THR-334  6.5 6.0 -47.5 37.4 66.8 65.2 118.9

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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