DNA Helicase

(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
 SER-284   VAL-285  6.7 6.0 6.1 41.1 84.3 80.4 22.5
 VAL-285   GLY-286  5.2 4.8 20.1 -21.3 11.6 2.6 -2.2
 GLY-286   LEU-287  4.3 3.8 -5.0 0.0 106.8 115.0 -8.3

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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