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  6.1 5.6 7.9 32.3 80.8 79.0 15.0
 VAL-285   GLY-286  4.6 4.3 9.4 -20.7 11.9 9.2 -23.5
 GLY-286   LEU-287  3.9 3.6 -1.9 7.3 110.7 117.2 8.6

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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