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
 VAL-285   GLY-286  15.5 15.5 3.2 -0.6 51.9 56.5 0.7
 GLY-286   LEU-287  12.0 12.0 0.3 -0.6 114.3 113.2 -2.2
 LEU-287   LEU-288  10.3 10.1 -6.1 8.3 43.2 45.7 10.6
 LEU-288   PHE-289  13.1 13.0 4.9 -6.5 103.0 104.9 6.8
 PHE-289   SER-290  12.7 12.8 -8.6 8.0 112.4 111.8 -7.5
 SER-290   GLY-291  15.1 15.1 -0.6 0.7 42.6 41.5 -0.1
 GLY-291   CYS-292  17.8 17.8 -0.1 -1.1 56.4 56.5 5.5

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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