Hemoglobin

(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-138   LYS-139  38.5 38.9 50.1 -35.9 93.0 84.9 -79.1
 LYS-139   TYR-140  39.8 40.0 -27.1 20.7 91.5 85.9 -141.9
 TYR-140   ARG-141  36.7 36.8 108.0 -58.6 128.6 125.3 -583.4
 ARG-141   GLY-142  37.1 38.3 -62.5 -134.8 49.5 79.7 -423.2
 VAL-143   LEU-144  43.4 43.4 68.2 13.2 125.8 118.5 -711.7
 LEU-144   SER-145  44.2 44.3 18.7 -4.0 75.2 74.4 -2.8
 SER-145   PRO-146  46.8 46.9 10.6 -13.8 142.9 146.6 -22.1

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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