IgA Fab Fragment (J539)

(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
 GLU-105   ILE-106  6.4 6.5 11.1 -16.1 145.3 142.3 21.4
 ILE-106   LYS-106A  3.3 3.3 15.2 -18.0 104.1 106.8 -8.3
 LYS-106A   ARG-107  4.2 3.8 -28.9 32.4 81.6 81.1 42.1

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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