Transcription Initiation Factor IIb

(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-1206   LYS-1207  1.6 2.1 -1.2 24.0 109.9 113.9 67.7
 LYS-1207   PRO-1208  2.2 2.9 -11.3 6.5 39.7 52.7 11.0
 PRO-1208   THR-1209  5.2 4.9 -15.8 21.9 71.7 62.3 5.3
 THR-1209   ASP-1210  7.1 7.6 -22.4 7.2 47.3 25.3 78.5
 ASP-1210   TYR-1211  5.2 6.2 -21.8 25.8 19.0 45.2 -14.9
 TYR-1211   VAL-1212  5.4 5.4 -20.9 -0.2 75.0 82.6 -18.4
 VAL-1212   ASN-1213  9.2 9.1 -6.4 1.1 43.3 45.5 28.9

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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