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Comparison of helix bending between the computationally determined conformations of Pro (control, yellow) and TP in the g+ rotamer (red) polyAla α-helices; and the experimentally determined conformation of helix C of bacteriorhodopsin that contains TP91 in the g+ rotamer (orange), as observed in the PDB structure 1AP9. The side chains of Pro and Ser/Thr are shown.
