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Backbone dihedral angle distribution of residue 171 in the A) Susceptible (Gln171) and B) Resistant (Arg171) structure. The β2-α2 loop samples to a greater extent a 310-helix conformation in the Susceptible structure than in the Resistant structure. In the Resistant structure, the β2-α2 loop populates a turn conformation in addition to the310-helix conformation.
