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Consistent internal conformation of the ApPrxQ and StPrxQ β-hairpins. The overlaid β-hairpins of all five LU chains are shown: two from ApPrxQ-FF/LU (cyan), two from ApPrxQ-LU (violet), and one from StPrxQ (green). Residues are labeled and H-bonds (dashed lines) internal to the hairpin and to the carbonyl of residue 142 are shown. As modeled, the conformation is a type I-like turn with ϕ, ψ (Lys51) ≈ −70, −35 and ϕ, ψ (Glu52) ≈ −130, −30.
