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Transparent-surface renderings of θ showing exposed hydrophobic residues. Residues Gly, Ala, Val, Ile, Leu, Phe, Tyr, Trp, and Pro are orange, and all other types are blue. Panels a and b are rotated approximately 180 ° about the axis indicated by the black arrow. Disordered residues 1 to 7 and 66 to 76 are not shown.
