Figure 2From: Identification of new, well-populated amino-acid sidechain rotamers involving hydroxyl-hydrogen atoms and sulfhydryl-hydrogen atomsExamples of the poor fits of the hydrogen positions to the 2F 0 -F c electron-density map (at 0.5σ contour level) in high-resolution X-ray structures. These conformations are refinement artifacts (A) Thr-A41 [1C75] at χ2 = -120°, (B) Thr-A104 [1JM1] at χ2 = 0°; and (C) Tyr-A3 [1RW1] at χ3 = 60°.Back to article page