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Table 1 Rotamers from hydrogen-bonded hydrogen atoms fitted from electron density in high-resolution structures.

From: Identification of new, well-populated amino-acid sidechain rotamers involving hydroxyl-hydrogen atoms and sulfhydryl-hydrogen atoms

Type of χ Angle Rotamer Population
Ser χ2: 37 counts -79 ± 18° 27%
  69 ± 24° 30%
  189 ± 16° 43%
Thr χ2: 60 counts -74 ± 26° 47%
  80 ± 18° 35%
  176 ± 35° 18%
Tyr χ3: 39 counts 5 ± 9° 49%
  174 ± 12° 51%