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Table 1 Parameters of the CO···HX hydrogen bond

From: The Ramachandran plots of glycine and pre-proline

  n φ ψ O···H COH OHX dihCOHX
  γ region of the generic amino acid     
CO···HN 518 -85(3)° 81(11)° 2.39(0.24) Å 107(5)° 123(10)° 178(11)°
  ζ region of pre-proline: UP PUCKER     
CO···Hδ1Cδ 105 -129(6)° 80(6)° 3.64(0.27) Å 79(8)° 75(10)° 25(9)°
CO···Hδ2Cδ     2.59(0.22) Å 99(12)° 144(14)° -108(18)°
  ζ region of pre-proline: DOWN PUCKER     
CO···Hδ1Cδ 406 -129(6)° 74(9)° 3.16(0.38) Å 95(32)° 101(20)° 22(11)°
CO···Hδ2Cδ     2.98(0.36) Å 71(10)° 113(22)° -118(14)°