Table 1 Parameters of the CO···HX hydrogen bond
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)° | |||