1 27 843 844 845 846 847 848 849 850 851 852 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 AUGCUCAUGC ACUGCAUGAA UGCCCCU LOOP1 10 14 Crystallography ? ? Angstroms 1 A P 52.282 37.071 -0.128 O3' 47.179 37.458 2.008 2 U P 46.445 36.275 1.226 O3' 41.611 37.523 3.774 3 G P 41.713 39.020 4.332 O3' 42.729 41.785 -0.609 4 C P 42.873 40.834 -1.889 O3' 41.591 36.967 -4.938 5 U P 40.611 36.698 -6.153 O3' 39.933 32.227 -8.083 6 C P 38.927 32.679 -9.244 O3' 34.905 30.001 -10.528 7 A P 33.620 30.408 -11.396 O3' 27.969 29.644 -11.305 8 U P 27.610 30.515 -12.617 O3' 23.027 32.081 -12.151 9 G P 22.938 33.024 -13.451 O3' 20.493 38.048 -13.524 10 C P 20.826 38.478 -15.035 O3' 21.198 43.850 -16.702 11 A P 32.533 41.965 -22.054 O3' 35.335 40.019 -19.264 12 C P 34.664 39.023 -18.208 O3' 39.173 41.187 -14.551 13 U P 38.077 41.758 -13.529 O3' 36.891 45.725 -11.448 14 G P 36.309 45.470 -9.971 O3' 31.978 47.462 -6.926 15 C P 32.095 46.600 -5.556 O3' 27.226 45.760 -3.405 16 A P 27.795 44.990 -2.112 O3' 24.175 41.761 -0.773 17 U P 24.925 41.062 0.452 O3' 23.684 36.433 1.049 18 G P 24.367 35.240 1.887 O3' 25.701 30.506 1.930 19 A P 26.754 30.029 3.017 O3' 29.914 26.102 2.385 20 A P 30.755 26.175 3.735 O3' 35.054 22.853 4.111 21 U P 34.474 21.409 3.822 O3' 33.382 22.293 -1.799 22 G P 33.756 23.849 -1.890 O3' 39.514 23.729 -1.277 23 C P 40.177 22.295 -1.440 O3' 40.491 17.838 1.592 24 C P 41.923 17.391 1.057 O3' 42.110 12.439 0.065 25 C P 43.379 12.204 -0.880 O3' 44.030 8.741 -5.134 26 C P 45.577 9.157 -5.159 O3' 46.781 9.063 -10.459 27 U P 48.228 9.613 -10.857 O3' 48.860 10.317 -15.713 10 syn 11 syn 20 syn 2 20 W W t 4 22 + + c 5 19 - - c 6 18 + + c 7 17 - - c 8 16 - - c 9 15 + + c 5 19 5 SG1 1 4 SG2 10 14 SG3 20 23 1 230.042 391.072 2 230.042 401.908 3 230.042 412.744 4 230.042 423.580 5 230.042 434.416 6 230.042 452.476 7 230.042 470.536 8 230.042 488.596 9 230.042 506.656 10 235.339 525.469 11 226.598 542.950 12 208.370 550.000 13 190.141 542.950 14 181.401 525.469 15 186.698 506.656 16 186.698 488.596 17 186.698 470.536 18 186.698 452.476 19 186.698 434.416 20 186.698 423.580 21 186.698 412.744 22 186.698 401.908 23 186.698 391.072 24 59.236 77.986 25 68.292 62.361 26 77.349 46.736 27 86.405 31.111 1 9 873 874 875 876 877 878 879 880 881 AAG GGAUGC Crystallography ? ? Angstroms 1 A P 48.664 30.031 -9.385 O3' 46.973 28.141 -13.543 2 A P 45.505 27.575 -13.234 O3' 43.597 24.612 -16.820 3 G P 42.185 23.932 -16.563 O3' 39.921 19.194 -17.796 4 G P 38.513 19.235 -16.982 O3' 36.541 14.493 -16.238 5 G P 35.248 14.832 -15.352 O3' 33.394 11.250 -12.705 6 A P 32.073 11.369 -11.835 O3' 29.316 8.444 -8.531 7 U P 28.654 7.068 -9.100 O3' 33.515 6.569 -9.560 8 G P 34.674 6.673 -8.422 O3' 32.275 7.174 -2.880 9 C P 31.196 5.996 -2.839 O3' 33.317 1.861 -5.916 6 syn 7 8 ! ! ! 8 9 ! ! ! SG1 1 1 SG2 6 9 1 54.339 0.000 2 48.905 9.375 3 39.848 25.000 4 30.792 40.625 5 21.735 56.251 6 16.302 65.626 7 10.868 75.001 8 5.434 84.376 9 0.000 93.751 21 6 W W t 23 8 + + c 24 5 + + c 25 4 + + c 26 3 + + c 27 2 - - c 24 5 4