1 19 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 CCCAUGCGAG AGUAGGGAC Crystallography ? ? Angstroms 1 C O3' 29.066 30.322 -9.752 2 C P 28.062 29.495 -8.810 O3' 28.396 24.452 -8.771 3 C P 27.264 23.937 -7.762 O3' 27.634 19.717 -4.970 4 A P 26.315 19.707 -4.059 O3' 25.601 17.582 0.332 5 U P 24.086 18.055 0.582 O3' 22.428 19.418 5.141 6 G P 20.978 20.059 4.875 O3' 19.130 23.589 8.079 7 C P 17.871 24.483 7.667 O3' 16.451 29.502 7.920 8 G P 15.058 29.617 7.077 O3' 13.847 33.710 3.650 9 A P 12.284 33.364 3.390 O3' 11.735 38.129 1.880 10 G P 10.442 38.842 1.224 O3' 9.903 42.644 -1.955 11 A P 8.360 42.280 -2.243 O3' 6.389 42.250 -7.082 12 G P 4.865 41.895 -6.702 O3' 2.478 38.490 -9.984 13 U P 1.011 38.058 -9.469 O3' -1.138 33.648 -10.086 14 A P -2.588 33.903 -9.425 O3' -5.322 29.932 -7.675 15 G P -6.691 30.733 -7.394 O3' -9.004 30.516 -2.763 16 G P -10.178 31.612 -2.851 O3' -11.787 34.120 1.324 17 G P -12.988 35.091 0.871 O3' -14.129 39.606 2.998 18 A P -15.478 39.790 2.143 O3' -16.576 45.007 4.532 19 C P -16.090 46.527 4.723 O3' -14.933 49.592 1.774 SG1 17 19 1 75.862 18.966 2 75.862 50.575 3 75.862 82.184 4 75.862 113.793 5 75.862 145.402 6 75.862 177.011 7 75.862 208.621 8 75.862 240.230 9 75.862 271.839 10 75.862 303.448 11 75.862 335.057 12 75.862 366.667 13 75.862 398.276 14 75.862 429.885 15 75.862 461.494 16 75.862 493.103 17 75.862 512.069 18 75.862 531.034 19 75.862 550.000 1 19 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 U GCCGAUGGUA GUGUGGGG Crystallography ? ? Angstroms 1 U O3' 4.425 48.275 -2.653 2 G P 3.091 47.825 -3.430 O3' -2.521 49.011 -1.712 3 C P -2.482 47.436 -2.035 O3' -2.332 45.442 2.625 4 C P -1.090 44.430 2.542 O3' -0.759 40.058 5.317 5 G P 0.738 39.576 4.985 O3' 1.770 34.917 3.399 6 A P 3.334 34.786 3.066 O3' 4.157 29.718 2.868 7 U P 5.671 29.267 2.593 O3' 6.922 24.976 0.291 8 G P 8.493 25.299 0.212 O3' 11.024 24.058 -4.132 9 G P 12.510 24.630 -3.922 O3' 15.270 26.661 -7.784 10 U P 16.634 27.248 -7.161 O3' 18.940 31.475 -8.757 11 A P 20.240 31.467 -7.814 O3' 22.609 35.913 -6.675 12 G P 23.937 35.292 -6.024 O3' 25.654 37.230 -1.457 13 U P 26.937 36.351 -1.027 O3' 27.556 35.243 4.132 14 G P 28.888 34.441 4.547 O3' 30.166 32.231 8.833 15 U P 31.650 31.786 8.399 O3' 33.715 27.358 9.576 16 G P 35.082 27.574 8.764 O3' 37.523 23.914 6.312 17 G P 38.548 24.659 5.316 O3' 39.900 22.125 0.942 18 G P 40.915 23.067 0.130 O3' 41.201 22.674 -4.907 19 G P 42.481 23.627 -5.115 O3' 42.818 26.793 -9.057 2 syn SG1 1 2 SG2 19 19 1 0.000 531.034 2 0.000 512.069 3 0.000 493.103 4 0.000 461.494 5 0.000 429.885 6 0.000 398.276 7 0.000 366.667 8 0.000 335.057 9 0.000 303.448 10 0.000 271.839 11 0.000 240.230 12 0.000 208.621 13 0.000 177.011 14 0.000 145.402 15 0.000 113.793 16 0.000 82.184 17 0.000 50.575 18 0.000 18.966 19 0.000 0.000 1 18 + + c 2 17 + + c 3 16 + + c 4 15 - - c 5 14 W W c 6 13 W W c 7 12 + + c 8 11 S H t 9 10 H W t 12 7 W W t 13 6 W H t 14 5 H S t 15 4 + + c 16 3 + + c 10 9 ! ! ! 11 8 ! ! ! 1 18 16