1 12 6 7 8 9 10 11 12 13 14 15 16 17 GACCGGAGUG UC Crystallography ? ? Angstroms 1 G O3' 56.877 76.405 -3.281 2 A P 56.088 76.158 -4.654 O3' 55.098 79.577 -8.410 3 C P 54.596 78.767 -9.711 O3' 56.009 80.171 -14.535 4 C P 55.465 79.111 -15.613 O3' 57.963 78.520 -20.083 5 G P 57.100 77.628 -21.107 O3' 58.488 72.854 -23.426 6 G P 57.420 73.314 -24.518 O3' 57.092 67.342 -24.911 7 A P 57.471 66.814 -26.384 O3' 59.076 61.018 -24.791 8 G P 59.965 60.588 -26.053 O3' 63.328 60.294 -22.509 9 U P 64.695 59.455 -22.319 O3' 66.640 60.202 -17.123 10 G P 68.189 59.795 -17.141 O3' 69.485 57.531 -12.213 11 U P 70.880 56.714 -12.149 O3' 71.356 51.825 -9.591 12 C P 72.398 50.622 -9.872 O3' 73.176 45.839 -9.270 SG1 5 7 1 453.357 141.206 2 416.465 181.474 3 379.572 221.742 4 342.680 262.010 5 320.544 286.171 6 298.409 310.332 7 276.273 334.492 8 0.000 218.451 9 0.000 163.838 10 0.000 109.226 11 0.000 54.613 12 0.000 0.000 1 15 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 GACGCAGA GAUGGUC Crystallography ? ? Angstroms 1 G O3' 60.576 42.064 -19.862 2 A P 59.192 42.515 -19.171 O3' 57.752 43.143 -13.703 3 C P 57.226 43.294 -12.168 O3' 57.408 46.988 -8.900 4 G P 57.345 47.913 -7.573 O3' 57.217 53.440 -6.935 5 C P 55.820 54.232 -7.153 O3' 56.088 59.399 -8.664 6 A P 54.616 59.938 -9.018 O3' 53.322 62.099 -13.858 7 G P 51.740 61.871 -13.832 O3' 48.173 64.709 -16.923 8 A P 46.816 64.443 -16.110 O3' 49.181 65.981 -11.182 9 G P 50.643 66.448 -10.827 O3' 55.476 66.759 -13.717 10 A P 56.799 67.566 -13.289 O3' 60.181 63.988 -11.623 11 U P 61.141 65.175 -11.073 O3' 66.241 63.986 -12.990 12 G P 67.051 65.294 -12.500 O3' 69.082 68.328 -15.794 13 G P 69.833 69.336 -14.779 O3' 69.618 74.701 -16.506 14 U P 70.509 75.514 -15.430 O3' 69.734 80.282 -14.870 15 C P 70.441 81.106 -13.699 O3' 68.243 85.119 -10.057 7 syn 6 7 ! ! ! 9 10 ! ! ! SG1 6 11 1 131.071 0.000 2 131.071 54.613 3 131.071 109.226 4 131.071 163.838 5 131.071 218.451 6 306.510 495.517 7 328.645 471.356 8 350.781 447.195 9 372.916 423.034 10 395.052 398.873 11 417.187 374.713 12 439.323 350.552 13 476.215 310.284 14 513.108 270.016 15 550.000 229.748 1 15 + + c 2 14 - - c 3 13 + + c 4 12 + + c 6 10 W H t 8 5 + + c 9 4 W W c 10 3 + + c 11 2 - - c 12 1 W W c 7 6 ! ! ! 8 10 ! ! ! 9 11 ! ! ! 1 15 4 8 5 5