1 23 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 CUUGCUGAAG CGCGCACGGC AAG Crystallography ? ? Angstroms 1 C O3' 11.156 -19.690 -0.270 2 U P 10.000 -18.557 -0.276 O3' 7.472 -16.646 -4.690 3 U P 6.026 -15.898 -4.616 O3' 2.135 -16.078 -8.167 4 G P 0.796 -15.174 -7.995 O3' -4.070 -16.800 -8.565 5 C P -5.312 -15.900 -8.062 O3' -9.433 -17.237 -5.366 6 U P -10.236 -16.072 -4.592 O3' -11.623 -15.072 -0.293 7 G P -11.555 -13.565 0.290 O3' -12.876 -12.782 5.854 8 A P -13.253 -11.417 6.614 O3' -9.435 -7.271 8.746 9 A P -8.763 -5.829 8.953 O3' -3.923 -5.477 11.619 10 G P -2.738 -6.340 12.301 O3' 0.433 -1.729 10.987 11 C P 1.664 -1.597 12.033 O3' 6.046 0.299 10.601 12 G P 6.254 1.840 10.157 O3' 9.707 3.441 6.474 13 C P 9.665 4.825 5.630 O3' 11.535 6.530 1.444 14 G P 11.114 8.036 1.032 O3' 10.002 10.050 -3.484 15 C P 9.101 11.381 -3.730 O3' 5.824 12.241 -7.835 16 A P 4.726 13.423 -7.759 O3' -0.284 12.400 -9.652 17 C P 0.093 13.272 -10.974 O3' -2.906 15.721 -11.097 18 G P -2.698 17.309 -10.817 O3' -6.974 20.457 -9.369 19 G P -6.983 22.052 -9.107 O3' -8.917 25.165 -5.417 20 C P -8.297 26.634 -5.085 O3' -7.565 29.382 -0.642 21 A P -6.512 30.619 -0.602 O3' -3.162 31.911 3.040 22 A P -2.047 33.063 2.792 O3' 2.858 33.042 4.653 23 G P 3.974 34.075 4.073 O3' 9.350 31.510 3.078 6 7 ! ! ! SG1 8 9 1 184.782 42.764 2 166.963 61.110 3 149.145 79.455 4 131.326 97.801 5 113.508 116.146 6 95.690 134.492 7 77.871 152.838 8 67.180 163.845 9 56.489 174.852 10 61.379 191.957 11 61.379 217.531 12 61.379 243.106 13 61.379 268.680 14 61.379 294.255 15 61.379 319.829 16 61.379 370.978 17 61.379 396.553 18 61.379 422.127 19 61.379 447.702 20 61.379 473.276 21 61.379 498.851 22 61.379 524.425 23 61.379 550.000 1 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 CUUGCUG AAGCGCGCAC GGCAAG Crystallography ? ? Angstroms 1 C O3' 11.422 21.272 -5.822 2 U P 10.871 19.969 -5.017 O3' 10.496 19.749 0.381 3 U P 9.567 18.787 1.322 O3' 7.070 20.316 5.804 4 G P 5.949 19.500 6.639 O3' 1.674 21.032 8.897 5 C P 0.501 19.964 9.237 O3' -4.686 20.773 8.969 6 U P -5.675 19.495 9.083 O3' -8.959 17.365 6.276 7 G P -9.072 15.763 6.096 O3' -12.512 14.111 1.708 8 A P -13.206 12.692 1.395 O3' -11.355 8.035 -2.158 9 A P -11.658 8.297 -3.724 O3' -8.075 5.559 -6.427 10 G P -9.004 4.310 -6.822 O3' -4.828 0.221 -6.980 11 C P -4.464 -0.055 -8.543 O3' -0.272 -2.476 -9.501 12 G P -0.010 -3.981 -8.970 O3' 4.626 -6.017 -7.751 13 C P 4.901 -7.409 -6.962 O3' 8.347 -9.542 -4.540 14 G P 7.843 -11.040 -4.244 O3' 8.104 -13.597 0.304 15 C P 7.303 -14.860 0.958 O3' 6.748 -15.883 6.402 16 A P 5.487 -16.687 7.017 O3' 2.374 -15.108 10.724 17 C P 3.293 -15.159 12.082 O3' 1.061 -18.267 12.448 18 G P 1.356 -19.749 11.853 O3' -2.616 -23.984 10.591 19 G P -2.741 -25.383 9.795 O3' -6.238 -27.265 6.360 20 C P -5.975 -28.420 5.235 O3' -7.597 -29.159 0.255 21 A P -6.719 -30.093 -0.740 O3' -5.458 -29.446 -5.686 22 A P -4.323 -30.377 -6.377 O3' -0.801 -29.077 -9.882 23 G P 0.419 -30.107 -10.182 O3' 5.724 -27.371 -10.943 1 syn 6 7 ! ! ! SG1 9 9 SG2 16 16 1 0.000 550.000 2 0.000 524.425 3 0.000 498.851 4 0.000 473.276 5 0.000 447.702 6 0.000 422.127 7 0.000 396.553 8 0.000 370.978 9 0.000 345.404 10 0.000 319.829 11 0.000 294.255 12 0.000 268.680 13 0.000 243.106 14 0.000 217.531 15 0.000 191.957 16 23.151 121.081 17 33.842 110.073 18 51.660 91.728 19 69.479 73.382 20 87.297 55.037 21 105.116 36.691 22 122.934 18.346 23 140.752 0.000 1 23 W W c 2 22 - - c 3 21 - - c 4 20 + + c 5 19 + + c 6 18 W W c 7 17 W W c 9 15 W W c 10 15 + + c 11 14 + + c 12 13 W W c 13 12 + + c 14 11 + + c 15 10 + + c 16 8 W W c 17 7 + + c 18 6 W W c 19 5 + + c 20 4 + + c 21 3 - - c 22 2 - - c 23 1 W W c 1 23 7 10 15 6 16 8 8