1 34 27 26 25 24 23 22 21 30 40 50 60 70 80 90 101 102 103 104 21 22 23 24 114 113 112 111 120 130 140 151 152 153 154 155 GGCGACCCUG AUGAGGCCGA AAGGCCGAAA CCGU LOOP1 20 21 Crystallography ? ? Angstroms 1 G P -13.413 70.256 30.811 O3' -8.900 69.525 32.410 2 G P -9.349 68.524 33.577 O3' -6.731 68.204 37.932 3 C P -7.406 67.079 38.848 O3' -7.728 67.301 43.885 4 G P -8.406 65.908 44.348 O3' -11.336 66.395 48.818 5 A P -12.276 65.197 49.291 O3' -16.359 66.262 52.299 6 C P -17.075 64.857 52.556 O3' -22.576 65.120 52.917 7 C P -23.298 63.680 52.941 O3' -28.091 63.263 50.696 8 C P -28.630 61.750 50.733 O3' -31.265 59.803 46.850 9 U P -31.672 58.368 47.453 O3' -32.164 54.264 44.215 10 G P -32.632 53.153 45.285 O3' -28.167 50.346 45.649 11 A P -27.246 51.618 45.940 O3' -22.682 52.399 43.021 12 U P -22.204 53.156 44.358 O3' -19.844 50.915 48.194 13 G P -18.428 51.648 48.310 O3' -14.212 48.475 50.690 14 A P -12.994 49.127 51.498 O3' -11.259 47.482 55.827 15 G P -9.823 48.087 55.515 O3' -5.790 44.797 54.652 16 G P -4.491 45.506 54.012 O3' -1.308 42.754 50.855 17 C P -0.004 43.503 50.277 O3' 2.445 42.930 45.866 18 C P 3.634 43.986 45.769 O3' 5.229 46.064 41.721 19 G P 6.323 47.071 42.326 O3' 7.355 51.664 40.764 20 A P 8.462 51.992 41.876 O3' 6.303 56.038 44.449 21 A P 4.795 55.521 44.576 O3' 1.415 59.615 43.399 22 A P -0.137 59.250 43.406 O3' -3.557 60.280 39.404 23 G P -4.790 59.496 40.040 O3' -6.126 55.239 36.828 24 G P -7.351 54.326 37.319 O3' -7.106 49.302 35.936 25 C P -8.365 48.494 36.514 O3' -7.757 43.470 37.525 26 C P -9.240 42.994 37.901 O3' -10.053 38.908 40.829 27 G P -11.631 38.858 41.124 O3' -13.584 38.263 45.749 28 A P -15.105 38.436 46.240 O3' -17.115 36.855 50.574 29 A P -18.655 36.960 50.119 O3' -22.104 39.663 52.790 30 A P -23.446 39.375 51.970 O3' -26.948 43.135 52.111 31 C P -28.166 42.716 51.164 O3' -30.658 45.774 48.093 32 C P -31.835 44.809 47.572 O3' -33.530 45.001 42.760 33 G P -34.434 43.687 42.589 O3' -34.785 41.258 37.885 34 U P -35.761 40.014 38.123 O3' -35.031 35.424 35.539 12 29 S W c 13 28 S H t 14 27 H S t 15 26 + + c 16 25 + + c 17 24 + + c 18 23 + + c 19 22 S H t 9 11 ! ! ! 9 12 ! ! ! 10 31 ! ! ! 12 29 8 SG1 9 11 SG2 20 21 1 394.292 80.702 2 370.240 110.443 3 346.187 140.184 4 322.135 169.925 5 298.082 199.666 6 274.029 229.407 7 249.977 259.148 8 225.924 288.889 9 211.492 306.733 10 197.061 324.578 11 182.629 342.422 12 91.800 320.500 13 91.800 282.250 14 91.800 244.001 15 91.800 205.751 16 91.800 167.501 17 91.800 129.251 18 91.800 91.001 19 91.800 52.751 20 73.773 0.000 21 18.027 0.000 22 0.000 52.751 23 0.000 91.001 24 0.000 129.251 25 0.000 167.501 26 0.000 205.751 27 0.000 244.001 28 0.000 282.250 29 0.000 320.500 30 0.000 397.000 31 0.000 435.250 32 0.000 473.500 33 0.000 511.750 34 0.000 550.000 1 13 165 164 163 162 161 170 11 12 13 14 15 16 17 acgguc ggucgcc 1 DA 2 DC 3 DG 4 DG 5 DT 6 DC 7 DG 8 DG 9 DT 10 DC 11 DG 12 DC 13 DC Crystallography ? ? Angstroms 1 a O3' -22.594 29.531 40.725 2 c P -21.670 30.828 40.535 O3' -22.028 33.621 36.225 3 g P -20.998 34.851 36.232 O3' -21.550 39.448 34.280 4 g P -20.306 40.316 34.776 O3' -21.063 45.306 35.243 5 u P -19.893 46.229 35.765 O3' -22.528 51.344 37.592 6 c P -22.129 52.851 37.173 O3' -25.568 56.282 36.172 7 g P -24.759 57.378 35.322 O3' -26.983 62.548 35.909 8 g P -26.223 63.926 35.608 O3' -27.121 68.141 38.699 9 u P -26.603 69.633 38.430 O3' -26.759 72.975 42.897 10 c P -26.251 74.503 42.978 O3' -23.040 76.583 46.100 11 g P -22.292 77.938 45.641 O3' -17.590 78.734 47.636 12 c P -16.546 79.871 47.214 O3' -10.935 79.361 46.649 13 c P -9.823 80.329 46.063 O3' -5.670 79.274 42.933 1 91.800 550.000 2 91.800 511.750 3 91.800 473.500 4 91.800 435.250 5 91.800 397.000 6 297.302 346.615 7 321.355 316.874 8 345.408 287.133 9 369.460 257.392 10 393.513 227.651 11 417.566 197.910 12 441.618 168.169 13 465.671 138.428 1 13 + + c 2 12 + + c 3 11 + + c 4 10 + + c 5 9 - - c 6 8 + + c 7 7 + + c 8 6 W W c 31 4 + + c 32 3 + + c 33 2 + + c 34 1 - - c 30 5 ! ! ! 11 5 ! ! ! 1 13 8 30 5 5