1 33 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 GGGCGCCGGU ACGCAAGUAC GACGGUACGC UCC LOOP1 13 16 Crystallography ? ? Angstroms 1 G O3' 73.997 -5.373 21.181 2 G P 72.832 -5.645 20.131 O3' 73.732 -5.259 14.938 3 G P 72.644 -6.057 14.077 O3' 73.555 -7.571 9.251 4 C P 72.008 -7.811 8.979 O3' 70.535 -11.939 6.511 5 G P 70.070 -12.508 5.127 O3' 67.109 -17.039 7.149 6 C P 65.517 -17.086 7.082 O3' 63.390 -17.813 12.356 7 C P 61.969 -18.047 13.026 O3' 60.634 -16.220 18.460 8 G P 59.172 -16.659 18.918 O3' 58.028 -13.507 23.500 9 G P 56.499 -13.447 23.957 O3' 53.977 -8.025 23.259 10 U P 52.530 -7.482 23.638 O3' 49.144 -5.575 20.105 11 A P 47.728 -6.298 19.896 O3' 45.102 -5.524 15.256 12 C P 43.727 -6.053 15.849 O3' 41.459 -10.002 13.497 13 G P 40.545 -10.550 14.674 O3' 39.966 -15.746 15.382 14 C P 39.111 -15.614 16.721 O3' 42.328 -18.195 20.326 15 A P 42.423 -18.435 21.895 O3' 47.361 -21.324 21.844 16 A P 48.722 -20.989 22.574 O3' 52.696 -21.441 18.094 17 G P 53.679 -20.625 17.115 O3' 53.247 -20.411 11.089 18 U P 54.400 -19.652 10.302 O3' 53.243 -16.361 6.292 19 A P 54.299 -15.201 5.987 O3' 52.804 -9.613 5.562 20 C P 52.715 -8.069 5.210 O3' 55.479 -4.644 7.719 21 G P 56.924 -4.520 7.000 O3' 58.151 -0.683 11.459 22 A P 56.972 0.272 11.879 O3' 54.307 1.625 15.141 23 C P 55.194 2.887 15.558 O3' 60.245 1.724 19.222 24 G P 60.261 1.161 20.702 O3' 65.595 -1.441 21.085 25 G P 67.073 -1.822 20.576 O3' 68.189 -7.602 22.592 26 U P 69.277 -8.370 23.465 O3' 72.777 -12.287 20.064 27 A P 73.694 -13.048 21.096 O3' 70.880 -16.659 24.091 28 C P 71.239 -18.193 23.808 O3' 70.842 -22.052 20.929 29 G P 72.334 -22.300 20.407 O3' 74.042 -24.118 16.108 30 C P 75.579 -23.969 16.477 O3' 79.539 -21.577 12.791 31 U P 80.882 -21.114 13.499 O3' 83.819 -17.055 11.877 32 C P 85.080 -17.196 12.833 O3' 87.584 -12.942 14.625 33 C P 88.616 -13.898 15.372 O3' 87.058 -14.963 20.896 15 syn 1 32 + + c 2 31 W W c 3 30 + + c 4 29 + + c 5 28 + + c 6 25 + + c 7 24 W W c 8 23 + + c 9 20 + + c 9 22 S H t 10 19 - - c 11 18 - - c 12 17 + + c 4 26 ! ! ! 6 27 ! ! ! 20 23 ! ! ! 25 27 ! ! ! 26 28 ! ! ! 13 16 ! ! ! 1 32 5 6 25 3 9 20 4 SG1 13 16 SG2 21 22 SG3 26 27 SG4 33 33 1 4.227 18.754 2 4.227 50.010 3 4.227 81.266 4 4.227 112.522 5 4.227 143.778 6 4.227 237.547 7 4.227 268.803 8 4.227 300.059 9 4.227 393.828 10 4.227 425.084 11 4.227 456.340 12 4.227 487.596 13 0.000 523.197 14 23.809 550.000 15 59.660 550.000 16 83.469 523.197 17 79.242 487.596 18 79.242 456.340 19 79.242 425.084 20 79.242 393.828 21 79.242 362.572 22 79.242 331.316 23 79.242 300.059 24 79.242 268.803 25 79.242 237.547 26 79.242 206.291 27 79.242 175.035 28 79.242 143.778 29 79.242 112.522 30 79.242 81.266 31 79.242 50.010 32 79.242 18.754 33 79.242 0.000