1 30 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 GGUGCGAAGG GCGUCGUCGC CCCGAGCGCC LOOP1 13 18 Crystallography ? ? Angstroms 1 G O3' -5.491 -17.430 -3.831 2 G P -5.372 -16.459 -2.554 O3' -5.083 -18.277 2.161 3 U P -4.925 -16.969 3.081 O3' -2.061 -17.006 7.305 4 G P -2.105 -15.514 7.896 O3' 2.086 -13.507 10.220 5 C P 1.776 -11.985 10.631 O3' 5.154 -7.923 8.961 6 G P 5.224 -6.334 8.720 O3' 6.953 -3.650 4.358 7 A P 8.530 -3.964 4.253 O3' 8.511 0.562 0.903 8 A P 8.020 2.000 0.378 O3' 5.181 2.939 -4.584 9 G P 4.305 4.120 -5.235 O3' 0.359 3.612 -8.455 10 G P 0.262 5.169 -8.839 O3' -4.981 6.874 -8.702 11 G P -5.109 8.480 -8.703 O3' -9.349 10.867 -6.572 12 C P -9.151 12.465 -6.533 O3' -11.314 15.248 -2.743 13 G P -11.038 16.810 -3.040 O3' -9.000 20.395 -2.619 14 U P -9.558 21.422 -1.503 O3' -6.043 24.092 0.947 15 C P -5.128 24.754 -0.205 O3' -0.113 24.216 -2.064 16 G P 1.032 24.104 -3.187 O3' 4.549 21.766 -2.931 17 U P 3.889 20.308 -2.773 O3' 3.591 17.041 2.349 18 C P 5.168 17.060 2.034 O3' 3.798 16.759 6.118 19 G P 3.697 15.183 5.754 O3' -1.328 14.248 7.830 20 C P -1.775 12.786 8.337 O3' -6.375 10.766 7.979 21 C P -6.151 9.178 8.106 O3' -9.367 5.939 5.718 22 C P -8.925 4.428 6.050 O3' -10.089 0.445 2.992 23 C P -11.234 -0.188 2.049 O3' -7.734 -3.869 -0.809 24 G P -6.959 -5.273 -0.681 O3' -1.512 -4.822 -3.441 25 A P -1.415 -5.240 -4.994 O3' 2.568 -8.534 -7.613 26 G P 3.062 -10.066 -7.576 O3' 8.426 -10.918 -6.108 27 C P 9.096 -12.245 -5.497 O3' 12.027 -14.185 -2.718 28 G P 11.774 -15.679 -3.253 O3' 12.054 -19.706 -0.192 29 C P 11.771 -20.892 -1.237 O3' 9.736 -25.316 -0.363 30 C P 9.809 -25.861 -1.873 O3' 6.796 -29.106 -4.135 14 syn 15 syn 17 syn 18 syn 1 30 + + c 2 29 + + c 3 28 W W c 4 27 + + c 5 26 + + c 6 25 S H t 7 24 H S t 8 23 W W c 9 22 + + c 10 21 + + c 11 20 + + c 12 19 + + c 14 17 ! ! ! 1 30 12 SG1 13 18 1 113.572 0.000 2 113.572 40.418 3 113.572 80.836 4 113.572 121.254 5 113.572 161.672 6 113.572 202.090 7 113.572 242.508 8 113.572 282.926 9 113.572 323.344 10 113.572 363.762 11 113.572 404.180 12 113.572 444.598 13 130.141 483.383 14 119.525 524.202 15 86.159 550.000 16 43.982 550.000 17 10.616 524.202 18 0.000 483.383 19 16.569 444.598 20 16.569 404.180 21 16.569 363.762 22 16.569 323.344 23 16.569 282.926 24 16.569 242.508 25 16.569 202.090 26 16.569 161.672 27 16.569 121.254 28 16.569 80.836 29 16.569 40.418 30 16.569 0.000