1 29 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 GGAUUGUUAC UGCUACGGCA GGCAAAACC LOOP1 15 16 Crystallography ? ? Angstroms 1 G O3' -0.703 -11.394 -20.920 2 G P -1.002 -12.739 -20.083 O3' 2.319 -16.049 -18.227 3 A P 1.547 -17.024 -17.200 O3' 3.490 -17.769 -11.910 4 U P 2.626 -18.575 -10.809 O3' 2.390 -16.647 -5.536 5 U P 1.492 -17.542 -4.540 O3' -3.006 -15.114 -1.602 6 G P -4.442 -15.698 -1.160 O3' -8.592 -12.414 -0.455 7 U P -9.912 -13.278 -0.129 O3' -14.791 -12.011 -1.905 8 U P -15.414 -12.930 -0.735 O3' -18.430 -12.759 -5.759 9 A P -20.043 -12.796 -5.898 O3' -22.978 -8.153 -8.198 10 C P -24.473 -8.456 -8.715 O3' -24.881 -11.806 -13.646 11 U P -25.501 -13.231 -14.087 O3' -23.063 -16.340 -18.176 12 G P -24.111 -17.532 -18.445 O3' -21.674 -22.087 -20.045 13 C P -22.646 -23.371 -19.975 O3' -20.762 -28.175 -17.286 14 U P -21.864 -29.350 -17.236 O3' -22.565 -32.293 -12.916 15 A P -23.925 -33.156 -12.834 O3' -24.078 -32.874 -7.538 16 C P -25.624 -32.435 -7.412 O3' -24.971 -26.957 -5.564 17 G P -25.734 -26.498 -4.221 O3' -21.946 -26.421 -1.396 18 G P -21.518 -24.868 -1.512 O3' -16.022 -25.299 -3.371 19 C P -14.644 -24.564 -3.775 O3' -12.229 -25.368 -8.685 20 A P -10.900 -24.459 -8.741 O3' -9.874 -21.426 -13.654 21 G P -9.118 -20.023 -13.904 O3' -10.660 -16.669 -17.906 22 G P -9.799 -15.307 -17.958 O3' -12.336 -10.178 -17.700 23 C P -11.350 -8.907 -17.613 O3' -11.438 -5.277 -13.875 24 A P -10.148 -4.346 -14.134 O3' -7.475 -2.567 -9.685 25 A P -6.162 -1.706 -10.048 O3' -1.458 -1.952 -7.235 26 A P -1.181 -0.545 -7.977 O3' 3.571 -2.630 -7.919 27 A P 5.041 -2.400 -7.272 O3' 8.105 -5.676 -6.017 28 C P 9.331 -5.396 -7.025 O3' 12.262 -9.276 -9.633 29 C P 13.069 -8.672 -10.893 O3' 13.153 -12.066 -15.536 17 syn 1 29 + + c 2 28 W W c 3 27 S H t 3 28 W W c 4 25 - - c 5 24 - - c 6 23 + + c 7 22 W W c 9 22 H S t 10 21 + + c 11 20 - - c 12 19 + + c 13 18 + + c 14 17 S W t 9 21 ! ! ! 4 25 4 10 21 5 SG1 1 3 SG2 8 9 SG3 15 16 SG4 26 29 1 0.000 23.949 2 0.000 47.899 3 0.000 71.848 4 0.000 95.797 5 0.000 135.713 6 0.000 175.628 7 0.000 215.544 8 0.000 255.459 9 0.000 295.375 10 0.000 335.290 11 0.000 375.206 12 0.000 415.121 13 0.000 455.037 14 0.000 494.952 15 18.812 550.000 16 76.985 550.000 17 95.797 494.952 18 95.797 455.037 19 95.797 415.121 20 95.797 375.206 21 95.797 335.290 22 95.797 215.544 23 95.797 175.628 24 95.797 135.713 25 95.797 95.797 26 95.797 71.848 27 95.797 47.899 28 95.797 23.949 29 95.797 0.000