1 9 1 2 3 4 5 6 7 8 9 auggtgcuc 1 DA 2 DT 3 DG 4 DG 5 T3P 6 DG 7 DC 8 DT 9 DC Crystallography ? ? Angstroms 1 a O3' 13.625 -3.629 -3.902 2 u P 13.010 -4.403 -2.618 O3' 12.767 -1.456 2.316 3 g P 11.967 -1.779 3.689 O3' 9.159 2.542 6.174 4 g P 8.095 2.471 7.391 O3' 3.403 5.558 7.452 5 t P 1.927 5.339 8.070 O3' 1.087 5.250 6.696 6 g P -4.899 6.042 8.168 O3' -8.647 5.072 4.824 7 c P -9.821 4.055 5.315 O3' -12.331 0.637 2.277 8 u P -13.312 -0.495 2.857 O3' -14.868 -4.898 0.087 9 c P -15.851 -6.011 0.753 O3' -14.346 -11.247 0.801 1 0.000 0.000 2 0.000 68.750 3 0.000 137.500 4 0.000 206.250 5 0.000 275.000 6 0.000 343.750 7 0.000 412.500 8 0.000 481.250 9 0.000 550.000 1 9 10 11 12 13 14 15 16 17 18 G AGCACCAU Crystallography ? ? Angstroms 1 G O3' 0.426 -13.860 4.458 2 A P 1.149 -13.003 3.295 O3' -0.896 -12.606 -1.486 3 G P -0.153 -11.567 -2.473 O3' -2.648 -8.527 -5.857 4 C P -1.737 -7.343 -6.475 O3' -3.853 -2.784 -7.935 5 A P -2.839 -1.648 -8.473 O3' -4.198 3.470 -8.071 6 C P -3.061 4.457 -8.653 O3' -1.932 8.936 -6.025 7 C P -0.573 9.673 -6.489 O3' 2.468 11.969 -2.856 8 A P 3.910 12.493 -3.346 O3' 8.027 12.771 -0.142 9 U P 9.303 13.462 -0.848 O3' 14.269 11.491 0.186 1 165.000 550.000 2 165.000 481.250 3 165.000 412.500 4 165.000 343.750 5 165.000 275.000 6 165.000 206.250 7 165.000 137.500 8 165.000 68.750 9 165.000 0.000 1 9 - - c 2 8 - - c 3 7 + + c 4 6 + + c 5 5 - - c 6 4 + + c 7 3 + + c 8 2 - - c 9 1 + + c 1 9 9