1 8 1 2 3 4 5 6 7 8 GGCGUGCC Crystallography ? ? Angstroms 1 G O3' -10.272 -10.257 -0.277 2 G P -9.733 -9.168 0.779 O3' -6.143 -10.500 4.481 3 C P -5.659 -9.257 5.392 O3' -0.612 -8.655 7.079 4 G P -0.282 -7.213 7.729 O3' 4.516 -4.815 7.095 5 U P 4.595 -3.380 7.826 O3' 6.313 1.102 5.818 6 G P 6.006 2.442 6.660 O3' 7.438 7.200 4.784 7 C P 6.854 8.435 5.648 O3' 5.193 13.031 3.622 8 C P 4.545 14.032 4.709 O3' 0.713 17.306 4.249 1 188.571 0.000 2 188.571 78.571 3 188.571 157.143 4 188.571 235.714 5 188.571 314.286 6 188.571 392.857 7 188.571 471.429 8 188.571 550.000 1 8 1 2 3 4 5 6 7 8 GG CGUGCC Crystallography ? ? Angstroms 1 G O3' -11.878 8.491 0.351 2 G P -11.206 7.494 -0.717 O3' -7.852 9.365 -4.381 3 C P -7.194 8.217 -5.307 O3' -2.146 8.448 -7.065 4 G P -1.594 7.082 -7.731 O3' 3.518 5.477 -7.177 5 U P 3.793 4.072 -7.919 O3' 6.279 -0.051 -5.954 6 G P 6.189 -1.434 -6.779 O3' 8.439 -5.850 -4.878 7 C P 8.062 -7.176 -5.720 O3' 7.271 -11.947 -3.609 8 C P 6.797 -13.062 -4.675 O3' 3.602 -16.960 -4.008 1 0.000 550.000 2 0.000 471.429 3 0.000 392.857 4 0.000 314.286 5 0.000 235.714 6 0.000 157.143 7 0.000 78.571 8 0.000 0.000 1 8 + + c 2 7 + + c 3 6 + + c 4 5 W W c 5 4 W W c 6 3 + + c 7 2 + + c 8 1 + + c 1 8 8