1 8 1 2 3 4 5 6 7 8 GAGUGCUC Crystallography ? ? Angstroms 1 G O3' -13.612 -7.433 -1.282 2 A P -13.177 -6.165 -0.400 O3' -10.067 -7.523 3.767 3 G P -9.306 -6.332 4.551 O3' -4.619 -7.184 7.103 4 U P -3.981 -5.845 7.743 O3' 1.156 -4.448 7.314 5 G P 1.599 -2.963 7.766 O3' 6.559 -1.187 6.549 6 C P 6.894 0.311 7.052 O3' 9.627 3.880 4.249 7 U P 9.765 5.319 4.965 O3' 10.147 9.906 2.459 8 C P 10.166 11.144 3.492 O3' 7.833 15.627 3.177 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 GA GUGCUC Crystallography ? ? Angstroms 1 G O3' -7.139 13.541 1.429 2 A P -7.508 12.281 0.504 O3' -4.191 11.834 -3.701 3 G P -4.216 10.454 -4.537 O3' 0.184 8.659 -7.090 4 U P -0.015 7.210 -7.775 O3' 3.508 3.262 -7.531 5 G P 3.030 1.801 -8.021 O3' 5.957 -2.514 -6.631 6 C P 5.400 -3.945 -7.133 O3' 5.761 -8.397 -4.303 7 U P 5.082 -9.685 -5.000 O3' 2.965 -13.691 -2.378 8 C P 2.278 -14.766 -3.367 O3' -2.034 -17.356 -2.672 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