1 10 1 2 3 4 5 6 7 8 9 10 GCAGGCGUGC Crystallography ? ? Angstroms 1 G O3' 12.556 5.729 -7.164 2 C P 12.199 4.668 -6.008 O3' 12.405 5.791 -0.887 3 A P 11.811 4.608 0.033 O3' 9.451 5.777 4.704 4 G P 8.737 4.573 5.506 O3' 4.320 5.131 8.401 5 G P 3.537 3.750 8.712 O3' -1.836 3.328 8.791 6 C P -2.431 1.856 9.080 O3' -6.931 0.045 6.830 7 G P -7.300 -1.461 7.283 O3' -8.966 -5.174 3.834 8 U P -8.910 -6.732 4.252 O3' -8.583 -10.388 0.331 9 G P -8.344 -11.923 0.770 O3' -5.801 -15.551 -2.031 10 C P -5.738 -16.941 -1.215 O3' -1.868 -20.040 -0.342 4 syn 1 0.000 0.000 2 0.000 61.111 3 0.000 122.222 4 0.000 183.333 5 0.000 244.444 6 0.000 305.556 7 0.000 366.667 8 0.000 427.778 9 0.000 488.889 10 0.000 550.000 1 10 1 2 3 4 5 6 7 8 9 10 GCAGGCGUGC Crystallography ? ? Angstroms 1 G O3' 9.307 -11.638 7.057 2 C P 9.492 -10.488 5.944 O3' 9.121 -11.351 0.807 3 A P 9.144 -9.977 -0.038 O3' 6.481 -9.542 -4.618 4 G P 6.212 -8.119 -5.321 O3' 1.459 -6.346 -8.240 5 G P 1.168 -4.788 -8.544 O3' -3.597 -2.538 -8.116 6 C P -3.611 -0.954 -8.433 O3' -6.778 2.532 -6.032 7 G P -6.539 4.041 -6.553 O3' -6.538 8.226 -3.250 8 U P -5.911 9.618 -3.773 O3' -3.785 13.036 -0.252 9 G P -2.949 14.285 -0.843 O3' 1.091 16.618 1.574 10 C P 1.726 17.772 0.643 O3' 6.579 18.791 -0.337 4 syn 1 146.667 550.000 2 146.667 488.889 3 146.667 427.778 4 146.667 366.667 5 146.667 305.556 6 146.667 244.444 7 146.667 183.333 8 146.667 122.222 9 146.667 61.111 10 146.667 0.000 1 10 + + c 2 9 + + c 3 8 - - c 4 7 H W c 5 6 + + c 6 5 + + c 7 4 W H c 8 3 - - c 9 2 + + c 10 1 + + c 1 10 10