1 8 1 2 3 4 5 6 7 8 GCGGACGC Crystallography ? ? Angstroms 1 G O3' -34.095 95.764 77.187 2 C P -35.043 95.883 78.498 O3' -34.633 99.147 82.318 3 G P -35.989 99.123 83.209 O3' -37.963 103.045 85.860 4 G P -39.394 102.778 86.577 O3' -42.753 106.405 88.007 5 A P -44.212 105.981 88.557 O3' -49.375 106.825 86.261 6 C P -50.693 105.932 86.519 O3' -54.628 105.344 83.645 7 G P -55.667 104.307 84.319 O3' -58.626 101.006 81.923 8 C P -59.312 99.957 82.945 O3' -60.182 95.085 82.338 1 0.000 0.000 2 0.000 78.571 3 0.000 157.143 4 0.000 235.714 5 0.000 314.286 6 0.000 392.857 7 0.000 471.429 8 0.000 550.000 1 8 9 10 11 12 13 14 15 16 GC GGACGC Crystallography ? ? Angstroms 1 G O3' -45.671 88.572 80.946 2 C P -45.319 89.497 79.663 O3' -48.291 90.599 75.774 3 G P -47.662 91.802 74.891 O3' -50.318 95.259 72.214 4 G P -49.449 96.422 71.488 O3' -51.223 101.025 70.017 5 A P -50.199 102.148 69.468 O3' -48.708 107.171 71.750 6 C P -47.318 107.948 71.489 O3' -45.043 111.256 74.341 7 G P -43.649 111.714 73.663 O3' -39.364 112.890 76.042 8 C P -38.121 113.019 75.014 O3' -33.383 111.595 75.599 1 188.571 550.000 2 188.571 471.429 3 188.571 392.857 4 188.571 314.286 5 188.571 235.714 6 188.571 157.143 7 188.571 78.571 8 188.571 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