1 9 1 2 3 4 5 6 7 8 9 GGAGAUGAC Crystallography ? ? Angstroms 1 G O3' 7.169 -9.498 3.809 2 G P 6.836 -8.098 3.088 O3' 6.257 -7.504 -2.465 3 A P 5.871 -6.038 -3.023 O3' 2.431 -5.057 -6.856 4 G P 2.540 -3.449 -6.868 O3' -2.324 -1.592 -9.125 5 A P -2.598 -0.010 -9.322 O3' -6.890 3.072 -8.849 6 U P -6.464 4.628 -8.900 O3' -7.400 7.713 -4.559 7 G P -6.787 9.205 -4.594 O3' -4.817 11.995 -0.462 8 A P -4.066 13.354 -0.912 O3' -0.547 16.425 1.810 9 C P 0.295 17.399 0.829 O3' 5.576 17.302 0.900 1 165.000 0.000 2 165.000 68.750 3 165.000 137.500 4 165.000 206.250 5 165.000 275.000 6 165.000 343.750 7 165.000 412.500 8 165.000 481.250 9 165.000 550.000 1 9 10 11 12 13 14 15 16 17 18 g ucATCTcc 1 OMG 2 OMU 3 OMC 8 OMC 9 OMC Crystallography ? ? Angstroms 1 g O3' 10.705 3.842 -4.294 2 u O3' 10.695 4.182 1.817 P 9.933 3.251 -3.001 3 c O3' 6.055 4.409 5.893 P 9.813 2.928 2.306 4 A P 5.077 3.200 6.338 O3' 0.111 3.354 8.339 5 T P -0.841 2.069 8.545 O3' -5.674 1.285 7.555 6 C P -5.728 -0.089 8.391 O3' -8.556 -4.053 5.941 7 T P -8.355 -5.533 6.542 O3' -9.843 -9.716 3.237 8 c O3' -7.986 -13.827 -1.230 P -9.505 -11.243 3.661 9 c O3' -3.242 -17.238 -3.953 P -7.604 -15.395 -1.183 1 0.000 550.000 2 0.000 481.250 3 0.000 412.500 4 0.000 343.750 5 0.000 275.000 6 0.000 206.250 7 0.000 137.500 8 0.000 68.750 9 0.000 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