1 9 1 2 3 4 5 6 7 8 9 GGCaAGCCU 4 P5P Crystallography ? ? Angstroms 1 G O3' 10.891 -7.559 5.924 2 G P 10.003 -8.759 6.546 O3' 7.548 -8.382 11.178 3 C P 6.732 -9.738 11.517 O3' 2.120 -9.698 14.164 4 a O3' -3.411 -12.610 13.588 P 1.550 -11.199 14.320 5 A P -4.059 -14.071 13.343 O3' -9.258 -14.720 13.656 6 G P -8.922 -16.224 14.146 O3' -10.391 -19.947 10.450 7 C P -9.939 -21.464 10.787 O3' -8.204 -24.845 7.206 8 C P -7.751 -26.243 7.886 O3' -3.836 -29.234 5.934 9 U P -3.536 -30.482 6.919 O3' 1.195 -32.141 8.430 SG1 9 9 1 0.000 40.244 2 0.000 107.317 3 0.000 174.390 4 0.000 241.463 5 0.000 308.537 6 0.000 375.610 7 0.000 442.683 8 0.000 509.756 9 0.000 550.000 1 9 1 2 3 4 5 6 7 8 9 G GCaAGCCU 4 P5P Crystallography ? ? Angstroms 1 G O3' 9.094 -21.618 8.759 2 G P 8.518 -20.252 8.113 O3' 6.031 -20.136 3.485 3 C P 5.562 -18.632 3.118 O3' 1.074 -17.573 0.505 4 a O3' -3.554 -13.371 1.092 P 0.894 -15.978 0.342 5 A P -3.812 -11.791 1.333 O3' -8.692 -9.856 1.066 6 G P -8.011 -8.475 0.579 O3' -8.424 -4.516 4.232 7 C P -7.593 -3.165 3.918 O3' -5.168 -0.356 7.602 8 C P -4.390 0.906 6.952 O3' 0.120 2.827 8.948 9 U P 0.709 3.981 7.981 O3' 5.742 4.469 6.527 SG1 9 9 1 160.976 509.756 2 160.976 442.683 3 160.976 375.610 4 160.976 308.537 5 160.976 241.463 6 160.976 174.390 7 160.976 107.317 8 160.976 40.244 9 160.976 0.000 1 8 + + c 2 7 + + c 3 6 + + c 4 5 S H t 5 4 H S t 6 3 + + c 7 2 + + c 8 1 + + c 1 8 8