1 26 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 UGAGCUUCGG CUCUGAGCUU CGGCUC LOOP1 14 14 Crystallography ? ? Angstroms 1 U O3' -11.974 -5.646 12.360 2 G P -10.939 -5.597 11.131 O3' -10.857 -9.718 7.736 3 A P -9.735 -9.556 6.605 O3' -9.835 -11.638 2.070 4 G P -8.452 -11.162 1.431 O3' -7.787 -10.670 -3.556 5 C P -6.349 -10.022 -3.843 O3' -5.070 -5.637 -7.261 6 U P -3.575 -5.073 -7.210 O3' -2.510 -0.222 -8.325 7 U P -1.034 0.256 -7.937 O3' 0.981 4.678 -8.901 8 C P 2.496 4.408 -8.438 O3' 5.526 7.937 -6.347 9 G P 6.769 7.053 -5.847 O3' 9.109 8.677 -1.205 10 G P 10.390 7.769 -0.869 O3' 12.506 6.632 3.429 11 C P 13.785 5.804 2.936 O3' 15.906 2.394 6.128 12 U P 17.244 1.918 5.391 O3' 19.094 -2.836 5.904 13 C P 20.434 -2.714 5.029 O3' 22.230 -6.850 1.889 14 U O3' 11.974 -5.646 -12.360 15 G P 10.939 -5.597 -11.131 O3' 10.857 -9.718 -7.736 16 A P 9.735 -9.556 -6.605 O3' 9.835 -11.638 -2.070 17 G P 8.452 -11.162 -1.431 O3' 7.787 -10.670 3.556 18 C P 6.349 -10.022 3.843 O3' 5.070 -5.637 7.261 19 U P 3.575 -5.073 7.210 O3' 2.510 -0.222 8.325 20 U P 1.034 0.256 7.937 O3' -0.981 4.678 8.901 21 C P -2.496 4.408 8.438 O3' -5.526 7.937 6.347 22 G P -6.769 7.053 5.847 O3' -9.109 8.677 1.205 23 G P -10.390 7.769 0.869 O3' -12.506 6.632 -3.429 24 C P -13.785 5.804 -2.936 O3' -15.906 2.394 -6.128 25 U P -17.244 1.918 -5.391 O3' -19.094 -2.836 -5.904 26 C P -20.434 -2.714 -5.029 O3' -22.230 -6.850 -1.889 2 26 + + c 3 25 - - c 4 24 + + c 5 23 + + c 6 22 W W c 9 19 W W c 10 18 + + c 11 17 + + c 12 16 - - c 13 15 + + c 7 21 ! ! ! 8 20 ! ! ! 2 26 12 SG1 1 1 SG2 14 14 1 101.590 0.000 2 101.590 25.397 3 101.590 67.727 4 101.590 110.056 5 101.590 152.385 6 101.590 194.714 7 101.590 237.043 8 101.590 279.372 9 101.590 321.701 10 101.590 364.030 11 101.590 406.359 12 101.590 448.688 13 101.590 491.018 14 50.795 550.000 15 0.000 491.018 16 0.000 448.688 17 0.000 406.359 18 0.000 364.030 19 0.000 321.701 20 0.000 279.372 21 0.000 237.043 22 0.000 194.714 23 0.000 152.385 24 0.000 110.056 25 0.000 67.727 26 0.000 25.397