1
23
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23
CUuGCUGAAG UGCACACAGC AAG
3
5BU
Crystallography ?
? Angstroms
1
C
O3'
24.909 44.030 14.488
2
U
P
24.027 42.891 15.220
O3'
26.616 40.529 19.415
3
u
P
25.625 39.641 20.341
O3'
25.644 39.771 25.412
4
G
P
24.366 38.861 25.790
O3'
22.063 39.480 30.264
5
C
P
20.802 38.491 30.126
O3'
16.327 39.820 32.695
6
U
P
15.116 38.807 32.344
O3'
10.068 40.203 32.005
7
G
P
9.101 39.011 31.505
O3'
4.627 39.805 29.107
8
A
P
3.788 38.478 28.736
O3'
4.383 34.072 28.973
9
A
P
3.499 33.455 27.782
O3'
-0.102 28.866 28.970
10
G
P
0.437 27.349 28.968
O3'
3.663 27.620 33.184
11
U
P
4.878 28.396 32.506
O3'
9.530 27.326 33.695
12
G
P
10.300 28.421 32.804
O3'
15.032 27.456 31.541
13
C
P
15.500 28.783 30.748
O3'
18.979 28.506 26.983
14
A
P
19.068 29.829 26.096
O3'
20.084 30.158 21.002
15
C
P
20.006 31.766 20.931
O3'
17.752 33.806 16.510
16
A
P
17.479 35.380 16.744
O3'
13.921 37.684 13.778
17
C
P
14.124 39.225 14.164
O3'
10.340 42.554 14.984
18
A
P
11.179 43.818 15.505
O3'
9.222 47.257 18.881
19
G
P
10.289 48.377 19.309
O3'
10.324 50.939 23.628
20
C
P
11.623 51.873 23.512
O3'
14.352 53.035 27.562
21
A
P
15.774 53.765 27.425
O3'
20.838 52.764 29.831
22
A
P
21.803 53.815 29.129
O3'
26.674 52.536 29.254
23
G
P
27.382 53.759 28.474
O3'
31.482 53.203 25.380
1
23
+
+
c
2
22
-
-
c
3
21
-
-
c
4
20
+
+
c
5
19
+
+
c
6
18
-
-
c
7
17
+
+
c
1
23
7
SG1
8
9
SG2
16
16
1
31.429 0.000
2
31.429 26.190
3
31.429 52.381
4
31.429 78.571
5
31.429 104.762
6
31.429 130.952
7
31.429 157.143
8
15.714 157.143
9
0.000 157.143
10
94.286 340.476
11
94.286 314.286
12
94.286 288.095
13
94.286 261.905
14
94.286 235.714
15
94.286 209.524
16
110.000 157.143
17
94.286 157.143
18
94.286 130.952
19
94.286 104.762
20
94.286 78.571
21
94.286 52.381
22
94.286 26.190
23
94.286 0.000
1
23
1 2 3 4 5 6 7
8 9 10 11 12 13 14 15 16 17
18 19 20 21 22 23
CUuGCUG AAGUGCACAC AGCAAG
3
5BU
Crystallography ?
? Angstroms
1
C
O3'
9.132 3.852 32.988
2
U
P
8.965 5.246 32.230
O3'
9.847 5.653 26.888
3
u
P
9.307 6.977 26.151
O3'
8.266 7.129 21.126
4
G
P
7.736 8.598 20.756
O3'
4.707 9.778 16.882
5
C
P
4.567 11.378 17.020
O3'
0.062 13.390 15.494
6
U
P
0.184 14.965 15.787
O3'
-3.891 17.760 17.315
7
G
P
-3.346 19.195 17.793
O3'
-5.789 21.820 21.341
8
A
P
-5.175 23.194 21.895
O3'
-0.633 25.239 20.202
9
A
P
-0.013 25.883 21.535
O3'
0.856 31.675 20.475
10
G
P
2.338 32.172 20.146
O3'
3.471 29.781 15.696
11
U
P
3.762 28.276 16.115
O3'
7.433 25.540 14.253
12
G
P
7.274 24.166 15.050
O3'
10.947 20.819 15.780
13
C
P
10.276 19.618 16.622
O3'
12.821 16.918 20.034
14
A
P
11.766 16.020 20.845
O3'
12.535 14.831 25.790
15
C
P
11.220 14.022 26.227
O3'
9.424 14.479 31.107
16
A
P
8.078 13.640 31.270
O3'
4.284 14.931 34.399
17
C
P
3.319 13.674 34.160
O3'
-1.802 14.213 34.161
18
A
P
-2.367 12.776 33.707
O3'
-6.768 12.218 31.500
19
G
P
-6.780 10.632 31.295
O3'
-9.494 8.759 27.112
20
C
P
-9.318 7.165 27.014
O3'
-9.075 5.055 22.422
21
A
P
-8.714 3.499 22.600
O3'
-4.700 0.694 19.564
22
A
P
-4.401 -0.758 20.167
O3'
0.291 -2.955 19.789
23
G
P
0.387 -4.252 20.723
O3'
5.157 -6.203 22.083
1
23
+
+
c
2
22
-
-
c
3
21
-
-
c
4
20
+
+
c
5
19
+
+
c
6
18
-
-
c
7
17
+
+
c
1
23
7
SG1
8
9
SG2
16
16
1
94.286 550.000
2
94.286 523.810
3
94.286 497.619
4
94.286 471.429
5
94.286 445.238
6
94.286 419.048
7
94.286 392.857
8
0.000 209.524
9
15.714 209.524
10
31.429 209.524
11
31.429 235.714
12
31.429 261.905
13
31.429 288.095
14
31.429 314.286
15
31.429 340.476
16
15.714 340.476
17
31.429 392.857
18
31.429 419.048
19
31.429 445.238
20
31.429 471.429
21
31.429 497.619
22
31.429 523.810
23
31.429 550.000
10
15
+
+
c
11
14
-
-
c
12
13
+
+
c
13
12
+
+
c
14
11
-
-
c
15
10
+
+
c
10
15
6