1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
Chen, X.
Kierzek, R.
Turner, D.H.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
1
C9 H14 N3 O8 P
323.197
y
CYTIDINE-5'-MONOPHOSPHATE
RNA linking
C10 H14 N5 O8 P
363.221
y
GUANOSINE-5'-MONOPHOSPHATE
RNA linking
C9 H14 N3 O8 P
323.197
n
ISOCYTIDINE-5'-MONOPHOSPHATE
RNA linking
C10 H14 N5 O8 P
363.221
n
ISOGUANOSINE-5'-MONOPHOSPHATE
RNA linking
N
1
N
O
N
2
N
P
N
3
N
O
N
4
N
O
N
5
N
O
N
6
N
C
N
7
R
C
N
8
N
O
N
9
S
C
N
10
N
O
N
11
R
C
N
12
N
O
N
13
R
C
N
14
N
N
N
15
N
C
N
16
N
O
N
17
N
N
N
18
N
C
N
19
N
N
N
20
N
C
N
21
N
C
N
22
N
H
N
23
N
H
N
24
N
H
N
25
N
H
N
26
N
H
N
27
N
H
N
28
N
H
N
29
N
H
N
30
N
H
N
31
N
H
N
32
N
H
N
33
N
H
N
34
N
H
N
35
N
H
N
36
N
O
N
37
N
P
N
38
N
O
N
39
N
O
N
40
N
O
N
41
N
C
N
42
R
C
N
43
N
O
N
44
S
C
N
45
N
O
N
46
R
C
N
47
N
O
N
48
R
C
Y
49
N
N
Y
50
N
C
Y
51
N
N
Y
52
N
C
N
53
N
C
N
54
N
O
N
55
N
N
N
56
N
C
N
57
N
N
N
58
N
N
Y
59
N
C
N
60
N
H
N
61
N
H
N
62
N
H
N
63
N
H
N
64
N
H
N
65
N
H
N
66
N
H
N
67
N
H
N
68
N
H
N
69
N
H
N
70
N
H
N
71
N
H
N
72
N
H
N
73
N
H
N
74
N
P
N
75
N
O
N
76
N
O
N
77
N
O
N
78
N
O
N
79
N
O
N
80
R
C
N
81
R
C
N
82
S
C
N
83
R
C
N
84
N
C
N
85
N
O
N
86
N
O
N
87
N
N
N
88
N
C
N
89
N
N
N
90
N
C
N
91
N
O
N
92
N
N
N
93
N
C
N
94
N
C
N
95
N
H
N
96
N
H
N
97
N
H
N
98
N
H
N
99
N
H
N
100
N
H
N
101
N
H
N
102
N
H
N
103
N
H
N
104
N
H
N
105
N
H
N
106
N
H
N
107
N
H
N
108
N
H
N
109
N
P
N
110
N
O
N
111
N
O
N
112
N
O
N
113
N
O
N
114
N
O
N
115
R
C
N
116
R
C
N
117
S
C
N
118
R
C
N
119
N
C
N
120
N
O
N
121
N
O
N
122
N
N
N
123
N
O
N
124
N
C
N
125
N
C
N
126
N
N
N
127
N
C
N
128
N
N
N
129
N
C
N
130
N
N
N
131
N
C
N
132
N
N
N
133
N
H
N
134
N
H
N
135
N
H
N
136
N
H
N
137
N
H
N
138
N
H
N
139
N
H
N
140
N
H
N
141
N
H
N
142
N
H
N
143
N
H
N
144
N
H
N
145
N
H
N
146
N
H
N
1
N
sing
N
2
N
sing
N
3
N
doub
N
4
N
sing
N
5
N
sing
N
6
N
sing
N
7
N
sing
N
8
N
sing
N
9
N
sing
N
10
N
sing
N
11
N
sing
N
12
N
sing
N
13
N
sing
N
14
N
sing
N
15
N
sing
N
16
N
sing
N
17
N
sing
N
18
N
sing
N
19
N
sing
N
20
N
sing
N
21
N
sing
N
22
N
sing
N
23
N
sing
N
24
N
sing
N
25
N
sing
N
26
N
sing
N
27
N
doub
N
28
N
sing
N
29
N
doub
N
30
N
sing
N
31
N
sing
N
32
N
sing
N
33
N
sing
N
34
N
doub
N
35
N
sing
N
36
N
sing
N
37
N
sing
N
38
N
sing
N
39
N
doub
N
40
N
sing
N
41
N
sing
N
42
N
sing
N
43
N
sing
N
44
N
sing
N
45
N
sing
N
46
N
sing
N
47
N
sing
N
48
N
sing
N
49
N
sing
N
50
N
sing
N
51
N
sing
N
52
N
sing
N
53
N
sing
N
54
N
sing
N
55
N
sing
N
56
N
sing
N
57
N
sing
N
58
N
sing
N
59
N
sing
N
60
N
sing
Y
61
N
sing
Y
62
N
sing
Y
63
N
doub
N
64
N
sing
Y
65
N
sing
N
66
N
sing
Y
67
N
doub
N
68
N
doub
N
69
N
sing
N
70
N
sing
N
71
N
sing
N
72
N
sing
N
73
N
doub
N
74
N
sing
N
75
N
sing
N
76
N
sing
N
77
N
doub
N
78
N
sing
N
79
N
sing
N
80
N
sing
N
81
N
sing
N
82
N
sing
N
83
N
sing
N
84
N
sing
N
85
N
sing
N
86
N
sing
N
87
N
sing
N
88
N
sing
N
89
N
sing
N
90
N
sing
N
91
N
sing
N
92
N
sing
N
93
N
sing
N
94
N
sing
N
95
N
sing
N
96
N
sing
N
97
N
sing
N
98
N
sing
N
99
N
sing
N
100
N
sing
N
101
N
sing
N
102
N
sing
N
103
N
sing
N
104
N
sing
N
105
N
doub
N
106
N
sing
N
107
N
doub
N
108
N
sing
N
109
N
sing
N
110
N
doub
N
111
N
sing
N
112
N
sing
N
113
N
doub
N
114
N
sing
N
115
N
sing
N
116
N
sing
N
117
N
sing
N
118
N
sing
N
119
N
sing
N
120
N
sing
N
121
N
sing
N
122
N
sing
N
123
N
sing
N
124
N
sing
N
125
N
sing
N
126
N
sing
N
127
N
sing
N
128
N
sing
N
129
N
sing
N
130
N
sing
N
131
N
sing
N
132
N
sing
N
133
N
sing
N
134
N
sing
N
135
N
sing
N
136
N
sing
N
137
N
sing
N
138
N
sing
N
139
N
sing
N
140
N
doub
N
141
N
doub
N
142
N
sing
N
143
N
sing
N
144
N
sing
N
145
N
doub
N
146
N
sing
N
147
N
sing
N
148
N
sing
N
149
N
doub
N
150
N
sing
N
151
N
sing
N
152
N
sing
US
J.Am.Chem.Soc.
JACSAT
0004
0002-7863
123
1267
1274
10.1021/ja002623i
11456697
Stability and structure of RNA duplexes containing isoguanosine and isocytidine.
2001
10.2210/pdb1g3a/pdb
pdb_00001g3a
1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
1906.205
5'-R(*CP*(IG)P*CP*GP*(IC)P*G)-3'
2
syn
polymer
no
yes
C(IG)CG(IC)G
CGCGCG
A,B
polyribonucleotide
n
n
n
n
n
n
39.222
1
19
A
1
B
6
-0.573
A_C1:G6_B
1
-40.970
0.373
-0.354
0.059
2.663
A
2
B
5
-4.326
A_IG2:IC5_B
2
-20.565
-0.166
0.226
-0.121
4.256
1
19
A
3
B
4
0.326
A_C3:G4_B
3
-22.180
0.442
0.114
-0.120
-4.209
1
19
A
4
B
3
0.152
A_G4:C3_B
4
-21.827
-0.404
0.119
-0.114
-2.298
A
5
B
2
-4.279
A_IC5:IG2_B
5
-20.635
0.152
0.211
-0.114
-36.443
1
19
A
6
B
1
-0.106
A_G6:C1_B
6
-39.634
-0.357
-0.322
0.036
3.303
47.728
A
A
1
2
29.014
B
B
6
5
3.959
22.478
-1.019
-0.768
AA_C1IG2:IC5G6_BB
1
-9.615
12.412
41.310
-3.107
0.336
3.143
35.792
A
A
2
3
1.277
B
B
5
4
3.158
0.784
0.338
-1.310
AA_IG2C3:G4IC5_BB
2
1.944
-3.165
35.732
-2.240
-0.280
2.091
34.990
A
A
3
4
30.341
B
B
4
3
3.213
17.469
-0.018
-1.465
AA_C3G4:C3G4_BB
3
0.157
-0.273
30.435
-4.732
0.051
3.136
35.481
A
A
4
5
1.325
B
B
3
2
3.155
0.807
-0.321
-1.325
AA_G4IC5:IG2C3_BB
4
-1.539
2.527
35.440
-2.288
0.310
3.230
46.189
A
A
5
6
28.900
B
B
2
1
3.914
21.721
0.935
-0.799
AA_IC5G6:C1IG2_BB
5
8.777
-11.678
40.090
-3.210
-0.307
database_2
pdbx_nmr_software
pdbx_struct_assembly
pdbx_struct_oper_list
struct_conn
chem_comp_atom
chem_comp_bond
repository
Initial release
Version format compliance
Version format compliance
Data collection
Database references
Derived calculations
Data collection
1
0
2001-08-01
1
1
2008-04-27
1
2
2011-07-13
1
3
2022-02-23
1
4
2024-05-22
_database_2.pdbx_DOI
_database_2.pdbx_database_accession
_pdbx_nmr_software.name
_struct_conn.pdbx_leaving_atom_flag
RCSB
Y
RCSB
2000-10-23
REL
REL
Solid phase phosphoramidite chemistry
sample
1
7.0
ambient
303
K
simulated annealing
molecular dynamics
3.5 mM RNA oligomer, 10 mM phosphate, pH=7.0, water
varian
collection
VNMR
5.1
MSI
processing
Felix
95
500
Varian
INOVA
500
Varian
UNITY
C
1
n
1
C
1
A
IG
2
n
2
IG
2
A
C
3
n
3
C
3
A
G
4
n
4
G
4
A
IC
5
n
5
IC
5
A
G
6
n
6
G
6
A
C
1
n
1
C
1
B
IG
2
n
2
IG
2
B
C
3
n
3
C
3
B
G
4
n
4
G
4
B
IC
5
n
5
IC
5
B
G
6
n
6
G
6
B
author_defined_assembly
2
dimeric
A
IG
2
ISOGUANOSINE-5'-MONOPHOSPHATE
A
IG
2
G
A
IC
5
ISOCYTIDINE-5'-MONOPHOSPHATE
A
IC
5
C
B
IG
2
ISOGUANOSINE-5'-MONOPHOSPHATE
B
IG
2
G
B
IC
5
ISOCYTIDINE-5'-MONOPHOSPHATE
B
IC
5
C
1.0000000000
0.0000000000
0.0000000000
0.0000000000
1.0000000000
0.0000000000
0.0000000000
0.0000000000
1.0000000000
1_555
x,y,z
identity operation
0.0000000000
0.0000000000
0.0000000000
1
A
C
1
0.095
SIDE CHAIN
1
B
C
1
0.094
SIDE CHAIN
1
B
G
4
0.059
SIDE CHAIN
1
4.51
0.70
108.50
113.01
A
A
A
O4'
C1'
N1
C
C
C
3
3
3
N
STRUCTURE OF RNA DUPLEXES (CIGCGICG)2
1
N
N
1
N
N
covale
1.611
both
A
C
1
A
O3'
C
1
1_555
A
IG
2
A
P
IG
2
1_555
covale
1.614
both
A
IG
2
A
O3'
IG
2
1_555
A
C
3
A
P
C
3
1_555
covale
1.617
both
A
G
4
A
O3'
G
4
1_555
A
IC
5
A
P
IC
5
1_555
covale
1.617
both
A
IC
5
A
O3'
IC
5
1_555
A
G
6
A
P
G
6
1_555
covale
1.611
both
B
C
1
B
O3'
C
1
1_555
B
IG
2
B
P
IG
2
1_555
covale
1.614
both
B
IG
2
B
O3'
IG
2
1_555
B
C
3
B
P
C
3
1_555
covale
1.617
both
B
G
4
B
O3'
G
4
1_555
B
IC
5
B
P
IC
5
1_555
covale
1.617
both
B
IC
5
B
O3'
IC
5
1_555
B
G
6
B
P
G
6
1_555
hydrog
WATSON-CRICK
A
C
1
A
N3
C
1
1_555
B
G
6
B
N1
G
6
1_555
hydrog
WATSON-CRICK
A
C
1
A
N4
C
1
1_555
B
G
6
B
O6
G
6
1_555
hydrog
WATSON-CRICK
A
C
1
A
O2
C
1
1_555
B
G
6
B
N2
G
6
1_555
hydrog
IG-IC PAIR
A
IG
2
A
N1
IG
2
1_555
B
IC
5
B
N3
IC
5
1_555
hydrog
WATSON-CRICK
A
C
3
A
N3
C
3
1_555
B
G
4
B
N1
G
4
1_555
hydrog
WATSON-CRICK
A
C
3
A
N4
C
3
1_555
B
G
4
B
O6
G
4
1_555
hydrog
WATSON-CRICK
A
C
3
A
O2
C
3
1_555
B
G
4
B
N2
G
4
1_555
hydrog
WATSON-CRICK
A
G
4
A
N1
G
4
1_555
B
C
3
B
N3
C
3
1_555
hydrog
WATSON-CRICK
A
G
4
A
N2
G
4
1_555
B
C
3
B
O2
C
3
1_555
hydrog
WATSON-CRICK
A
G
4
A
O6
G
4
1_555
B
C
3
B
N4
C
3
1_555
hydrog
IC-IG PAIR
A
IC
5
A
N3
IC
5
1_555
B
IG
2
B
N1
IG
2
1_555
hydrog
WATSON-CRICK
A
G
6
A
N1
G
6
1_555
B
C
1
B
N3
C
1
1_555
hydrog
WATSON-CRICK
A
G
6
A
N2
G
6
1_555
B
C
1
B
O2
C
1
1_555
hydrog
WATSON-CRICK
A
G
6
A
O6
G
6
1_555
B
C
1
B
N4
C
1
1_555
RNA
Double Helix, RNA
1G3A
PDB
1
1G3A
1
6
1G3A
1
6
1G3A
A
1
1
6
1
6
1G3A
1
6
1G3A
B
1
1
6