1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
Wu, H.
Yang, P.K.
Butcher, S.E.
Kang, S.
Chanfreau, G.
Feigon, J.
http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic
C10 H14 N5 O7 P
347.221
y
ADENOSINE-5'-MONOPHOSPHATE
RNA linking
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 H13 N2 O9 P
324.181
y
URIDINE-5'-MONOPHOSPHATE
RNA linking
UK
EMBO J.
EMJODG
0897
0261-4189
20
7240
7249
10.1093/emboj/20.24.7240
11743000
A novel family of RNA tetraloop structure forms the recognition site for Saccharomyces cerevisiae RNase III.
2001
10.2210/pdb1k4b/pdb
pdb_00001k4b
1.000000
0.000000
0.000000
0.000000
1.000000
0.000000
0.000000
0.000000
1.000000
0.00000
0.00000
0.00000
1
SINGLE WAVELENGTH
M
1
1.0
An RNA Hairpin with AGUU Tetraloop, the primary recognition site for S. cerevisiae RNase III.
4463.691
5'-R(*GP*GP*UP*UP*CP*AP*GP*UP*UP*GP*AP*AP*CP*C)-3'
1
syn
polymer
no
no
GGUUCAGUUGAACC
GGUUCAGUUGAACC
A
polyribonucleotide
n
n
n
n
n
n
n
n
n
n
n
n
n
n
0.631
1
19
A
1
A
14
-2.153
A_G1:C14_A
1
3.564
-0.347
-0.163
0.234
-3.768
1
19
A
2
A
13
0.289
A_G2:C13_A
2
0.677
-0.948
-0.136
0.023
5.216
1
20
A
3
A
12
-4.457
A_U3:A12_A
3
-0.004
-0.865
-0.276
0.249
-1.085
1
20
A
4
A
11
-3.936
A_U4:A11_A
4
-0.573
0.481
-0.006
0.197
2.126
1
19
A
5
A
10
-4.456
A_C5:G10_A
5
0.022
-0.450
-0.065
0.251
4.134
26.707
A
A
1
2
11.930
A
A
14
13
4.446
5.471
-0.168
-1.112
AA_G1G2:C13C14_AA
1
-1.302
2.838
26.119
-4.297
-0.087
2.952
30.930
A
A
2
3
19.374
A
A
13
12
3.528
10.150
-0.146
-1.217
AA_G2U3:A12C13_AA
2
-0.375
0.716
29.253
-4.286
0.200
3.194
35.228
A
A
3
4
21.009
A
A
12
11
4.026
12.453
0.558
-1.640
AA_U3U4:A11A12_AA
3
-1.346
2.272
32.992
-4.825
-1.151
3.986
29.463
A
A
4
5
-11.976
A
A
11
10
3.703
-6.047
0.289
-1.737
AA_U4C5:G10A11_AA
4
1.542
-3.054
28.809
-1.879
-0.178
database_2
pdbx_nmr_software
pdbx_struct_assembly
pdbx_struct_oper_list
repository
Initial release
Version format compliance
Version format compliance
Data collection
Database references
Derived calculations
1
0
2001-12-19
1
1
2008-04-27
1
2
2011-07-13
1
3
2022-02-23
_database_2.pdbx_DOI
_database_2.pdbx_database_accession
_pdbx_nmr_software.name
STRUCTURE OF AGAA RNA TETRALOOP, NMR, 20 STRUCTURES
RCSB
Y
RCSB
2001-10-07
REL
structures with the lowest energy
100
20
2D NOESY
2D NOESY
3D_13C-separated_NOESY
10mM
6.3
1
atm
274
K
10mM
6.3
1
atm
293
K
The structures are based on a total of 341 restraints, 261 are NOE-derived distance constraints, 54 dihedral angle restraints. Additional 26 distance restraints from hydrogen bond are used in the stem region.
distance geometry
simulated annealing
1
this is the lowest energy structure.
2.0 mM RNA hairpin, pH6.3, 10 mM NaCl, 90% H2O, 10% D2O
90% H2O/10% D2O
2.0 mM RNA hairpin, pH6.3, 10 mM NaCl, 99.99% D2o
99.99% D2o
1.0 mM 13C/15N labeled RNA hairpin, pH6.3, 10 mM NaCl, 90% H2O, 10% D2O
90% H2O/10% D2O
1.0 mM 13C/15N labeled RNA hairpin, pH6.3, 10 mM NaCl, 99.99% D2o
99.99% D2o
Bruker
collection
XwinNMR
2.6
MSI
data analysis
Felix
2000
Brunger
refinement
X-PLOR
3.1
500
Bruker
DRX
500
Bruker
AMX
600
Bruker
DRX
G
1
n
1
G
1
A
G
2
n
2
G
2
A
U
3
n
3
U
3
A
U
4
n
4
U
4
A
C
5
n
5
C
5
A
A
6
n
6
A
6
A
G
7
n
7
G
7
A
U
8
n
8
U
8
A
U
9
n
9
U
9
A
G
10
n
10
G
10
A
A
11
n
11
A
11
A
A
12
n
12
A
12
A
C
13
n
13
C
13
A
C
14
n
14
C
14
A
author_defined_assembly
1
monomeric
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
4.55
0.50
113.10
117.65
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
1
-2.63
0.40
106.40
103.77
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
1
4.53
0.50
113.10
117.63
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
1
-2.68
0.40
106.40
103.72
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
1
3.72
0.50
113.80
117.52
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
1
4.68
0.50
113.10
117.78
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
1
-2.62
0.40
106.40
103.78
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
1
4.54
0.50
113.10
117.64
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
1
-2.72
0.40
106.40
103.68
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
1
3.75
0.50
113.80
117.55
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
1
3.68
0.50
113.80
117.48
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
2
4.58
0.50
113.10
117.68
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
2
-2.75
0.40
106.40
103.65
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
2
4.54
0.50
113.10
117.64
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
2
-2.68
0.40
106.40
103.72
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
2
3.74
0.50
113.80
117.54
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
2
4.63
0.50
113.10
117.73
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
2
-2.59
0.40
106.40
103.81
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
2
4.59
0.50
113.10
117.69
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
2
-2.72
0.40
106.40
103.68
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
2
3.79
0.50
113.80
117.59
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
2
3.66
0.50
113.80
117.46
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
3
4.51
0.50
113.10
117.61
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
3
-2.67
0.40
106.40
103.73
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
3
4.48
0.50
113.10
117.58
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
3
-2.64
0.40
106.40
103.76
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
3
3.73
0.50
113.80
117.53
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
3
4.53
0.50
113.10
117.63
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
3
-2.47
0.40
106.40
103.93
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
3
4.44
0.50
113.10
117.54
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
3
-2.63
0.40
106.40
103.77
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
3
3.72
0.50
113.80
117.52
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
3
3.74
0.50
113.80
117.54
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
4
4.57
0.50
113.10
117.67
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
4
-2.66
0.40
106.40
103.74
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
4
4.55
0.50
113.10
117.65
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
4
-2.70
0.40
106.40
103.70
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
4
3.75
0.50
113.80
117.55
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
4
4.73
0.50
113.10
117.83
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
4
-2.62
0.40
106.40
103.78
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
4
4.48
0.50
113.10
117.58
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
4
-2.62
0.40
106.40
103.78
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
4
3.66
0.50
113.80
117.46
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
4
3.72
0.50
113.80
117.52
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
5
4.51
0.50
113.10
117.61
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
5
-2.61
0.40
106.40
103.79
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
5
4.54
0.50
113.10
117.64
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
5
-2.65
0.40
106.40
103.75
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
5
3.63
0.50
113.80
117.43
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
5
4.61
0.50
113.10
117.71
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
5
-2.51
0.40
106.40
103.89
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
5
4.58
0.50
113.10
117.68
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
5
-2.83
0.40
106.40
103.57
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
5
3.69
0.50
113.80
117.49
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
5
3.70
0.50
113.80
117.50
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
6
4.57
0.50
113.10
117.67
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
6
-2.71
0.40
106.40
103.69
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
6
4.55
0.50
113.10
117.65
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
6
-2.71
0.40
106.40
103.69
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
6
3.68
0.50
113.80
117.48
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
6
4.55
0.50
113.10
117.65
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
6
-2.52
0.40
106.40
103.88
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
6
4.59
0.50
113.10
117.69
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
6
-2.74
0.40
106.40
103.66
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
6
3.65
0.50
113.80
117.45
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
6
3.72
0.50
113.80
117.52
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
7
4.60
0.50
113.10
117.70
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
7
-2.69
0.40
106.40
103.71
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
7
4.46
0.50
113.10
117.56
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
7
-2.58
0.40
106.40
103.82
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
7
3.77
0.50
113.80
117.57
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
7
4.72
0.50
113.10
117.82
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
7
-2.63
0.40
106.40
103.77
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
7
4.58
0.50
113.10
117.68
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
7
-2.72
0.40
106.40
103.68
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
7
3.75
0.50
113.80
117.55
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
7
3.67
0.50
113.80
117.47
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
8
4.52
0.50
113.10
117.62
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
8
-2.66
0.40
106.40
103.74
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
8
4.55
0.50
113.10
117.65
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
8
-2.66
0.40
106.40
103.74
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
8
3.74
0.50
113.80
117.54
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
8
4.61
0.50
113.10
117.71
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
8
-2.62
0.40
106.40
103.78
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
8
4.62
0.50
113.10
117.72
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
8
-2.73
0.40
106.40
103.67
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
8
3.76
0.50
113.80
117.56
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
8
3.64
0.50
113.80
117.44
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
9
4.57
0.50
113.10
117.67
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
9
-2.63
0.40
106.40
103.77
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
9
4.51
0.50
113.10
117.61
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
9
-2.61
0.40
106.40
103.79
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
9
3.75
0.50
113.80
117.55
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
9
4.60
0.50
113.10
117.70
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
9
-2.59
0.40
106.40
103.81
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
9
4.54
0.50
113.10
117.64
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
9
-2.67
0.40
106.40
103.73
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
9
3.67
0.50
113.80
117.47
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
9
3.81
0.50
113.80
117.61
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
10
4.54
0.50
113.10
117.64
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
10
-2.64
0.40
106.40
103.76
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
10
4.53
0.50
113.10
117.63
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
10
-2.67
0.40
106.40
103.73
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
10
3.71
0.50
113.80
117.51
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
10
4.66
0.50
113.10
117.76
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
10
-2.58
0.40
106.40
103.82
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
10
4.45
0.50
113.10
117.55
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
10
-2.70
0.40
106.40
103.70
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
10
3.74
0.50
113.80
117.54
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
10
3.72
0.50
113.80
117.52
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
11
4.53
0.50
113.10
117.63
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
11
-2.68
0.40
106.40
103.72
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
11
4.51
0.50
113.10
117.61
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
11
-2.61
0.40
106.40
103.79
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
11
3.70
0.50
113.80
117.50
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
11
4.70
0.50
113.10
117.80
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
11
-2.62
0.40
106.40
103.78
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
11
4.58
0.50
113.10
117.68
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
11
-2.75
0.40
106.40
103.65
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
11
3.68
0.50
113.80
117.48
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
11
3.78
0.50
113.80
117.58
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
12
4.52
0.50
113.10
117.62
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
12
-2.62
0.40
106.40
103.78
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
12
4.55
0.50
113.10
117.65
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
12
-2.67
0.40
106.40
103.73
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
12
3.66
0.50
113.80
117.46
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
12
4.61
0.50
113.10
117.71
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
12
-2.61
0.40
106.40
103.79
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
12
4.49
0.50
113.10
117.59
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
12
-2.75
0.40
106.40
103.65
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
12
3.67
0.50
113.80
117.47
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
12
3.69
0.50
113.80
117.49
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
13
4.49
0.50
113.10
117.59
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
13
-2.67
0.40
106.40
103.73
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
13
4.64
0.50
113.10
117.74
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
13
-2.70
0.40
106.40
103.70
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
13
3.72
0.50
113.80
117.52
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
13
4.66
0.50
113.10
117.76
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
13
-2.53
0.40
106.40
103.87
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
13
4.55
0.50
113.10
117.65
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
13
-2.78
0.40
106.40
103.62
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
13
3.72
0.50
113.80
117.52
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
13
3.73
0.50
113.80
117.53
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
14
4.53
0.50
113.10
117.63
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
14
-2.60
0.40
106.40
103.80
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
14
4.53
0.50
113.10
117.63
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
14
-2.62
0.40
106.40
103.78
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
14
3.80
0.50
113.80
117.60
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
14
4.61
0.50
113.10
117.71
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
14
-2.65
0.40
106.40
103.75
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
14
4.64
0.50
113.10
117.74
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
14
-2.73
0.40
106.40
103.67
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
14
3.70
0.50
113.80
117.50
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
14
3.71
0.50
113.80
117.51
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
15
4.58
0.50
113.10
117.68
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
15
-2.65
0.40
106.40
103.75
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
15
4.55
0.50
113.10
117.65
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
15
-2.63
0.40
106.40
103.77
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
15
3.77
0.50
113.80
117.57
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
15
4.64
0.50
113.10
117.74
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
15
-2.58
0.40
106.40
103.82
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
15
4.39
0.50
113.10
117.49
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
15
-2.67
0.40
106.40
103.73
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
15
3.62
0.50
113.80
117.42
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
15
3.62
0.50
113.80
117.42
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
16
4.50
0.50
113.10
117.60
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
16
-2.62
0.40
106.40
103.78
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
16
4.55
0.50
113.10
117.65
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
16
-2.73
0.40
106.40
103.67
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
16
3.65
0.50
113.80
117.45
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
16
4.68
0.50
113.10
117.78
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
16
-2.57
0.40
106.40
103.83
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
16
4.49
0.50
113.10
117.59
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
16
-2.75
0.40
106.40
103.65
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
16
3.72
0.50
113.80
117.52
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
16
3.61
0.50
113.80
117.41
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
17
4.51
0.50
113.10
117.61
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
17
-2.65
0.40
106.40
103.75
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
17
4.52
0.50
113.10
117.62
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
17
-2.61
0.40
106.40
103.79
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
17
3.74
0.50
113.80
117.54
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
17
4.65
0.50
113.10
117.75
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
17
-2.64
0.40
106.40
103.76
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
17
4.59
0.50
113.10
117.69
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
17
-2.68
0.40
106.40
103.72
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
17
3.74
0.50
113.80
117.54
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
17
3.69
0.50
113.80
117.49
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
18
4.59
0.50
113.10
117.69
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
18
-2.74
0.40
106.40
103.66
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
18
4.54
0.50
113.10
117.64
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
18
-2.65
0.40
106.40
103.75
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
18
3.68
0.50
113.80
117.48
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
18
4.60
0.50
113.10
117.70
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
18
-2.57
0.40
106.40
103.83
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
18
4.52
0.50
113.10
117.62
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
18
-2.73
0.40
106.40
103.67
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
18
3.65
0.50
113.80
117.45
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
18
3.70
0.50
113.80
117.50
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
19
4.46
0.50
113.10
117.56
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
19
-2.63
0.40
106.40
103.77
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
19
4.60
0.50
113.10
117.70
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
19
-2.74
0.40
106.40
103.66
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
19
3.67
0.50
113.80
117.47
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
19
4.71
0.50
113.10
117.81
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
19
-2.62
0.40
106.40
103.78
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
19
4.59
0.50
113.10
117.69
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
19
-2.78
0.40
106.40
103.62
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
19
3.69
0.50
113.80
117.49
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
19
3.71
0.50
113.80
117.51
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
20
4.51
0.50
113.10
117.61
A
A
A
N7
C8
N9
G
G
G
1
1
1
N
20
-2.65
0.40
106.40
103.75
A
A
A
C8
N9
C4
G
G
G
1
1
1
N
20
4.60
0.50
113.10
117.70
A
A
A
N7
C8
N9
G
G
G
2
2
2
N
20
-2.59
0.40
106.40
103.81
A
A
A
C8
N9
C4
G
G
G
2
2
2
N
20
3.78
0.50
113.80
117.58
A
A
A
N7
C8
N9
A
A
A
6
6
6
N
20
4.61
0.50
113.10
117.71
A
A
A
N7
C8
N9
G
G
G
7
7
7
N
20
-2.56
0.40
106.40
103.84
A
A
A
C8
N9
C4
G
G
G
7
7
7
N
20
4.61
0.50
113.10
117.71
A
A
A
N7
C8
N9
G
G
G
10
10
10
N
20
-2.83
0.40
106.40
103.57
A
A
A
C8
N9
C4
G
G
G
10
10
10
N
20
3.77
0.50
113.80
117.57
A
A
A
N7
C8
N9
A
A
A
11
11
11
N
20
3.74
0.50
113.80
117.54
A
A
A
N7
C8
N9
A
A
A
12
12
12
N
STRUCTURE OF AGUU RNA TETRALOOP, NMR, 20 STRUCTURES
1
N
N
hydrog
WATSON-CRICK
A
G
1
A
N1
G
1
1_555
A
C
14
A
N3
C
14
1_555
hydrog
WATSON-CRICK
A
G
1
A
N2
G
1
1_555
A
C
14
A
O2
C
14
1_555
hydrog
WATSON-CRICK
A
G
1
A
O6
G
1
1_555
A
C
14
A
N4
C
14
1_555
hydrog
WATSON-CRICK
A
G
2
A
N1
G
2
1_555
A
C
13
A
N3
C
13
1_555
hydrog
WATSON-CRICK
A
G
2
A
N2
G
2
1_555
A
C
13
A
O2
C
13
1_555
hydrog
WATSON-CRICK
A
G
2
A
O6
G
2
1_555
A
C
13
A
N4
C
13
1_555
hydrog
WATSON-CRICK
A
U
3
A
N3
U
3
1_555
A
A
12
A
N1
A
12
1_555
hydrog
WATSON-CRICK
A
U
3
A
O4
U
3
1_555
A
A
12
A
N6
A
12
1_555
hydrog
WATSON-CRICK
A
U
4
A
N3
U
4
1_555
A
A
11
A
N1
A
11
1_555
hydrog
WATSON-CRICK
A
U
4
A
O4
U
4
1_555
A
A
11
A
N6
A
11
1_555
hydrog
WATSON-CRICK
A
C
5
A
N3
C
5
1_555
A
G
10
A
N1
G
10
1_555
hydrog
WATSON-CRICK
A
C
5
A
N4
C
5
1_555
A
G
10
A
O6
G
10
1_555
hydrog
WATSON-CRICK
A
C
5
A
O2
C
5
1_555
A
G
10
A
N2
G
10
1_555
RNA
Ribonucleic Acid, Tetraloop, RNA
1K4B
PDB
1
1K4B
1
14
1K4B
1
14
1K4B
A
1
1
14