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A Portal for Three-dimensional Structural Information about Nucleic Acids
As of 31-May-2023 number of released structures: 12820
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NDB ID:
2M21
PDB ID:
2M21
 
Base Pair Morphology Step Parameters
CSV Format
Model Number
Step Number
Step Name
Shift
Slide
Rise
Tilt
Roll
Twist
X-Displacement
Y-Displacement
Helical Rise
Inclination
Tip
Helical Twist
1
5
AA_A5U6:A16U17_AA
0.05
-1.083
4.053
-0.916
9.249
29.083
-4.252
-0.312
3.546
17.851
1.768
30.501
1
7
AA_A7C8:U14U15_AA
-1.244
-1.236
3.889
0.244
16.75
27.035
-5.617
2.325
2.676
32.204
-0.468
31.722
1
3
AA_C3G4:C18G19_AA
-1.27
-0.425
3.562
-5.745
12.756
33.043
-2.713
1.156
3.346
21.28
9.584
35.806
1
1
AA_G1G2:C20C21_AA
-1.143
-0.537
3.437
-4.776
8.679
35.592
-2.088
1.124
3.34
13.871
7.633
36.902
1
2
AA_G2C3:G19C20_AA
0.183
-0.866
4.353
-0.09
-1.33
29.614
-1.317
-0.383
4.386
-2.601
0.175
29.643
1
4
AA_G4A5:U17C18_AA
-0.981
-0.425
4.028
-2.662
17.652
35.645
-3.132
1.065
3.509
26.86
4.05
39.735
1
6
AA_U6A7:U15A16_AA
-1.219
-0.714
3.423
0.39
24.295
38.432
-3.092
1.619
2.551
33.184
-0.533
45.222
The above values were obtained using first alternate conformation only and calculated by 3DNA program.
Xiang-Jun Lu & Wilma K. Olson (2003). '3DNA: a software package for the analysis, rebuilding and visualization of three-dimensional nucleic acid structures',
Nucleic Acids Res
.
31(17)
, 5108-21. Xiang-Jun Lu & Wilma K. Olson (2008). '3DNA: a versatile, integrated software system for the analysis, rebuilding and visualization of three-dimensional nucleic-acid structures',
Nat Protoc
.
3(7)
, 1213-27.