A Portal for Three-dimensional Structural Information about Nucleic Acids
As of 30-Nov-2022 number of released structures: 12490
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NDB ID: NA2140  PDB ID: 4I2O 


Base Pair Hydrogen Bonding Classification

CSV Format

Model NumberPair NumberPair NameLeontis / Westhof ClassificationSaenger Classification
14W_DA6:DT23_X120
15W_DA7:DT22_X120
19W_DA11:DT18_X120
113W_DA15:DT14_X120
114W_DA16:DT13_X120
115W_DA17:DT12_X120
118W_DA20:DT9_X120
119W_DA21:DT8_X120
121W_DA23:DT6_X120
123W_DA25:DT4_X10
117W_DC19:DG10_X119
11W_DG3:DC26_X119
12W_DG4:DC25_X119
13W_DG5:DC24_X119
18W_DG10:DC19_X119
112W_DG14:DC15_X119
120W_DG22:DC7_X10
124W_DG26:DC3_X119
16W_DT8:DA21_X120
17W_DT9:DA20_X120
110W_DT12:DA17_X120
111W_DT13:DA16_X120
116W_DT18:DA11_X120
122W_DT24:DA5_X00

Leontis/Westhof Classification Legend

Base-Phosphate Interactions Legend

Base-Stacking Interactions Legend

Saenger Classification Legend

Correspondence of Leontis/Westhof names to Saenger numbering (table)