A Portal for Three-dimensional Structural Information about Nucleic Acids
As of 18-May-2022 number of released structures: 12082
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NDB ID: PR0232  PDB ID: 2I91 


Base Pair Hydrogen Bonding Classification

CSV Format

Model NumberPair NumberPair NameLeontis / Westhof ClassificationSaenger Classification
15C_A5:U4_D120
12C_C2:G7_D10
13C_C3:G6_D119
16C_C6:G3_D119
17C_C7:G2_D119
11C_G1:C8_D119
14C_U4:A5_D120
112E_A5:U4_F120
19E_C2:G7_F119
110E_C3:G6_F119
113E_C6:G3_F119
114E_C7:G2_F119
18E_G1:C8_F10
111E_U4:A5_F120

Leontis/Westhof Classification Legend

Base-Phosphate Interactions Legend

Base-Stacking Interactions Legend

Saenger Classification Legend

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