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: 2A9L  PDB ID: 2A9L 


Base Pair Hydrogen Bonding Classification

CSV Format

Model NumberPair NumberPair NameLeontis / Westhof ClassificationSaenger Classification
16A_A6:U33_A120
17A_C7:G29_A119
19A_C9:G27_A119
110A_C10:G26_A119
114A_C17:G22_A119
11A_G1:C38_A119
12A_G2:C37_A119
13A_G3:C36_A119
15A_G5:C34_A119
111A_G14:C25_A119
112A_G15:C24_A119
115A_G18:A21_A411
14A_U4:A35_A120
18A_U8:A28_A120
113A_U16:A23_A120

Leontis/Westhof Classification Legend

Base-Phosphate Interactions Legend

Base-Stacking Interactions Legend

Saenger Classification Legend

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