A Portal for Three-dimensional Structural Information about Nucleic Acids
As of 17-Aug-2022 number of released structures: 12237
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NDB ID: 1K4A  PDB ID: 1K4A 


Base Pair Hydrogen Bonding Classification

CSV Format

Model NumberPair NumberPair NameLeontis / Westhof ClassificationSaenger Classification
16A_A6:A9_A60
15A_C5:G10_A119
11A_G1:C14_A119
12A_G2:C13_A119
13A_U3:A12_A120
14A_U4:A11_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)