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: PTR009  PDB ID: 1QRS 


Base Pair Hydrogen Bonding Classification

CSV Format

Model NumberPair NumberPair NameLeontis / Westhof ClassificationSaenger Classification
16B_A7:U66_B120
125B_A13:A45_B21
126B_A14:U8_B424
114B_A37:U33_B00
19B_A51:U63_B120
123B_C11:G24_B119
124B_C12:G23_B119
117B_C40:G30_B119
118B_C41:G29_B119
121B_C44:A26_B10
17B_C49:G65_B119
11B_G2:C71_B119
12B_G3:C70_B119
13B_G4:C69_B119
14B_G5:C68_B119
122B_G10:C25_B119
127B_G15:C48_B222
128B_G19:C56_B119
119B_G42:C28_B119
120B_G43:C27_B119
18B_G50:C64_B119
110B_G52:C62_B119
111B_G53:C61_B119
15B_U6:A67_B120
115B_U38:U32_B00
116B_U39:A31_B120
112B_U54:A58_B424
113B_U55:G18_B20

Leontis/Westhof Classification Legend

Base-Phosphate Interactions Legend

Base-Stacking Interactions Legend

Saenger Classification Legend

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