A Portal for Three-dimensional Structural Information about Nucleic Acids
As of 22-Jun-2022 number of released structures: 12128
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NDB ID: 4X4T  PDB ID: 4X4T 


Base Pair Hydrogen Bonding Classification

CSV Format

Model NumberPair NumberPair NameLeontis / Westhof ClassificationSaenger Classification
113B_5BU13:A17_B00
110B_A10:5BU22_B120
13B_C3:G32_B119
14B_C4:G28_B119
16B_C6:G26_B119
19B_C9:G23_B119
114B_C15:G2_I119
11B_G1:C31_B119
12B_G2:C33_B119
15B_G5:C27_B119
17B_G7:C25_B119
18B_G8:C24_B119
111B_G11:C21_B119
112B_G12:C20_B119
124D_A10:5BU22_D120
117D_C3:G32_D119
118D_C4:G28_D10
120D_C6:G26_D10
123D_C9:G23_D119
127D_C15:G2_H119
115D_G1:C34_D119
116D_G2:C33_D119
119D_G5:C27_D10
121D_G7:C25_D119
122D_G8:C24_D119
125D_G11:C21_D119
126D_G12:C20_D119
128D_G16:C1_H119
131G_C4:G28_G119
133G_C6:G26_G119
136G_C9:G23_G119
129G_G1:C31_G119
130G_G2:5BU30_G00
132G_G5:C27_G119
134G_G7:C25_G119
135G_G8:C24_G119

Leontis/Westhof Classification Legend

Base-Phosphate Interactions Legend

Base-Stacking Interactions Legend

Saenger Classification Legend

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