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: 1A3M  PDB ID: 1A3M 


Base Pair Morphology Step Parameters

CSV Format

Model NumberStep NumberStep NameShiftSlideRiseTiltRollTwistX-DisplacementY-DisplacementHelical RiseInclinationTipHelical Twist
17AA_A7C8:G19A21_BB2.489-0.5694.184-13.518.95338.658-2.699-4.6512.67725.9718.49944.89
19AA_A9C10:G17U18_BB0.168-1.3083.4390.806-2.65229.916-1.941-0.1473.542-5.124-1.55730.042
13AA_C3G4:C24G25_BB-0.101-1.5424.071-3.67418.74331.459-5.35-0.4082.74931.2296.12236.678
16AA_C6A7:A21G22_BB-0.651-1.9723.3461.0236.67436.367-3.9811.162.93210.58-1.62236.967
18AA_C8A9:U18G19_BB0.001-1.0413.6370.58715.90335.781-3.5740.0732.93224.449-0.90239.054
110AA_C10C11:G16G17_BB0.353-1.1443.3250.753-0.05231.075-2.125-0.5113.334-0.097-1.40531.084
111AA_C11U12:G15G16_BB0.052-0.8813.343-0.6432.7107.771-0.58-0.0413.3281.6710.398107.796
11AA_G1G2:C26C27_BB-0.022-1.6093.7817.9277.57529.621-4.5081.6593.17314.218-14.87831.542
12AA_G2C3:G25C26_BB0.277-1.5453.4430.9861.44229.387-3.363-0.3253.3722.839-1.94129.438
14AA_G4U5:U23C24_BB-0.745-1.1623.57-2.719-0.11838.053-1.7620.7623.616-0.1814.16338.147
15AA_U5C6:G22U23_BB0.89-1.5353.1335.783-1.77735.508-2.233-0.6253.303-2.888-9.39936.004

The above values were obtained using first alternate conformation only and calculated by 3DNA program.
Xiang-Jun Lu & Wilma K. Olson (2003). '3DNA: a software package for the analysis, rebuilding and visualization of three-dimensional nucleic acid structures', Nucleic Acids Res.31(17), 5108-21.
Xiang-Jun Lu & Wilma K. Olson (2008). '3DNA: a versatile, integrated software system for the analysis, rebuilding and visualization of three-dimensional nucleic-acid structures', Nat Protoc.3(7), 1213-27.