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: 1NBR  PDB ID: 1NBR 


Base Pair Morphology Step Parameters

CSV Format

Model NumberStep NumberStep NameShiftSlideRiseTiltRollTwistX-DisplacementY-DisplacementHelical RiseInclinationTipHelical Twist
13AA_A3G4:C26U27_AA0.063-2.1653.141-1.1096.64211.816-14.442-1.1521.67229.3474.913.594
110AA_A11A12:U19U20_AA-0.625-1.6753.005-11.567-1.63831.966-2.613-0.7193.118-2.85820.1833.981
111AA_A12C13:G17U19_AA0.578-1.162.9494.2882.38132.703-2.401-0.3622.914.199-7.56333.058
19AA_C10A11:U20G21_AA0.664-1.4234.147-1.48210.91734.286-4.175-1.3283.51417.9532.43735.962
11AA_G1G2:C28C29_AA0.213-1.582.76-5.6893.4530.056-3.525-1.3052.4876.55210.80530.767
12AA_G2A3:U27C28_AA-0.729-1.9623.4371.3183.26342.204-3.0581.1473.264.522-1.82642.343
14AA_G4U5:G25C26_AA-0.265-0.9463.1125.183-0.12554.638-1.0190.5823.079-0.136-5.63254.865
16AA_G6U8:A23C24_AA-2.759-0.9523.562-11.824-18.28357.4890.1252.0264.116-18.30411.83861.144
15AA_U5G6:C24G25_AA-0.405-1.1213.5980.51332.876.068-6.5010.775-0.44679.82-1.24633.414
17AA_U8U9:G22A23_AA0.455-1.3913.0093.664-0.53946.275-1.722-0.293.049-0.684-4.65346.415
18AA_U9C10:G21G22_AA0.449-2.7862.51312.5217.09911.663-11.0942.8930.82625.242-44.5218.507

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.