A Portal for Three-dimensional Structural Information about Nucleic Acids
As of 11-May-2022 number of released structures: 12077
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NDB ID: 1R2P  PDB ID: 1R2P 


Base Pair Morphology Step Parameters

CSV Format

Model NumberStep NumberStep NameShiftSlideRiseTiltRollTwistX-DisplacementY-DisplacementHelical RiseInclinationTipHelical Twist
12AA_A2G3:U32U33_AA-0.6-1.1594.3321.113-6.10925.522-0.3081.7294.454-13.574-2.47326.254
111AA_A13U14:G19U20_AA0.249-1.4472.8721.325-0.33341.973-1.988-0.2272.889-0.464-1.8541.994
14AA_C4C5:G30G31_AA-0.696-0.6723.9311.733-4.12132.722-0.3381.5793.943-7.272-3.05833.018
15AA_C5G6:C29G30_AA0.368-1.0184.676-3.801-16.11431.1831.929-1.4614.571-27.6686.52635.209
19AA_C11G12:C21G22_AA-0.124-1.0022.8851.5843.64424.976-3.1990.6782.78.358-3.63325.285
11AA_G1A2:U33C34_AA-0.442-1.523.716-0.84313.74533.627-4.4720.5862.90422.6171.38736.262
13AA_G3C4:G31U32_AA0.652-1.2793.745-0.936-2.61933.143-1.729-1.3213.812-4.5811.63833.256
16AA_G6U7:A28C29_AA1.044-1.1213.4761.685-0.46335.109-1.782-1.4593.535-0.768-2.79135.151
18AA_G10C11:G22C23_AA0.395-1.713.9-1.50415.32725.61-6.688-1.0992.47631.2363.06529.818
110AA_G12A13:U20C21_AA-0.578-1.6524.011-3.2955.83527.124-5.0690.2683.62612.2066.89327.925
17AA_U7A8:U27A28_AA-3.498-2.3055.6197.268-10.48437.426-1.2886.6545.309-15.787-10.94539.467
112AA_U14G15:A18G19_AA0.198-0.8663.95912.05332.5854.228-2.5030.4353.04632.321-11.95763.682

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.