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: 2I7E  PDB ID: 2I7E 


Base Pair Morphology Step Parameters

CSV Format

Model NumberStep NumberStep NameShiftSlideRiseTiltRollTwistX-DisplacementY-DisplacementHelical RiseInclinationTipHelical Twist
14AA_A4U5:G39U40_AA0.929-0.263.8082.1947.20243.756-1.123-0.9933.7629.578-2.91944.368
17AA_A6G8:C35U36_AA3.139-0.9623.367-13.3969.32170.961-1.101-3.0662.6927.92611.3972.573
110AA_A10A11:U32U33_AA0.013-1.0444.083-1.741-7.04624.2960.26-0.6834.202-16.2834.02325.341
111AA_A11G12:C31U32_AA-0.125-0.4964.020.83928.08336.183-3.6110.252.92938.843-1.1645.52
113AA_A13A14:U29U30_AA-0.211-0.5394.042-1.1895.39530.307-2.3040.1133.89510.2122.25230.795
114AA_A14C15:G28U29_AA-0.631-0.9653.6233.77917.00425.061-5.2821.9682.38634.387-7.64230.44
126AB_A21G51:C78A49_BB4.696-2.3263.803-31.5722.95230.078-3.545-6.682-1.64231.63243.50948.916
16AA_A37A6:U36A38_AA-0.051-3.362-0.58161.391-3.85932.975-1.708-0.245-0.139-2.088-87.32162.207
115AA_C15C16:G27G28_AA1.603-0.1263.2118.55233.98834.131-2.896-1.262.4845.672-11.49248.544
116AA_C16G17:U26G27_AA-2.008-0.6633.631-9.25814.66422.367-5.3571.5933.19732.28220.3828.235
11AA_G1G2:C42U43_AA0.005-1.3513.84-1.088-7.21436.844-0.957-0.1814.022-11.2781.70137.535
12AA_G2G3:C41C42_AA-0.656-0.8763.791-0.9714.3835.114-2.180.9153.6757.2241.60235.39
13AA_G3A4:U40C41_AA-0.355-0.0313.75-3.5415.33436.228-0.8860.0083.7258.4955.6436.77
18AA_G8G9:C34C35_AA1.115-1.7273.342-3.7966.98734.559-3.815-2.3642.81611.5726.28735.435
19AA_G9A10:U33C34_AA-1.117-2.0263.9663.8077.58627.84-5.8823.1513.13815.322-7.68829.081
112AA_G12A13:U30C31_AA-0.413-0.7633.133-2.8113.90233.807-2.9810.3022.65122.7054.58936.582
117AA_G17G18:U25U26_AA0.292-1.1953.935-5.5086.35128.747-3.836-1.8863.48212.45910.80529.926
118AA_G18G19:C24U25_AA-0.61-1.0024.1151.3516.68535.329-2.7931.2253.84310.89-2.235.961
119AA_G19G20:A23C24_AA-0.5780.2122.876-1.34619.03343.238-1.1450.6242.75124.4591.7347.075
15AA_U5A37:A38G39_AA-1.1593.204-1.881157.09471.01152.0831.923-0.123-0.59136.383-80.488173.171
123BB_A47U48:G82U83_BB0.736-0.293.533.15115.86945.319-1.708-0.6373.319.863-3.94447.977
129BB_A53A54:U75U76_BB-0.187-0.9583.9942.2111.66632.697-2.0420.7913.9212.953-3.91932.811
130BB_A54G55:C74U75_BB-0.578-0.513.496-1.31318.58228.048-4.0380.7782.67934.0052.40333.567
132BB_A56A57:U72U73_BB-0.121-1.163.9460.33913.72627.196-5.3140.3073.02227.107-0.6730.406
133BB_A57C58:G71U72_BB0.004-0.9353.7620.76815.87828.048-4.7620.1422.8429.914-1.44632.161
125BA_A80A21:A49A81_BB-1.3474.469-1.413-158.81750.915-104.908-2.026-0.007-2.729-25.873-80.704-171.954
134BB_C58C59:G70G71_BB2.299-0.4652.8149.35229.33833.379-3.003-2.2332.27641.728-13.30245.114
135BB_C59G60:U69G70_BB-1.906-0.9473.48-7.91410.23523.672-4.9161.8643.26322.8917.69826.932
120BB_G44G45:C85U86_BB0.361-1.8723.492-3.5696.63825.183-5.886-1.7452.83614.8067.96126.269
121BB_G45G46:C84C85_BB0.176-0.5434.6831.071-12.01231.9231.875-0.0514.588-20.929-1.86634.07
122BB_G46A47:U83C84_BB-0.099-0.7944.158-1.5344.03432.433-2.285-0.1584.0337.1822.73132.712
127BB_G51G52:C77C78_BB0.407-2.0273.269-0.8596.53932.415-4.599-0.8512.80711.5641.51933.061
128BB_G52A53:U76C77_BB-0.615-1.5293.833-0.25910.61730.529-4.821.0573.14419.4380.47432.282
131BB_G55A56:U73C74_BB-0.409-0.9553.471-3.7146.25332.524-2.7510.0683.26210.9946.5333.306
136BB_G60G61:U68U69_BB-0.123-1.2663.892-4.8775.25326.733-4.123-1.1113.54911.1110.31427.661
137BB_G61G62:C67U68_BB-0.244-0.7784.2731.24911.65435.655-3.1540.5883.8318.429-1.97437.473
138BB_G62G63:A66C67_BB-0.707-0.062.774-3.7617.76546.438-1.1930.6042.63421.5874.56949.678
124BB_U48A80:A81G82_BB-0.053-4.764-0.706-157.787-79.123-161.0462.3490.039-1.05539.572-78.915-179.426

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.