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: PR0047  PDB ID: 1I6U 


Base Pair Morphology Step Parameters

CSV Format

Model NumberStep NumberStep NameShiftSlideRiseTiltRollTwistX-DisplacementY-DisplacementHelical RiseInclinationTipHelical Twist
110CC_A11G12:C27U28_CC0.086-2.0043.7435.4829.90930.733-5.3690.8482.94517.95-9.93132.706
14CC_C4C5:G33G34_CC-0.024-2.1973.218-3.4257.94429.816-5.484-0.5492.54915.0446.48731.019
15CC_C5C6:G32G33_CC-0.668-2.1163.0930.3693.43528.904-4.8921.4022.826.851-0.73629.105
16CC_C6G7:C31G32_CC-0.132-1.7643.415-2.0819.55527.409-5.523-0.1742.66519.3994.22529.069
114CC_C14U15:A22G23_CC-0.263-1.5793.384-1.9035.34533.328-3.580.1443.119.2363.28833.794
116CC_C16U17:G20G21_CC-0.954-0.7813.3988.3336.84597.033-0.6360.7773.2844.558-5.54997.48
11CC_G1G2:C36C37_CC0.04-1.9113.115-0.2754.09129.822-4.444-0.1292.8337.9010.53130.096
12CC_G2G3:C35C36_CC0.719-1.9863.1171.9172.58730.805-4.187-1.0012.9824.854-3.59630.969
13CC_G3C4:G34C35_CC-1.061-2.1683.029-1.2614.63730.038-4.9531.82.7138.8752.41430.411
17CC_G7G8:C30C31_CC0.597-1.9323.422-0.0498.31132.768-4.637-1.0352.8614.4440.08433.777
18CC_G8U9:G29C30_CC0.024-1.6943.4932.9296.42543.434-2.8890.2543.2188.613-3.92743.977
111CC_G12U25:A26C27_CC-0.3072.236-2.128155.92262.075-179.514-1.116-0.157-2.13-31.03777.961-179.948
19CC_U9A11:U28G29_CC-2.523-1.6012.8259.9487.22643.937-2.5433.9131.9659.44-12.99645.542
113CC_U13C14:G23A24_CC-0.303-1.5063.37-2.9127.93932.935-3.8260.0612.95313.7245.03333.974
115CC_U15C16:G21A22_CC0.523-1.3863.1155.3762.84433.561-2.793-0.0833.0354.875-9.21634.092
112CC_U25U13:A24A26_CC1.889-2.3680.728148.585-32.48959.083-1.015-0.072.398-17.733-81.1155.782
126DD_A11G12:C27U28_DD0.375-2.0033.6963.00610.49931.327-5.352-0.1322.91418.744-5.36733.131
120DD_C4C5:G33G34_DD-0.03-2.0093.247-2.9484.83129.513-4.814-0.5152.8789.3755.72130.039
121DD_C5C6:G32G33_DD-0.528-2.0183.073-2.3443.98633.372-4.0720.5652.856.8994.05733.682
122DD_C6G7:C31G32_DD-0.054-1.9943.0230.2057.98728.672-5.2960.1422.39215.746-0.40529.742
130DD_C14U15:A22G23_DD-0.731-2.0823.161-2.3127.10327.487-5.6931.0112.60414.6094.75528.465
132DD_C16U17:G20G21_DD-1.394-0.8843.4589.0255.22795.544-0.6891.1013.3113.521-6.0895.974
117DD_G1G2:C36C37_DD-0.015-2.0772.938-4.6833.46828.28-4.833-0.8672.6387.0049.45828.862
118DD_G2G3:C35C36_DD-0.005-1.8633.1553.4829.13432.221-4.5470.5142.53316.004-6.10133.634
119DD_G3C4:G34C35_DD0.102-1.4283.1030.3635.92833.023-3.363-0.1232.81310.325-0.63333.538
123DD_G7G8:C30C31_DD0.204-1.8743.6531.22911.76632.905-4.948-0.152.84219.984-2.08734.911
124DD_G8U9:G29C30_DD-0.234-1.5073.3361.3921.10643.274-2.1520.4553.291.499-1.88743.309
127DD_G12U25:A26C27_DD0.1732.269-2.22156.89959.677-157.822-1.056-0.121-2.364-29.87878.554-177.67
125DD_U9A11:U28G29_DD-2.692-1.5683.14312.93210.0744.388-2.6234.2151.94912.822-16.46747.173
129DD_U13C14:G23A24_DD-0.479-1.8023.529-7.45710.66136.061-4.116-0.2252.93816.57111.59138.263
131DD_U15C16:G21A22_DD0.508-1.7883.457-4.0855.36135.369-3.664-1.4093.0868.7266.64835.985
128DD_U25U13:A24A26_DD1.981-2.240.778153.302-34.28954.769-0.919-0.0262.505-18.483-82.633159.686

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.