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: PR0232  PDB ID: 2I91 


Base Pair Morphology Step Parameters

CSV Format

Model NumberStep NumberStep NameShiftSlideRiseTiltRollTwistX-DisplacementY-DisplacementHelical RiseInclinationTipHelical Twist
15CC_A5C6:G3U4_DD-0.572-1.7883.0-2.08-0.74237.098-2.7130.6413.061-1.1653.26637.162
12CC_C2C3:G6G7_DD-1.137-1.9543.769-6.4535.91829.115-5.0750.7023.4811.44912.48530.376
13CC_C3U4:A5G6_DD0.691-1.5583.0893.14710.95125.363-5.521-0.7862.29923.488-6.75127.767
16CC_C6C7:G2G3_DD0.336-1.6383.2164.5951.14440.444-2.4790.0163.1881.648-6.61940.708
11CC_G1C2:G7C8_DD-0.026-1.973.5143.784-4.8828.224-2.730.9993.759-9.859-7.64528.878
14CC_U4A5:U4A5_DD-0.631-1.2393.393-7.37.37832.257-3.341-0.1163.10812.8712.73433.843
111EE_A5C6:G3U4_FF-0.157-1.7912.987-4.8543.28338.016-3.084-0.3012.8265.0037.39838.449
18EE_C2C3:G6G7_FF-1.414-2.1882.984.968-0.60320.507-5.7565.6692.629-1.663-13.69321.102
19EE_C3U4:A5G6_FF0.465-1.3683.233-3.7289.40332.291-3.759-1.3572.67316.4126.50633.798
112EE_C6C7:G2G3_FF-0.371-1.5263.2524.8670.97731.419-2.961.5483.1131.791-8.91831.799
17EE_G1C2:G7C8_FF-0.37-2.3823.509-1.623.55131.012-5.1180.3693.2376.6083.01631.25
110EE_U4A5:U4A5_FF-1.053-1.1843.366-0.6169.88433.284-3.4761.6742.92416.7991.04734.686

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.