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: 1I4B  PDB ID: 1I4B 


Base Pair Morphology Step Parameters

CSV Format

Model NumberStep NumberStep NameShiftSlideRiseTiltRollTwistX-DisplacementY-DisplacementHelical RiseInclinationTipHelical Twist
11AA_G1G2:C12C13_AA-1.342-0.9913.102-0.216-1.04834.575-1.5132.2253.138-1.7630.36434.591
12AA_G2U3:A11C12_AA0.186-0.4432.8932.743-1.23329.636-0.6330.1482.913-2.403-5.34529.784
14AA_G4C5:G9C10_AA1.735-0.1412.8577.9949.72537.034-1.295-1.7053.02414.796-12.16239.044
13AA_U3G4:C10A11_AA-0.322-1.23.374-3.29930.92630.222-4.3950.1441.57846.6044.97143.105

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.