A Portal for Three-dimensional Structural Information about Nucleic Acids
As of 17-Aug-2022 number of released structures: 12237
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NDB ID: 1K4A  PDB ID: 1K4A 


Base Pair Morphology Step Parameters

CSV Format

Model NumberStep NumberStep NameShiftSlideRiseTiltRollTwistX-DisplacementY-DisplacementHelical RiseInclinationTipHelical Twist
15AA_C5A6:A9G10_AA-0.636-0.8293.439-4.07818.69455.343-1.8610.4323.07519.4894.25158.309
11AA_G1G2:C13C14_AA-0.992-1.2023.987-2.5451.85930.221-2.7491.2693.9763.5534.86530.381
12AA_G2U3:A12C13_AA-0.146-1.3693.592-2.09314.14232.586-4.355-0.0732.78323.8263.52735.506
13AA_U3U4:A11A12_AA1.135-1.5823.894-0.2735.02430.739-4.052-2.1743.5869.3980.51131.139
14AA_U4C5:G10A11_AA-0.147-1.9783.2010.62315.90226.181-6.3280.3791.73631.657-1.2430.566

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.