A Portal for Three-dimensional Structural Information about Nucleic Acids
As of 11-May-2022 number of released structures: 12077
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NDB ID: 2A9X  PDB ID: 2A9X 


Base Pair Morphology Step Parameters

CSV Format

Model NumberStep NumberStep NameShiftSlideRiseTiltRollTwistX-DisplacementY-DisplacementHelical RiseInclinationTipHelical Twist
1822_A13G14:C23U24_220.457-1.3612.855-4.02424.90918.345-5.707-1.3640.55853.8438.69731.108
1322_C6U7:A28G29_22-0.141-1.3483.045-4.33422.51224.227-5.316-0.3231.35343.2238.32133.236
1522_C8G9:C26G27_22-0.356-0.743.038-1.467-16.57333.6241.0020.3653.072-26.7142.36437.408
11022_C15U16:A21G22_220.602-0.472.48313.5780.03638.831-0.6730.3112.5450.052-19.70441.05
1122_G4G5:C30C31_22-0.384-0.9552.551-8.38614.09530.635-3.201-0.3071.97424.59114.63134.656
1222_G5C6:G29C30_220.242-0.5373.5095.8979.97638.264-2.0050.3663.27414.809-8.75439.917
1622_G9G11:C25C26_220.14-1.9543.3657.288.66530.19-5.00.9892.67815.948-13.39932.195
1722_G11A13:U24C25_22-0.301-1.3543.425-9.068-5.16825.968-1.449-1.7543.528-10.95319.2227.953
1922_G14C15:G22C23_220.201-1.4293.5670.1525.42635.095-3.184-0.3063.3178.932-0.25135.5
1422_U7C8:G27A28_22-0.73-0.9894.043-1.1759.03532.045-3.5361.0393.6615.9672.07733.283

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.