随机取向超螺旋的X射线散射。环状超螺旋DNA。
X-ray scattering from randomly oriented superhelices. Circular superhelical DNA.
作者信息
Benham C J, Brady G W, Fein D B
出版信息
Biophys J. 1980 Mar;29(3):351-66. doi: 10.1016/S0006-3495(80)85139-3.
Abstract
The scattering functions of randomly oriented filaments of finite length exhibiting two orders of helicity have been calculated. It is shown to a good approximation that each order scatters as if present alone as a first order helix of the same contour length and pitch angle. These results show that the measured scattering pattern from dissolved superhelical DNA molecules is consistent with the scattering pattern calculated for a coiled coil geometry.
摘要
已计算出具有两种螺旋度的有限长度随机取向细丝的散射函数。结果表明，在很好的近似程度上，每个螺旋度的散射就好像它单独作为具有相同轮廓长度和螺距角的一阶螺旋存在时那样。这些结果表明，从溶解的超螺旋DNA分子测得的散射图案与为卷曲螺旋几何结构计算出的散射图案一致。
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Molecular structure of nucleic acids; a structure for deoxyribose nucleic acid.核酸的分子结构；脱氧核糖核酸的一种结构。
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Partial alteration of secondary structure in native superhelical DNA.天然超螺旋DNA二级结构的部分改变。
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The writhing number of a space curve.空间曲线的扭结数
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Further analysis of the altered secondary structure of superhelical DNA. Sensitivity to methylmercuric hydroxide a chemical probe for unpaired bases.超螺旋DNA二级结构改变的进一步分析。对氢氧化甲基汞的敏感性——一种针对未配对碱基的化学探针。
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Metallointercalation reagents. 2-hydroxyethanethiolato(2,2',2'-terpyridine)-platinum(II) monocation binds strongly to DNA by intercalation.金属嵌入试剂。2-羟基乙硫醇基（2,2',2'-三联吡啶）-铂（II）单阳离子通过嵌入作用与DNA紧密结合。
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