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首页> 外文期刊>Journal of Bioinformatics and Computational Biology >CHARACTERIZING THE SPACE OF INTERATOMICDISTANCE DISTRIBUTION FUNCTIONS CONSISTENTWITH SOLUTION SCATTERING DATA
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CHARACTERIZING THE SPACE OF INTERATOMICDISTANCE DISTRIBUTION FUNCTIONS CONSISTENTWITH SOLUTION SCATTERING DATA

机译:表征由溶液散射数据组成的原子间分布函数的空间

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摘要

Scattering of neutrons and X-rays from molecules in solution offers alternativeapproaches to the study of a wide range of macromolecular structures in their solu-tion state without crystallization. We study one part of the problem of elucidatingthree-dimensional structure from solution scattering data, determining the distributionof interatomic distances, P(r), where r is the distance between two atoms in the proteinmolecule. This problem is known to be ill-conditioned: for a single observed diffractionpattern, there may be many consistent distance distribution functions, and there is a riskof overfitting the observed scattering data. We propose a new approach to avoiding thisproblem: accepting the validity of multiple alternative P(r) curves rather than seekinga single "best."
机译:溶液中分子对中子和X射线的散射为研究各种大分子结构而不溶解而提供的替代方法。我们研究了从溶液散射数据中阐明三维结构,确定原子间距离P(r)的分布的问题的一部分,其中r是蛋白质分子中两个原子之间的距离。已知此问题是病态的:对于单个观察到的衍射图样,可能存在许多一致的距离分布函数,并且存在过拟合观察到的散射数据的风险。我们提出了一种避免此问题的新方法:接受多个替代P(r)曲线的有效性,而不是寻求单个“最佳”。

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