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arXiv 2007.14922q-bio.GN
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DNA调节底物的结构表示可以通过关联功能序列变体来增强基于序列的算法

Structural representations of DNA regulatory substrates can enhance sequence-based algorithms by associating functional sequence variants

Jan Zrimec

摘要:

DNA的核苷酸序列表示可能不足以解析蛋白质-DNA结合位点和调控底物,例如参与基因表达和水平基因转移的那些。考虑到类序列表示在算法上非常有用,在这里,我们融合了超过60个目前可用的DNA物理化学和构象变量到紧凑的结构表示,可以编码单个DNA结合位点的整个调控区。我们发现,主要的结构成分反映了蛋白质-DNA相互作用的关键特性,可以浓缩到一个核苷酸位置上发现的信息量。最精确的结构表示将功能性DNA序列变体压缩30%至50%,因为每个实例编码数十至数千个序列。我们发现,结构距离函数之间的区别组的DNA基板更准确地比基于核苷酸序列的度量。由于这开辟了各种实现的可能性,我们开发和测试的距离为基础的比对算法,展示了使用的结构表示,以提高基于序列的算法的潜力。由于大多数当前生物信息学方法对核苷酸序列表示的偏差,有可能使用这些解决方案仍然可以实现相当大的性能提高。

英文摘要:

The nucleotide sequence representation of DNA can be inadequate for resolving protein-DNA binding sites and regulatory substrates, such as those involved in gene expression and horizontal gene transfer. Considering that sequence-like representations are algorithmically very useful, here we fused over 60 currently available DNA physicochemical and conformational variables into compact structural representations that can encode single DNA binding sites to whole regulatory regions. We find that the main structural components reflect key properties of protein-DNA interactions and can be condensed to the amount of information found in a single nucleotide position. The most accurate structural representations compress functional DNA sequence variants by 30% to 50%, as each instance encodes from tens to thousands of sequences. We show that a structural distance function discriminates among groups of DNA substrates more accurately than nucleotide sequence-based metrics. As this opens up a variety of implementation possibilities, we develop and test a distance-based alignment algorithm, demonstrating the potential of using the structural representations to enhance sequence-based algorithms. Due to the bias of most current bioinformatic methods to nucleotide sequence representations, it is possible that considerable performance increases might still be achievable with such solutions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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