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arXiv 1208.1853q-bio.MN
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利用基因调控信息加速基元通量模式的计算

Utilizing gene regulatory information to speed up the calculation of elementary flux modes

Christian Jungreuthmayer, David E. Ruckerbauer, Jürgen Zanghellini

摘要:

尽管近年来取得了显著的进展,大型甚至基因组规模的代谢网络的基本通量模式的完整集合的计算仍然是不可能的。我们引入了一种新的方法,通过将转录调控信息引入到代谢网络的分析中来加快基本通量模式的计算。考虑到基因调控显着减少了解决方案的空间,并允许所提出的算法不断消除生物不可行的模式在计算过程的早期阶段。因此,计算成本,如运行时间,内存使用和磁盘空间大大减少。因此,使用所提出的模式消除算法将可以通过基本通量模式研究的代谢网络的大小推到新的极限。

英文摘要:

Despite the significant progress made in recent years, the computation of the complete set of elementary flux modes of large or even genome-scale metabolic networks is still impossible. We introduce a novel approach to speed up the calculation of elementary flux modes by including transcriptional regulatory information into the analysis of metabolic network. Taking into account gene regulation dramatically reduces the solution space and allows the presented algorithm to constantly eliminate biologically infeasible modes at an early stage of the computation procedure. Thereby, the computational costs, such as runtime, memory usage and disk space are considerably reduced. Consequently, using the presented mode elimination algorithm pushes the size of metabolic networks that can be studied by elementary flux modes to new limits.

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