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Process-based network decomposition reveals backbone motif structure

delete2010-05-24
delete45
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OA
AI
G
Guanyu Wang
D
Du, Chenghang
陈豪 封面图
陈豪 (Hao Chen)
R
Rahul Simha
Y
Yongwu Rong
X
Xiao Yi
C
Chen Zeng *
DOI:10.1073/pnas.0914180107delete
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摘要

摘要

En 中文
A central challenge in systems biology today is to understand the network of interactions among biomolecules and, especially, the organizing principles underlying such networks. Recent analysis of known networks has identified small motifs that occur ubiquitously, suggesting that larger networks might be constructed in the manner of electronic circuits by assembling groups of these smaller modules. Using a unique process-based approach to analyzing such networks, we show for two cell-cycle networks that each of these networks contains a giant backbone motif spanning all the network nodes that provides the main functional response. The backbone is in fact the smallest network capable of providing the desired functionality. Furthermore, the remaining edges in the network form smaller motifs whose role is to confer stability properties rather than provide function. The process-based approach used in the above analysis has additional benefits: It is scalable, analytic ( resulting in a single analyzable expression that describes the behavior), and computationally efficient (all possible minimal networks for a biological process can be identified and enumerated).
Keyword:
biological network
Boolean network
modulization and motif
process centric analysis
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期刊

P
Proceedings of the National Academy of Sciences of the United States of America
IF:
9.1
论文数:
10.8W
被引数:
73.5W

机构

G
George Washington University
学者数:
1.6W
论文数: 1.4W
被引数: 1.7W
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