Bow-tie topological features of metabolic networks and the functional significance

Details Bow-tie topological features of metabolic networks and the functional significance Bow-tie topological features of metabolic networks and the functional significance

2006-11-04

arxiv.org/abs/q-bio/0611013v1

Chinese Science Bulletin 2007, 52:1036 - 1045

Biology

Quantitative Biology

Molecular Networks

15 pages, 5 figures

Scientific paper

Exploring the structural topology of genome-based large-scale metabolic network is essential for investigating possible relations between structure and functionality. Visualization would be helpful for obtaining immediate information about structural organization. In this work, metabolic networks of 75 organisms were investigated from a topological point of view. A spread bow-tie model was proposed to give a clear visualization of the bow-tie structure for metabolic networks. The revealed topological pattern helps to design more efficient algorithm specifically for metabolic networks. This coarse-grained graph also visualizes the vulnerable connections in the network, and thus could have important implication for disease studies and drug target identifications. In addition, analysis on the reciprocal links and main cores in the GSC part of bow-tie also reveals that the bow-tie structure of metabolic networks has its own intrinsic and significant features which are significantly different from those of random networks.

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