Reply to ''Comment on 'Regularizing Capacity of Metabolic Networks' ''

Details Reply to ''Comment on 'Regularizing Capacity of Metabolic Networks' '' Reply to ''Comment on 'Regularizing Capacity of Metabolic Networks' ''

2007-09-06

arxiv.org/abs/0709.0823v1

Biology

Quantitative Biology

Molecular Networks

2 pages, 2 figures

Scientific paper

10.1103/PhysRevE.77.023902

In a recent paper [C. Marr, M. Mueller-Linow, and M.-T. Huett, Phys. Rev. E 75, 041917 (2007)] we discuss the pronounced potential of real metabolic network topologies, compared to randomized counterparts, to regularize complex binary dynamics. In their comment [P. Holme and M. Huss, arXiv:0705.4084v1], Holme and Huss criticize our approach and repeat our study with more realistic dynamics, where stylized reaction kinetics are implemented on sets of pairwise reactions. The authors find no dynamic difference between the reaction sets recreated from the metabolic networks and randomized counterparts. We reproduce the author's observation and find that their algorithm leads to a dynamical fragmentation and thus eliminates the topological information contained in the graphs. Hence, their approach cannot rule out a connection between the topology of metabolic networks and the ubiquity of steady states.

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