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Propagation of fluctuations in interaction networks governed by the law of mass action
Sergei Maslov, Kim Sneppen, Iaroslav Ispolatov
Using an example of physical interactions between proteins, we study how perturbations propagate in interconnected networks whose equilibrium state is governed by the law of mass a…
Efficient Degradation and Expression Prioritization with Small RNAs
Namiko Mitarai, Anna M. C. Andersson, Sandeep Krishna +2
We build a simple model for feedback systems involving small RNA (sRNA) molecules based on the iron metabolism system in the bacterium E. coli, and compare it with the correspondin…
Fear and its implications for stock markets
Ingve Simonsen, Peter Toke Heden Ahlgren, Mogens H. Jensen +2
The value of stocks, indices and other assets, are examples of stochastic processes with unpredictable dynamics. In this paper, we discuss asymmetries in short term price movements…
Genetic Regulation of Fluxes: Iron Homeostasis of Escherichia coli
Szabolcs Semsey, Anna M. C. Andersson, Sandeep Krishna +3
Iron is an essential trace-element for most organisms. However, because high concentration of free intracellular iron is cytotoxic, cells have developed complex regulatory networks…
Network Models of Phage-Bacteria Coevolution
Martin Rosvall, Ian B. Dodd, Sandeep Krishna +1
Bacteria and their bacteriophages are the most abundant, widespread and diverse groups of biological entities on the planet. In an attempt to understand how the interactions betwee…
Longevity of orders is related to the longevity of their constituent genera rather than genus richness
Stefan Bornholdt, Kim Sneppen, Hildegard Westphal
Longevity of a taxonomic group is an important issue in understanding the dynamics of evolution. In this respect a key observation is that genera, families or orders can each be as…