Document Detail


Spontaneous emergence of modularity in cellular networks.
MedLine Citation:
PMID:  17626003     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Modularity is known to be one of the most relevant characteristics of biological systems and appears to be present at multiple scales. Given its adaptive potential, it is often assumed to be the target of selective pressures. Under such interpretation, selection would be actively favouring the formation of modular structures, which would specialize in different functions. Here we show that, within the context of cellular networks, no such selection pressure is needed to obtain modularity. Instead, the intrinsic dynamics of network growth by duplication and diversification is able to generate it for free and explain the statistical features exhibited by small subgraphs. The implications for the evolution and evolvability of both biological and technological systems are discussed.
Authors:
Ricard V Solé; Sergi Valverde
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of the Royal Society, Interface / the Royal Society     Volume:  5     ISSN:  1742-5689     ISO Abbreviation:  J R Soc Interface     Publication Date:  2008 Jan 
Date Detail:
Created Date:  2007-11-22     Completed Date:  2008-03-04     Revised Date:  2013-06-06    
Medline Journal Info:
Nlm Unique ID:  101217269     Medline TA:  J R Soc Interface     Country:  England    
Other Details:
Languages:  eng     Pagination:  129-33     Citation Subset:  IM    
Affiliation:
Complex Systems Lab, ICREA-UPF, Dr Aiguader 88, 08003 Barcelona, Spain. ricard.sole@upf.edu
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MeSH Terms
Descriptor/Qualifier:
Biological Evolution*
Cell Communication / physiology*
Cell Physiological Phenomena*
Models, Biological*
Comments/Corrections

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