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Naslov:On the origin and characteristics of noise-induced Lévy Walks of E. Coli
Avtorji:Matthäus, Franziska (Avtor)
Mommer, Mario (Avtor)
Curk, Tine (Avtor)
Dobnikar, Jure (Avtor)
Datoteke:.pdf PLoS_ONE_2011_Matthäus_et_al._On_the_Origin_and_Characteristics_of_Noise-Induced_Levy_Walks_of_E._Coli.PDF (288,52 KB)
MD5: D4C4E2A386EBD06FCDF85B7E5236474F
 
URL http://dx.plos.org/10.1371/journal.pone.0018623
 
Jezik:Angleški jezik
Vrsta gradiva:Znanstveno delo (r2)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FNM - Fakulteta za naravoslovje in matematiko
Opis:Lévy walks as a random search strategy have recently attracted a lot of attention, and have been described in many animal species. However, very little is known about one of the most important issues, namely how Lévy walks are generated by biological organisms. We study a model of the chemotaxis signaling pathway of E. coli, and demonstrate that stochastic fluctuations and the specific design of the signaling pathway in concert enable the generation of Lévy walks. We show that Lévy walks result from the superposition of an ensemble of exponential distributions, which occurs due to the shifts in the internal enzyme concentrations following the stochastic fluctuations. With our approach we derive the power-law analytically from a model of the chemotaxis signaling pathway, and obtain a power-law exponent , which coincides with experimental results. This work provides a means to confirm Lévy walks as natural phenomenon by providing understanding on the process through which they emerge. Furthermore, our results give novel insights into the design aspects of biological systems that are capable of translating additive noise on the microscopic scale into beneficial macroscopic behavior.
Ključne besede:Lévy walks, E. coli
Leto izida:2011
Št. strani:str. 1-8
Številčenje:št. 4, Letn. 6
ISSN:1932-6203
UDK:577
COBISS_ID:25045031 Novo okno
DOI:10.1371/journal.pone.0018623 Novo okno
ISSN pri članku:1932-6203
NUK URN:URN:SI:UM:DK:NRSQKOIW
Število ogledov:544
Število prenosov:257
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
Področja:Ostalo
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Gradivo je del revije

Naslov:PloS one
Založnik:Public Library of Science
ISSN:1932-6203
COBISS.SI-ID:2005896 Novo okno

Gradivo je financirano iz projekta

Financer:EC - European Commission
Program financ.:FP7
Številka projekta:234810
Naslov:Physics of Complex Colloids: Equilibrium and Driven
Akronim:COMPLOIDS

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:19.06.2017

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:Lévyjevi pobegi, E. coli


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