Robust effects of Tsr-CheBp and CheA-CheYp affinity in bacterial chemotaxis.

Robust effects of Tsr-CheBp and CheA-CheYp affinity in bacterial chemotaxis. Research Abstract Details 

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Robust effects of Tsr-CheBp and CheA-CheYp affinity in bacterial chemotaxis. Abstract Text:

Yuri Matsuzaki,Shinichi Kikuchi,Masaru Tomita,Yuri Matsuzaki,Shinichi Kikuchi,Masaru Tomita,Yuri Matsuzaki,Shinichi Kikuchi,Masaru Tomita,

OBJECTIVE: Cell motility and chemotaxis play a role in the virulence of pathogenic bacteria, such as escape from host immune responses. Escherichia coli chemotaxis provides a well-characterized model system for the bacterial chemotaxis network. Two features of E. coli chemotaxis include signal amplification and robustly accurate adaptation. Recent simulation studies with models considering the effects of other receptors have suggested possible mechanisms for signal amplification. Although precise adaptation to aspartate has been explained by conventional kinetic models, the adaptation behavior of models incorporating the effects of other receptors remains unclear. METHODS: We concentrated on how receptor crosstalk affects minimization of adaptation error and compared models in which the contribution of other receptors varied. RESULTS: We demonstrated that the model is adaptable to attractant concentrations ranging from 0.1microM to 10mM with a decreased error rate (from 8% to 2%) when the kinetic constant of CheA and phosphorylated CheY dissociation is increased. CONCLUSION: The results suggest that accurate adaptation is maintained through control of both the interaction of cytoplasmic Che proteins and the activity of the receptor complex.

Robust effects of Tsr-CheBp and CheA-CheYp affinity in bacterial chemotaxis. Publishing Authors By Initials

Y Matsuzaki,S Kikuchi,M Tomita,Y Matsuzaki,S Kikuchi,M Tomita,Y Matsuzaki,S Kikuchi,M Tomita,

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Robust effects of Tsr-CheBp and CheA-CheYp affinity in bacterial chemotaxis. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Artificial intelligence in medicine

VOLUME: 41

Page Numbers: 145-50

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ISSN: 0933-3657

DAY: 12

MONTH: Oct

YEAR: 2007

Robust effects of Tsr-CheBp and CheA-CheYp affinity in bacterial chemotaxis. Information

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LANGUAGE: eng

NlmUniqueID: 8915031

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Grant and Affiliation Information for Robust effects of Tsr-CheBp and CheA-CheYp affinity in bacterial chemotaxis.

AFFILIATION: Institute for Advanced Biosciences, Keio University, Fujisawa, Kanagawa 252-8520, Japan.

Country: Netherlands

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MEDLINETA: Artif Intell Med

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