Stochastic pumping of ions based on colored noise in bacterial channels under acidic stress
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Stochastic pumping of ions based on colored noise in bacterial channels under acidic stressData de publicació
2016-06Editor
Royal Society of ChemistryCita bibliogràfica
LÓPEZ, M. Lidón; QUERALT-MARTÍN, María; ALCARAZ, Antonio. Stochastic pumping of ions based on colored noise in bacterial channels under acidic stress. Nanoscale, 2016, vol. 8, no 27, p. 13422-13428.Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://pubs.rsc.org/-/content/articlehtml/2016/nr/c6nr02638aVersió
info:eu-repo/semantics/acceptedVersionParaules clau / Matèries
Resum
Fluctuation-driven ion transport can be obtained in bacterial channels with the aid of different types of colored noise including the biologically relevant Lorentzian one. Using the electrochemical rectification of ... [+]
Fluctuation-driven ion transport can be obtained in bacterial channels with the aid of different types of colored noise including the biologically relevant Lorentzian one. Using the electrochemical rectification of the channel current as a ratchet mechanism we observe transport of ions up to their concentration gradient under conditions similar to that met in vivo, namely moderate pH gradients and asymmetrically charged lipid membranes. We find that depending on the direction of the concentration gradient the channel can pump either cations or anions from the diluted side to the concentrated one. We discuss the possible relevance of this phenomenon for the pH homeostasis of bacterial cells [-]
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Nanoscale Volume 8, Issue 27, July 2016Drets d'accés
© The Royal Society of Chemistry 2016
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info:eu-repo/semantics/openAccess
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info:eu-repo/semantics/openAccess
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