2024-03-29T10:03:50Zhttps://repositori.uji.es/oai/requestoai:repositori.uji.es:10234/1636672022-10-19T11:07:41Zcom_10234_2507com_10234_9col_10234_6973
Repositori UJI
author
López Peris, María Lidón
author
Queralt-Martín, María
author
Alcaraz, Antonio
2016-10-19T10:54:27Z
2016-10-19T10:54:27Z
2016-06
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.
http://hdl.handle.net/10234/163667
http://dx.doi.org/10.1039/C6NR02638A
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
eng
© The Royal Society of Chemistry 2016
bacterial cells
stochastic systems
white noise
ions
Stochastic pumping of ions based on colored noise in bacterial channels under acidic stress
info:eu-repo/semantics/article
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