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Electrical communication of cytochrome enriched Escherichia coli JM109 cells with graphite electrodes

Alferov, Sergey LU ; Coman, Vasile LU ; Gustavsson, Tobias LU ; Reshetilov, Anatoly; von Wachenfeldt, Claes LU ; Hägerhäll, Cecilia LU and Gorton, Lo LU (2009) 59th Annual Meeting of the International-Society-of-Electrochemistry In Electrochimica Acta 54(22). p.4979-4984
Abstract
In the present study three different strains of Escherichia coli (JM 109 - a native "wild type" strain, JM 109/pBSD 1300 - a strain overproducing the membrane anchor domain of Bacillus subtilis succinate-quinone reductase, SQR, a protein that contains two transmembraneously arranged heme groups and JM109/pLUV 1900 - a strain overproducing cytochrome c(550) from B. subtilis, a protein where the cytochrome domain is anchored to the membrane with a transmembrane helix) were immobilised on the surface of a spectrographic graphite electrode and tested for electrical communication using mediators. Such compounds as ferricyanide, 2,6-dichlorophenolindophenol (DCPIP) and ubiquinone (Q(0)) were used as soluble mediators and two flexible osmium... (More)
In the present study three different strains of Escherichia coli (JM 109 - a native "wild type" strain, JM 109/pBSD 1300 - a strain overproducing the membrane anchor domain of Bacillus subtilis succinate-quinone reductase, SQR, a protein that contains two transmembraneously arranged heme groups and JM109/pLUV 1900 - a strain overproducing cytochrome c(550) from B. subtilis, a protein where the cytochrome domain is anchored to the membrane with a transmembrane helix) were immobilised on the surface of a spectrographic graphite electrode and tested for electrical communication using mediators. Such compounds as ferricyanide, 2,6-dichlorophenolindophenol (DCPIP) and ubiquinone (Q(0)) were used as soluble mediators and two flexible osmium redox polymers; poly(1-vinylimidazole)(12)-[Os-(4,4'-dimethyl-2,2'-di'pyridyl)(2)Cl-2](2 +/+) (osmium redox polymer I) and poly(vinylpyridine)-[Os-(N,N'-methylated-2,2'-biimidazole)(3)](2+/3+) (osmium redox polymer II) were co-immobilised with the bacterial cells onto the electrode surface. The effects of applied potential, buffer pH and different substrates were compared for the different combinations bacterial strains - mediators. Through the introduction of the cytochromes in the bacterial membrane it was established that it had great effect on the ability of the bacterial cells to effectively communicate with artificial mediators. The introduction of the transmembraneously arranged heme groups of B. subtilis made it possible for this strain to communicate with the Os-polymers, whereas the introduction of the cytochrome c(550) had an effect especially increasing ability of Q(0) to act as an efficient e(-) acceptor. (C) 2009 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Flow-injection analysis, Mediated electron transfer, Escherichia coli
in
Electrochimica Acta
volume
54
issue
22
pages
4979 - 4984
publisher
Elsevier
conference name
59th Annual Meeting of the International-Society-of-Electrochemistry
external identifiers
  • wos:000267585500007
  • scopus:66149085687
ISSN
0013-4686
1873-3859
DOI
10.1016/j.electacta.2009.03.090
language
English
LU publication?
yes
id
8bc664b4-5476-4093-86c5-66c5943cd17b (old id 1463291)
date added to LUP
2009-08-18 13:18:43
date last changed
2017-02-05 03:42:29
@inproceedings{8bc664b4-5476-4093-86c5-66c5943cd17b,
  abstract     = {In the present study three different strains of Escherichia coli (JM 109 - a native "wild type" strain, JM 109/pBSD 1300 - a strain overproducing the membrane anchor domain of Bacillus subtilis succinate-quinone reductase, SQR, a protein that contains two transmembraneously arranged heme groups and JM109/pLUV 1900 - a strain overproducing cytochrome c(550) from B. subtilis, a protein where the cytochrome domain is anchored to the membrane with a transmembrane helix) were immobilised on the surface of a spectrographic graphite electrode and tested for electrical communication using mediators. Such compounds as ferricyanide, 2,6-dichlorophenolindophenol (DCPIP) and ubiquinone (Q(0)) were used as soluble mediators and two flexible osmium redox polymers; poly(1-vinylimidazole)(12)-[Os-(4,4'-dimethyl-2,2'-di'pyridyl)(2)Cl-2](2 +/+) (osmium redox polymer I) and poly(vinylpyridine)-[Os-(N,N'-methylated-2,2'-biimidazole)(3)](2+/3+) (osmium redox polymer II) were co-immobilised with the bacterial cells onto the electrode surface. The effects of applied potential, buffer pH and different substrates were compared for the different combinations bacterial strains - mediators. Through the introduction of the cytochromes in the bacterial membrane it was established that it had great effect on the ability of the bacterial cells to effectively communicate with artificial mediators. The introduction of the transmembraneously arranged heme groups of B. subtilis made it possible for this strain to communicate with the Os-polymers, whereas the introduction of the cytochrome c(550) had an effect especially increasing ability of Q(0) to act as an efficient e(-) acceptor. (C) 2009 Elsevier Ltd. All rights reserved.},
  author       = {Alferov, Sergey and Coman, Vasile and Gustavsson, Tobias and Reshetilov, Anatoly and von Wachenfeldt, Claes and Hägerhäll, Cecilia and Gorton, Lo},
  booktitle    = {Electrochimica Acta},
  issn         = {0013-4686},
  keyword      = {Flow-injection analysis,Mediated electron transfer,Escherichia coli},
  language     = {eng},
  number       = {22},
  pages        = {4979--4984},
  publisher    = {Elsevier},
  title        = {Electrical communication of cytochrome enriched Escherichia coli JM109 cells with graphite electrodes},
  url          = {http://dx.doi.org/10.1016/j.electacta.2009.03.090},
  volume       = {54},
  year         = {2009},
}