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Benzyl viologen cation radical: First example of a perfectly selective anion ionophore of the carrier type
Journal article   Peer reviewed

Benzyl viologen cation radical: First example of a perfectly selective anion ionophore of the carrier type

Choong-Hyun Kim, Jakob K. Kristjansson, Michael M. White and Thomas C. Hollocher
Biochemical and biophysical research communications, v 108(3), pp 1126-1130
15 Oct 1982
PMID: 7181886

Abstract

Measurements were made of the effect of dicationic (oxidized) and monocationic radical (reduced) forms of benzyl viologen (BV) and methyl viologen (MV) on the ion conductance across planar phospholipid bilayers under conditions of constant voltage. BV + at 60 μM greatly increased ion conductance whereas BV 2+, MV + and MV 2+ did not. Ion permeability ratios relative to nitrate were determined in the BV + system. BV + appears to be the first example of a perfectly anion-selective ionophore of the carrier type. BV + probably functions both as an electron carrier and ionophore for nitrate while catalyzing the dithionite-nitrate reductase reaction in Paracoccus denitrificans .

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Web of Science research areas
Biochemistry & Molecular Biology
Biophysics
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