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. 1986 Aug;167(2):729-31.
doi: 10.1128/jb.167.2.729-731.1986.

Iron respiration-driven proton translocation in aerobic bacteria

K A Short, R P Blakemore

Iron respiration-driven proton translocation in aerobic bacteria

K A Short et al. J Bacteriol. 1986 Aug.

Abstract

Washed cell suspensions of Aquaspirillum magnetotacticum MS-1, A. itersonii E12639, Bacillus subtilis 6633, and Escherichia coli CSH27 translocated protons in response to the added oxidant O2 or NO3-, with triphenylmethylphosphonium bromide as the permeant ion. Iron respiration-driven proton translocation was observed in A. magnetotacticum MS-1, B. subtilis, and E. coli but not in a nonmagnetic strain of A. magnetotacticum (strain NM-1A) or with A. itersonii. Proton translocation to Fe3+ was totally inhibited by 500 microM NaN3 or 0.5 microM carbonyl cyanide m-chlorophenylhydrazone.

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