Proton-motive force during growth ofEscherichia coliin the recycling fermentor
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چکیده
منابع مشابه
Proton motive force during growth of Streptococcus lactis cells.
Experiments with the aerotolerant anaerobe Streptococcus lactis provide the opportunity for determining the proton motive force (Deltap) in dividing cells. The two components of Deltap, DeltaPsi (the transmembrane potential) and DeltapH (the chemical gradient of H(+)), were determined by the accumulation of radiolabeled tetraphenylphosphonium (TPP(+)) and benzoate ions. The DeltaPsi was calibra...
متن کاملEnergizing porters by proton-motive force.
It is generally accepted that the chemistry of water was the most crucial determinant in shaping life on earth. Among the more important chemical features of water is its dissociation into protons and hydroxyl ions. The presence of relatively high proton concentrations in the ambient solution resulted in the evolution of proton pumps during the dawn of life on earth. These proton pumps maintain...
متن کاملTransport of amino acids in Lactobacillus casei by proton-motive-force-dependent and non-proton-motive-force-dependent mechanisms.
Lactobacillus casei 393 cells which were energized with glucose (pH 6.0) took up glutamine, asparagine, glutamate, aspartate, leucine, and phenylalanine. Little or no uptake of several essential amino acids (valine, isoleucine, arginine, cysteine, tyrosine, and tryptophan) was observed. Inhibition studies indicated that there were at least five amino acid carriers, for glutamine, asparagine, gl...
متن کاملAntiinfectives targeting enzymes and the proton motive force.
There is a growing need for new antibiotics. Compounds that target the proton motive force (PMF), uncouplers, represent one possible class of compounds that might be developed because they are already used to treat parasitic infections, and there is interest in their use for the treatment of other diseases, such as diabetes. Here, we tested a series of compounds, most with known antiinfective a...
متن کاملThe relative proton stoichiometries of the mitochondrial proton pumps are independent of the proton motive force.
Several different proton pumps were used to generate a proton motive force (delta p, proton motive force across the mitochondrial inner membrane) in isolated rat liver mitochondria, and the relationship between delta p and pump rate was investigated by titrating with various inhibitors of the pumps. It was found that this relationship was the same for mitochondria respiring on succinate irrespe...
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ژورنال
عنوان ژورنال: FEBS Letters
سال: 1986
ISSN: 0014-5793
DOI: 10.1016/0014-5793(86)80709-8