In vivo 23Na nuclear magnetic resonance study of maintenance of a sodium gradient in the ruminal bacterium Fibrobacter succinogenes S85.
Identifieur interne : 000726 ( PubMed/Corpus ); précédent : 000725; suivant : 000727In vivo 23Na nuclear magnetic resonance study of maintenance of a sodium gradient in the ruminal bacterium Fibrobacter succinogenes S85.
Auteurs : V. Schwaab ; C. Matheron ; A M Delort ; G. Gaudet ; E. ForanoSource :
- Applied and environmental microbiology [ 0099-2240 ] ; 2001.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Organometallic Compounds, Organophosphorus Compounds, Sodium Chloride, Sodium Isotopes.
- methods : Magnetic Resonance Spectroscopy.
- microbiology : Rumen.
- physiology : Bacteria, Anaerobic.
- Animals.
Abstract
Sodium gradients (DeltapNa) were measured in resting cells of Fibrobacter succinogenes by in vivo 23Na nuclear magnetic resonance using Tm(DOTP)5- [thulium(III) 1,4,7,10-tetraazacyclododecane-N',N",N"'-tetramethylenephosphonate] as the shift reagent. This bacterium was able to maintain a DeltapNa of -55 to -40 mV for extracellular sodium concentrations ranging from 30 to 200 mM. Depletion of Na+ ions during the washing steps led to irreversible damage (modification of glucose metabolism and inability to maintain a sodium gradient).
PubMed: 11526055
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pubmed:11526055Le document en format XML
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<affiliation><nlm:affiliation>Laboratoire de Synthèse, Electrosynthèse et Etude de Systèmes à Intérêt Biologique, UMR 6504, Université Blaise Pascal-CNRS, 63177 Aubière cedex, France.</nlm:affiliation>
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<author><name sortKey="Matheron, C" sort="Matheron, C" uniqKey="Matheron C" first="C" last="Matheron">C. Matheron</name>
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<author><name sortKey="Delort, A M" sort="Delort, A M" uniqKey="Delort A" first="A M" last="Delort">A M Delort</name>
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<author><name sortKey="Gaudet, G" sort="Gaudet, G" uniqKey="Gaudet G" first="G" last="Gaudet">G. Gaudet</name>
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<author><name sortKey="Forano, E" sort="Forano, E" uniqKey="Forano E" first="E" last="Forano">E. Forano</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en">In vivo 23Na nuclear magnetic resonance study of maintenance of a sodium gradient in the ruminal bacterium Fibrobacter succinogenes S85.</title>
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<author><name sortKey="Delort, A M" sort="Delort, A M" uniqKey="Delort A" first="A M" last="Delort">A M Delort</name>
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<author><name sortKey="Gaudet, G" sort="Gaudet, G" uniqKey="Gaudet G" first="G" last="Gaudet">G. Gaudet</name>
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<author><name sortKey="Forano, E" sort="Forano, E" uniqKey="Forano E" first="E" last="Forano">E. Forano</name>
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<series><title level="j">Applied and environmental microbiology</title>
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<term>Bacteria, Anaerobic (physiology)</term>
<term>Magnetic Resonance Spectroscopy (methods)</term>
<term>Organometallic Compounds (metabolism)</term>
<term>Organophosphorus Compounds (metabolism)</term>
<term>Rumen (microbiology)</term>
<term>Sodium Chloride (metabolism)</term>
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<term>Sodium Isotopes</term>
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<front><div type="abstract" xml:lang="en">Sodium gradients (DeltapNa) were measured in resting cells of Fibrobacter succinogenes by in vivo 23Na nuclear magnetic resonance using Tm(DOTP)5- [thulium(III) 1,4,7,10-tetraazacyclododecane-N',N",N"'-tetramethylenephosphonate] as the shift reagent. This bacterium was able to maintain a DeltapNa of -55 to -40 mV for extracellular sodium concentrations ranging from 30 to 200 mM. Depletion of Na+ ions during the washing steps led to irreversible damage (modification of glucose metabolism and inability to maintain a sodium gradient).</div>
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<Abstract><AbstractText>Sodium gradients (DeltapNa) were measured in resting cells of Fibrobacter succinogenes by in vivo 23Na nuclear magnetic resonance using Tm(DOTP)5- [thulium(III) 1,4,7,10-tetraazacyclododecane-N',N",N"'-tetramethylenephosphonate] as the shift reagent. This bacterium was able to maintain a DeltapNa of -55 to -40 mV for extracellular sodium concentrations ranging from 30 to 200 mM. Depletion of Na+ ions during the washing steps led to irreversible damage (modification of glucose metabolism and inability to maintain a sodium gradient).</AbstractText>
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<CommentsCorrectionsList><CommentsCorrections RefType="Cites"><RefSource>Appl Environ Microbiol. 1998 Jan;64(1):74-81</RefSource>
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<CommentsCorrections RefType="Cites"><RefSource>Microbiology. 1995 Mar;141 ( Pt 3):729-36</RefSource>
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<CommentsCorrections RefType="Cites"><RefSource>Appl Environ Microbiol. 1987 Oct;53(10):2379-83</RefSource>
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