Generation of a transmembrane gradient of Na+ in Methanosarcina barkeri
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چکیده
منابع مشابه
Methanogenic cleavage of acetate by lysates of Methanosarcina barkeri.
Cell lysates of acetate-grown Methanosarcina barkeri 227 were found to cleave acetate to CH4 and CO2. The aceticlastic reaction was identified by using radioactive methyl-labeled acetate. Cell lysates decarboxylated acetate in a nitrogen atmosphere, conserving the methyl group in methane. The rate of methanogenesis from acetate in the cell lysates was comparable to that observed with whole cell...
متن کاملChanges in concentrations of coenzyme F420 analogs during batch growth of Methanosarcina barkeri and Methanosarcina mazei.
Coenzyme F420 has been assayed by high-performance liquid chromatography with fluorimetric detection; this permits quantification of individual coenzyme F420 analogs whilst avoiding the inclusion of interfering material. The total intracellular coenzyme F420 content of Methanosarcina barkeri MS cultivated on methanol and on H2-CO2 and of Methanosarcina mazei S-6 cultured on methanol remained re...
متن کاملBioenergetics of methanogenesis from acetate by Methanosarcina barkeri.
Methane formation from acetate by resting cells of Methanosarcina barkeri was accompanied by an increase in the intracellular ATP content from 0.9 to 4.0 nmol/mg of protein. Correspondingly, the proton motive force increased to a steady-state level of -120 mV. The transmembrane pH gradient however, was reversed under these conditions and amounted to +20 mV. The addition of the protonophore 3,5,...
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15 صفحه اولEffect of octamethylcyclotetrasiloxane on methylation of bismuth by Methanosarcina barkeri.
Octamethylcyclotetrasiloxane (OMCTS), a common constituent of household products, triggers the transformation of bismuth to the volatile toxic derivative trimethylbismuth by Methanosarcina barkeri, which is a representative member of the sewage sludge microflora. Comparative studies with the ionophores monensin and lasalocid, which induce effects similar to those observed for OMCTS, indicated t...
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ژورنال
عنوان ژورنال: European Journal of Biochemistry
سال: 1987
ISSN: 0014-2956,1432-1033
DOI: 10.1111/j.1432-1033.1987.tb10624.x