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SummaryCorrinoids are central cofactors in bacterial metabolism, where they participate in a series of organometallic and redoxprocesses. These depend on the unique coordination chemistry and reactivity of the corrin-bound cobalt centers to which, in the complete corrins, also a nucleotide...
SummaryThe metabolism of methanol and pyruvate by cells of Methanosarcina barkeri was probed in vivo by NMR taking advantage of the non-invasive characteristics of this technique. Upon administration of substrates, the kinetics of substrate consumption, the product formation and the energetic...
SummaryThe membrane-bound hydrogenase from Thiocapsa roseopersicina is composed of two subunits and contains two Fe-S centres and one Ni per molecule. The enzyme resists heat and proteolytic degradation, its activity is retained under SDS-PAGE conditions.The location of the metal atoms on the...
SummaryClostridium thermoautotrophicum and C. thermoaceticum contain an anaerobic electron transport chain. It involves hydrogen and carbon monoxide as electron donors and, presumably methylenetetrahydrofolate as physiological electron acceptor. Cytochrome b554, cytochrome b559, menaquinone, a...
SummaryEverted vesicles of the methanogenic strain Gö1 synthesized ATP in response to methanogenesis from methyl-coenzyme M and H2. Simultaneously, a transmembrane pH gradient (ΔpH) was generated as evident from fluorescence quenching of acridine orange. Protonophorous uncouplers prevented ΔpH...
SummaryThe biological oxidation of methane to methanol is catalysed by soluble and particulate forms of the enzyme methane monooxygenase. Little information is available regarding the structure and mechanism of the particulate enzyme whereas much is known about the soluble form of the enzyme....
SummaryThis is a brief review of the structure and interaction of methanol dehydrogenase and its electron acceptor cytochrome cL, their regulation by modifier protein, and the synthesis and assembly of the ‘methanol oxidase’ system.
SummaryProcesses for production of glycerol, aldehydes and polyols by using the methylotrophic function of yeasts were developed. The unique metabolism of glycerol involving a new enzyme, dihydroxyacetone reductase, was applied to the glycerol production employing a glycerol-negative mutant....
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