نتایج جستجو برای: ralstonia eutropha h16
تعداد نتایج: 2604 فیلتر نتایج به سال:
The two highly homologous cbb operons of the facultative chemoautotroph Ralstonia eutropha H16 encode most enzymes of the Calvin-Benson-Bassham carbon reduction cycle. Their transcriptional regulation was investigated both in vitro and in vivo to identify a metabolic signal involved in this process. For this purpose an in vitro transcription system employing the DNA-dependent RNA polymerase pur...
Use of hydrogen in fuel cells requires catalysts that are tolerant to oxygen and are able to function in the presence of poisons such as carbon monoxide. Hydrogen-cycling catalysts are widespread in the bacterial world in the form of hydrogenases, enzymes with unusual active sites composed of iron, or nickel and iron, that are buried within the protein. We have established that the membrane-bou...
H(2) is an attractive energy source for many microorganisms and is mostly consumed before it enters oxic habitats. Thus aerobic H(2)-oxidizing organisms receive H(2) only occasionally and in limited amounts. Metabolic adaptation requires a robust oxygen-tolerant hydrogenase enzyme system and special regulatory devices that enable the organism to respond rapidly to a changing supply of H(2). The...
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