Results 91 to 100 of about 213 (130)
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Characterization of Nitrobacter agilis immobilized in calcium alginate
Enzyme and Microbial Technology, 1986Nitrobacter agilis cells have been immobilized in calcium alginate and the resulting preparation was used as a biocatalyst for the oxidation of nitrite to nitrate ions. The influence of pH, temperature, and the size and cell load of the biocatalyst beads on the activity was determined, as well as the storage and operational stability of the system. The
J Tramper
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Nature, 1958
A CYTOCHROME system appears to be involved in the oxidation of nitrite by Nitrobacter since, at normal temperatures, three cytochrome bands may be seen in suspensions of the cells in the presence of nitrite, but not in its absence. These are two sharp bands at 521 mµ and at 550 mµ and a more diffuse, less-intense band at about 589 mµ 1.
W D, BUTT, H, LEES
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A CYTOCHROME system appears to be involved in the oxidation of nitrite by Nitrobacter since, at normal temperatures, three cytochrome bands may be seen in suspensions of the cells in the presence of nitrite, but not in its absence. These are two sharp bands at 521 mµ and at 550 mµ and a more diffuse, less-intense band at about 589 mµ 1.
W D, BUTT, H, LEES
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Formate utilization by Nitrobacter wibogradskyi
Biochimica et Biophysica Acta (BBA) - General Subjects, 1966Abstract 1. 1. Formate is actively oxidized by Nitrobacter winogradskyi. The pH that is optimal for formate oxidation is different from the optimum pH for nitrite oxidation 2. 2. The same respiratory chain is used between cytochrome c and oxygen for nitrite and formate oxidation. 3. 3. Energy from formate oxidation is used to CO2 fixation
A, Van Gool, H, Laudelout
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Oxidative phosphorylation in Nitrobacter winogradskyi
Biochimica et Biophysica Acta (BBA) - Enzymology and Biological Oxidation, 1965Summary A crude cell-free extract from Nitrobacter winogradskyi , which esterified inorganic phosphate in the course of oxidizing nitrite, had a P/O ratio of 0.17. Only fairly coarse particles were found to exhibit P/O ratios larger than 0.1.
I, Fischer, H, Laudelout
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Exogenous Respiration in Nitrobacter
Nature, 1960DURING the course of an investigation of the oxidation of nitrite by the nitrite-oxidizing bacterium, Nitrobacter, it was noted that the addition of sodium nitrite but not sodium nitrate to heavy cell suspensions caused the immediate appearance of reduced cytochrome bands at 590, 551 and 513 mµ when viewed in the hand spectroscope1.
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The mechanism of nitrite oxidation by Nitrobacter winogradskyi
Biochimica et Biophysica Acta (BBA) - Enzymology and Biological Oxidation, 1966Summary 1. With exception of certain narcotics, the effect of classical inhibitors on the nitrite respiration of Nitrobacter winogradskyi was in agreement with the usual inhibition pattern characteristic of a cytochrome respiratory chain. Strong inhibition by quinacrine and its reversal by flavin-adenine dinucleotide shows that a flavin is ...
A, Van Gool, H, Laudelout
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An amperometric enzyme-linked immunosensor for Nitrobacter
Applied Microbiology and Biotechnology, 1998A new amperometric enzyme-linked immunoassay for specific enumeration of Nitrobacter has been developed. This assay uses an electrode made of glassy carbon, on which the immunological reaction is carried out. The method is based on a competitive immunoassay principle, utilising monoclonal primary antibody and alkaline-phosphatase-labelled secondary ...
B, Sandén, L H, Eng, G, Dalhammar
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Particulate formate oxidase from Nitrobacter agilis
Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1970Abstract 1. The nitrite oxidase particles obtained by sonic oscillation of Nitrobacter agilis cells also possessed appreciable formate oxidase activity, ranging from about 25 to 50% of the nitrite oxidase activity depending upon the N. agilis strain.
J C, O'Kelley, A, Nason
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Immunofluorescence studies of Nitrobacter populations in soils
Canadian Journal of Microbiology, 1977Certain steps of a protocol to enumerate a bacterium directly in soil by immunofluorescence were studied with respect to the enumeration of Nitrobacter in soils of diverse properties. Maximal counts of Nitrobacter were obtained by varying factors involved in the release of bacteria from the soil.
R J, Rennie, E L, Schmidt
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The fine structure of frozen etched Nitrobacter cells
Archiv f�r Mikrobiologie, 19691. The ultrastructure of frozen etched Nitrobacter winogradskyi cells was examined and compared with thin sections of chemically fixed cells. 2. Frozen etched cells showed two equally thick wall layers interconnected by short strands.
A P, van Gool, R, Lambert, H, Laudelout
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