Results 191 to 200 of about 10,020 (234)
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Relation of aerobiosis and ionic strength to the uptake of dihydrostreptomycin in Escherichia coli.
Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1980Aminoglycoside antibiotics exhibit a markedly reduced antibacterial activity under anaerobic conditions. Anaerobiosis or inhibitors of electron transport produced an extensive decrease in the uptake of dihydrostreptomycin in Escherichia coli K-12. Uptake of proline or putrescine were only slightly impaired under anaerobic conditions in the presence of ...
B. Campbell, R. Kadner
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Aerobiosis Increases the Genomic Guanine Plus Cytosine Content (GC%) in Prokaryotes
Journal of Molecular Evolution, 2002The huge variation in the genomic guanine plus cytosine content (GC%) among prokaryotes has been explained by two mutually exclusive hypotheses, namely, selectionist and neutralist. The former proposals have in common the assumption that this feature is a form of adaptation to some ecological or physiological condition.
Hugo Naya +4 more
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Characterization of E. coli MG1655 and frdA and sdhC mutants at various aerobiosis levels.
Journal of Biotechnology, 2011Depending on the availability of oxygen, Escherichia coli is able to switch between aerobic respiratory metabolism and anaerobic mixed acid fermentation. An important, yet understudied, metabolic mode is the micro-aerobic metabolism at intermediate oxygen availabilities. The relationship between oxygen input, physiology and gene expression of E.
Sonja Steinsiek +3 more
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Life History Traits and Genome Structure: Aerobiosis and G+C Content in Bacteria [PDF]
International Conference on Conceptual Structures, 2004 Evolution is a tinkerer not an engineer: the term exaptation was coined to signify that old structures, that could be not significant in terms of fitness, get re-used when environmental conditions changed. Here I show that the average protein composition of G+C rich bacteria were exapted to the switch from anaerobic to aerobic conditions.
J. Lobry
semanticscholar +4 more sources
Earth and Planetary Science Letters, 2008
Abstract Bacteriohopanepolyols with A-ring methyl substituents are bacterial lipid biomarkers that are presently known to originate from just a few specific taxa. When preserved in ancient rocks, the fossilized hydrocarbon skeletons of these molecules have the potential to provide biogeochemical records of those taxa and their respective physiologies.
J. Eigenbrode, K. Freeman, R. Summons
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Abstract Bacteriohopanepolyols with A-ring methyl substituents are bacterial lipid biomarkers that are presently known to originate from just a few specific taxa. When preserved in ancient rocks, the fossilized hydrocarbon skeletons of these molecules have the potential to provide biogeochemical records of those taxa and their respective physiologies.
J. Eigenbrode, K. Freeman, R. Summons
semanticscholar +3 more sources
Process Biochemistry, 2017
Abstract Corynebacterium glutamicum is known to produce organic acids under anaerobic culture conditions, in particular, lactic, succinic, and acetic acids. Our study is focused on acetic and succinic acid production using a lactate dehydrogenase-deficient strain of C. glutamicum .
A. Kaboré +5 more
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Abstract Corynebacterium glutamicum is known to produce organic acids under anaerobic culture conditions, in particular, lactic, succinic, and acetic acids. Our study is focused on acetic and succinic acid production using a lactate dehydrogenase-deficient strain of C. glutamicum .
A. Kaboré +5 more
semanticscholar +3 more sources
Aerobiosis and the hemoprotein content of photosynthetic bacteria [PDF]
Archiv f�r Mikrobiologie, 1959 Rhodospirillum rubrum and Rhodopseudomonas spheroides, grown under various degrees of illumination, aeration, and iron deprivation, have been assayed for their content of cytochrome c, RHP, catalase, total iron, bacteriochlorophyll, and carotenoids.
openaire +2 more sources
Aerobiosis and anaerobiosis during diving by western grebes: An optimal foraging approach*
Journal of Theoretical Biology, 1989It is widely assumed that anaerobic diving is inefficient, and yet anaerobic dives are regularly observed in nature. We develop a model of diving, using a dynamic programming approach, that assumes dives are made to capture food. The essence of the model is that while aerobic diving is energetically efficient (in terms of glucose expended per mol of ...
R. Ydenberg, C. Clark
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