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Oxidoreductases and Oxygenases
1984Oxidoreductases (dehydrogenases or oxidases) catalyze the addition or the removal of hydrogen or electrons. Oxygenases bring about the incorporation of oxygen which originates from molecular oxygen.
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, 2002 Oxidative stresses such as oxidant stimuli, inflammation, exposure to xenobiotics, and ionizing irradiation elicit various tissue injuries and provoke cellular responses, principally involving transcriptional activation of genes encoding proteins which participate in the defense reactions (Camhi et al., 1995).
Reiko Akagi +4 more
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Oxygenases and Oxidases:Hypothesis
1983I thank Professors Sund and Ullrich for their kind invitation to join this celebration of Otto Warburg’s 100th birthday. It is now more than 50 years since he and Negelein established cytochrome a3 as the “oxygen transporting” or autoxidizable component of the respiratory chain (Warburg and Negelein 1928), laying foundations for the modern structure of
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Diversity of chloroaromatic oxygenases
Current Opinion in Biotechnology, 1993Abstract Chloroaromatic compounds are widely used and may cause serious pollution. Aerobic biodegradation of some chloroaromatics by microorganisms has been studied extensively and an increasing number of oxygenase genes responsible for the degradation of aromatic compounds, including chloroaromatics, are being characterized. Chloroaromatic-degrading
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Chlorpromazine inhibition of tryptophan oxygenase
Biochemical Pharmacology, 1971Abstract The effect of chlorpromazine on the activity of liver tryptophan oxygenase was examined in rat liver homogenates and in perfused rat livers. Chlorpromazine was found to inhibit the enzyme in the assay system (50 per cent inhibition at 3 · 10 −4 M).
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2014
Many microbial pathogens are known to possess heme acquisition systems that allow the organisms to utilize heme or heme-bound proteins as sources of iron. These systems have been demonstrated to procure iron from heme, hemoglobin, haptoglobin, or hemopexin and are identified as nonsiderophore heme iron acquisition systems.
Melanie Ratliff-Griffin +2 more
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Many microbial pathogens are known to possess heme acquisition systems that allow the organisms to utilize heme or heme-bound proteins as sources of iron. These systems have been demonstrated to procure iron from heme, hemoglobin, haptoglobin, or hemopexin and are identified as nonsiderophore heme iron acquisition systems.
Melanie Ratliff-Griffin +2 more
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Ribulose Biphosphate Oxygenase
1985Ribulose biphosphate oxygenase/carboxylase is a very interesting enzyme in several respects. It is the enzyme that provides the glycolate associated with photorespiration in C3 plants by catalyzing the reaction of the substrate with molecular oxygen (Metzler, 1977).
Damon L. Meyer, Llyod L. Ingraham
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1962
Publisher Summary This chapter focuses on phenolytic oxygenases. Oxygenases are found in all types of living organisms and perform a variety of functions. The insertion of molecular oxygen into organic substrates has been demonstrated in many enzymic systems involving a variety of molecular structures.
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Publisher Summary This chapter focuses on phenolytic oxygenases. Oxygenases are found in all types of living organisms and perform a variety of functions. The insertion of molecular oxygen into organic substrates has been demonstrated in many enzymic systems involving a variety of molecular structures.
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The mechanism of the autoxidation of oxygenases
Biochemical and Biophysical Research Communications, 1962Fuminori Kanetsuna +4 more
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