Biodegradation of p-nitrophenol via 1,2,4-benzenetriol by an Arthrobacter sp
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چکیده
منابع مشابه
Biodegradation of p-nitrophenol via 1,2,4-benzenetriol by an Arthrobacter sp.
The degradation of p-nitrophenol (PNP) by Moraxella and Pseudomonas spp. involves an initial monooxygenase-catalyzed removal of the nitro group. The resultant hydroquinone is subject to ring fission catalyzed by a dioxygenase enzyme. We have isolated a strain of an Arthrobacter sp., JS443, capable of degrading PNP with stoichiometric release of nitrite. During induction of the enzymes required ...
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The biodegaradation of p-nitrophenol was studied experimentally at different initial p-nitrophenol concentrations under different environmental and operational conditions (like incubation temperature, pH, inoculum size etc.) by using microbial strain Arthrobacter chlorophenolicus A6. The rate of degradation of pnitrophenol was observed maximum at incubation temperature 30 ̊C and pH 7 ± 0.2, inoc...
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Three bacterial species, i.e., Ralstonia sp. SJ98, Arthrobacter protophormiae RKJ100, and Burkholderia cepacia RKJ200, have been examined for their efficiency and kinetics behavior toward PNP degradation. All the three bacteria utilized PNP as the sole source of carbon, nitrogen, and energy. The rates of radiolabeled [U-(14)C]PNP degradation by all the bacteria were higher in the nitrogen-free ...
متن کاملCloning of a gene cluster involved in the catabolism of p-nitrophenol by Arthrobacter sp. strain JS443 and characterization of the p-nitrophenol monooxygenase.
The npd gene cluster, which encodes the enzymes of a p-nitrophenol catabolic pathway from Arthrobacter sp. strain JS443, was cloned and sequenced. Three genes, npdB, npdA1, and npdA2, were independently expressed in Escherichia coli in order to confirm the identities of their gene products. NpdA2 is a p-nitrophenol monooxygenase belonging to the two-component flavin-diffusible monooxygenase fam...
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ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 1994
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.60.8.3030-3032.1994