Microbial oxidation of arsenite in a subarctic environment: diversity of arsenite oxidase genes and identification of a psychrotolerant arsenite oxidiser [PDF]
BMC Microbiology, 2010 Background Arsenic is toxic to most living cells. The two soluble inorganic forms of arsenic are arsenite (+3) and arsenate (+5), with arsenite the more toxic.
Walker Stephen R +6 more
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The Oxidation of Arsenite in Seawater
Environmental Letters, 1975 The oxidation rate of arsenite in seawater is very slow. Of the parameters investigated which might affect this rate the most important were temperature, initial arsenite concentration, salinity and pH. An empirical rate expression was developed from experimental data which led to a prediction that the natural rate of oxidation in the ocean is about 0 ...
Johnson, D. L., Pilson, M. E.Q.
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Biosensor for Arsenite Using Arsenite Oxidase and Multiwalled Carbon Nanotube Modified Electrodes
Analytical Chemistry, 2007 A biosensor for arsenite has been developed using molybdenum-containing arsenite oxidase, prepared from the chemolithoautotroph NT-26 that oxidizes arsenite to arsenate. The enzyme was galvanostatically deposited for 10 min at 10 microA onto the active surface of a multiwalled carbon nanotube modified glassy carbon electrode.
Male, Keith B. +3 more
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Proteostasis during arsenite stress in Saccharomyces cerevisiae [PDF]
, 2022 Around 200 million people are exposed to high levels of arsenic through contaminated soil and, consequently, contaminated food and drinking water.
Silva Rodrigues, Joana Isabel
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Bacterial Oxidation of Arsenite III. Cell-Free Arsenite Dehydrogenase [PDF]
Australian Journal of Biological Sciences, 1954 A soluble, cell-free arsenite dehydrogenase is liberated from cells of strain 17 of the arsenite-oxidizing pseudomonad (Pseudomonas arsenoxydans-quinque) after grinding with powdered glass. The enzyme is moderately stable, retaining its activity for considerable periods on storage at· low temperatures.
J W, LEGGE, A W, TURNER
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Journal of Biological Chemistry, 2023 Arsenic contamination of groundwater is among one of the biggest health threats affecting millions of people in the world. There is an urgent need for efficient arsenic biosensors where the use of arsenic metabolizing enzymes can be explored. In this work, we have solved four crystal structures of arsenite oxidase (Aio) in complex with arsenic and ...
Filipa Engrola +7 more
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A periplasmic arsenite‐binding protein involved in regulating arsenite oxidation [PDF]
Environmental Microbiology, 2011 Summary Arsenic (As) is the most common toxic element in the environment, ranking first on the Superfund List of Hazardous Substances. Microbial redox transformations are the principal drivers of As chemical speciation, which in turn dictates As mobility and toxicity.
Guanghui, Liu +8 more
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Differential contributions of the proteasome, autophagy, and chaperones to the clearance of arsenite-induced protein aggregates in yeast [PDF]
, 2022 Arsenic and cadmium are two toxic heavy metals that occur naturally in bedrock. Arsenic is found in high concentrations in certain areas and can contaminate groundwater, leading to exposure through drinking water and crop irrigation for the local ...
Lorentzon, Emma +15 more
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The respiratory arsenite oxidase: structure and the role of residues surrounding the Rieske cluster [PDF]
, 2013 The arsenite oxidase (Aio) from the facultative autotrophic Alphaproteobacterium Rhizobium sp. NT-26 is a bioenergetic enzyme involved in the oxidation of arsenite to arsenate.
Muse Oke (452182) +56 more
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Arsenite-induced pseudo-hypoxia results in loss of anchorage-dependent growth in BEAS-2B pulmonary epithelial cells. [PDF]
PLoS ONE, 2014 Epidemiology studies have established a strong link between lung cancer and arsenic exposure. Currently, the role of disturbed cellular energy metabolism in carcinogenesis is a focus of scientific interest.
Fei Zhao +5 more
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