Books > Science & Mathematics > Biology, life sciences > Biochemistry > Toxicology (non-medical)
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The Metabolism of Arsenite (Paperback)
Loot Price: R2,246
Discovery Miles 22 460
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The Metabolism of Arsenite (Paperback)
Series: Arsenic in the environment
Expected to ship within 12 - 17 working days
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Up to 200 million people in 70 countries are at risk from drinking
water contaminated with arsenic, which is a major cause of chronic
debilitating illnesses and fatal cancers. Until recently little was
known about the mobility of arsenic, and how redox transformations
determined its movement into or out of water supplies. Although
human activities contribute to the release of arsenic from
minerals, it is now clear that bacteria are responsible for most of
the redox transformation of arsenic in the environment. Bacterial
oxidation of arsenite (to the less mobile arsenate) has been known
since 1918, but it was not until 2000 that a bacterium was shown to
gain energy from this process. Since then a wide range of
arsenite-oxidizing bacteria have been isolated, including aerobes
and anaerobes; heterotrophs and autotrophs; thermophiles,
mesophiles and psychrophiles. This book reviews recent advances in
the study of such bacteria. After a section on background-geology
and health issues-the main body of the book concerns the cellular
machinery of arsenite oxidation. It concludes by examining possible
applications. Topics treated are: The geology and cycling of
arsenic Arsenic and disease Arsenite oxidation: physiology,
enzymes, genes, and gene regulation. Community genomics and
functioning, and the evolution of arsenite oxidation Microbial
arsenite oxidation in bioremediation Biosensors for arsenic in
drinking water and industrial effluents
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