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Biochimica Et Biophysica Acta - General Subjects, 2018
Selenium (Se) is not an essential element for plants, although it can benefit their growth and survival in some envionments. Excess tissue Se concentrations are toxic. The ability to sequester Se in vacuoles, synthesise non-toxic Se metabolites, or volatilise Se compounds determines maximum tissue Se concentrations and the ability to colonise ...
Philip J White
exaly +3 more sources
Selenium (Se) is not an essential element for plants, although it can benefit their growth and survival in some envionments. Excess tissue Se concentrations are toxic. The ability to sequester Se in vacuoles, synthesise non-toxic Se metabolites, or volatilise Se compounds determines maximum tissue Se concentrations and the ability to colonise ...
Philip J White
exaly +3 more sources
Regulation of Selenium Metabolism and Transport
Annual Review of Nutrition, 2015Selenium is regulated in the body to maintain vital selenoproteins and to avoid toxicity. When selenium is limiting, cells utilize it to synthesize the selenoproteins most important to them, creating a selenoprotein hierarchy in the cell. The liver is the central organ for selenium regulation and produces excretory selenium forms to regulate whole-body
Raymond F Burk, Kristina E Hill
exaly +3 more sources
Metabolism of selenium in humans
Journal of Trace Elements in Experimental Medicine, 1998Selenium (Se) metabolism in humans is discussed. More selenium as selenomethionine (Semet) is absorbed than when it is present as selenite (95-97% vs. 44-70%). The selenium content in blood is correlated with GPX activity in selenium-deficient Chinese and in New Zealanders, but it is not correlated in blood of subjects living in the states of Oregon or
exaly +2 more sources
Metabolism of selenium in a selenium-dependent bacterium
Biological Trace Element Research, 1990A selenium-dependent Bacillus sp. is able to grow well up to 3% sodium selenite-containing media. The bacterium completely failed to grow on media devoid of selenium. The presence of selenium in the growth media increased the bacterial contents of proteins, carbohydrates, and lipids.
A A, Razak, S E, Ramadan, K, el-Zawahry
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Selenium metabolism and bioavailability
Biological Trace Element Research, 1996Selenium (Se) is at once an essential and toxic nutrient that occurs in both inorganic and organic forms. The biological functions of Se are mediated through at least 13 selenoproteins that contain Se as selenocysteine (Se-cyst). The endogenous synthesis of this amino acid from inorganic Se (selenide Se-2) and serine is encoded by a stop codon UGA in ...
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Selenium accumulation and metabolism in algae
Aquatic Toxicology, 2017Selenium (Se) is an intriguing element because it is metabolically required by a variety of organisms, but it may induce toxicity at high doses. Algae primarily absorb selenium in the form of selenate or selenite using mechanisms similar to those reported in plants.
Michela, Schiavon +3 more
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