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Selenium in biology. Selenocysteine is the main organic molecule involving selenium in humans. Selenium is an essential micronutrient for animals, though it is toxic in large doses. In plants, it sometimes occurs in toxic amounts as forage, e.g. locoweed. Selenium is a component of the amino acids selenocysteine and selenomethionine.
Selenium is a vital nutrient in animals, [6] including humans. About 25 different selenocysteine-containing selenoproteins have so far been observed in human cells and tissues. [ 7 ] Since lack of selenium deprives the cell of its ability to synthesize selenoproteins, many health effects of low selenium intake are believed to be caused by the ...
Selenocysteine (symbol Sec or U, [ 4] in older publications also as Se-Cys) [ 5] is the 21st proteinogenic amino acid. Selenoproteins contain selenocysteine residues. Selenocysteine is an analogue of the more common cysteine with selenium in place of the sulfur . Selenocysteine is present in several enzymes (for example glutathione peroxidases ...
Nuts are a good source of protein, but they shouldn't be your only one — plus other things experts want you to know about this plant-based snack. Dietitians debunk 7 myths about nuts, including ...
Grain legumes are cultivated for their seeds, [13] for humans and animals to eat, or for oils for industrial uses. Grain legumes include beans, lentils, lupins, peas, and peanuts. [14] Legumes are a key ingredient in vegan meat and dairy substitutes. They are growing in use as a plant-based protein source in the world marketplace.
Plant nutrition is the study of the chemical elements and compounds necessary for plant growth and reproduction, plant metabolism and their external supply. In its absence the plant is unable to complete a normal life cycle, or that the element is part of some essential plant constituent or metabolite. This is in accordance with Justus von ...
Micronutrient. Micronutrients are essential dietary elements required by organisms in varying quantities to regulate physiological functions of cells and organs. [ 1][ 2] Micronutrients support the health of organisms throughout life. [ 3][ 4][ 5] In varying amounts supplied through the diet, micronutrients include such compounds as vitamins ...
[citation needed] In humans, selenium is a trace element nutrient that functions as cofactor for reduction of antioxidant enzymes, such as glutathione peroxidases [111] and certain forms of thioredoxin reductase found in animals and some plants (this enzyme occurs in all living organisms, but not all forms of it in plants require selenium).