Selenomethionine
Chemical compound / From Wikipedia, the free encyclopedia
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Selenomethionine (SeMet) is a naturally occurring amino acid. The L-selenomethionine enantiomer is the main form of selenium found in Brazil nuts, cereal grains, soybeans, and grassland legumes, while Se-methylselenocysteine, or its γ-glutamyl derivative, is the major form of selenium found in Astragalus, Allium, and Brassica species.[1] In vivo, selenomethionine is randomly incorporated instead of methionine. Selenomethionine is readily oxidized.[2]
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Names | |||
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IUPAC name
2-Amino-4-(methylselanyl)butanoic acid | |||
Other names
MSE | |||
Identifiers | |||
3D model (JSmol) |
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ChEBI | |||
ChemSpider |
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ECHA InfoCard | 100.014.525 | ||
PubChem CID |
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UNII |
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CompTox Dashboard (EPA) |
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Properties | |||
C5H11NO2Se | |||
Molar mass | 196.106 g/mol | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Selenomethionine's antioxidant activity arises from its ability to deplete reactive oxygen species. Selenium and methionine also play separate roles in the formation and recycling of glutathione, a key endogenous antioxidant in many organisms, including humans.