2005年10月23日
Asparagine[Health care]
Asparagine
:''"Asn", and hence "asn", redirect here. For the television service, see Atlantic Satellite Network.''
Asparagine is one of the 20 most common natural amino acids on Earth. It has carboxamide as the side chain's functional group. It is considered a non-essential amino acid.Its three-letter abbreviation is Asn, and its one-letter abbreviation is N. A three-letter designation for either asparagine or aspartic acid is Asx (one-letter abbreviation: B).A reaction between asparagine and reducing sugars or reactive carbonyls produces acrylamide (acrylic amide) in food when heated to sufficient temperature, i.e. baking. These occur primarilly in baked goods such as french fries, potato chips, and roasted coffee.A byproduct of the breakdown of asparagine (asparagine-amino-succinic-acid monoamide) is also blamed for the smell in some people's urine after they have eaten asparagus (Some scientists disagree and implicate other substances in the smell, especially methanethiol). Asparagine was first disco!
vered in this plant, hence its name. It was the first amino acid to be discovered, in 1806.
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