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Asparagine (symbol Asn or N [2]) is an α-amino acid that is used in the biosynthesis of proteins. It contains an α-amino group (which is in the protonated −NH + 3 form under biological conditions), an α-carboxylic acid group (which is in the deprotonated −COO − form under biological conditions), and a side chain carboxamide ...
Deamidation is a chemical reaction in which an amide functional group in the side chain of the amino acids asparagine or glutamine is removed or converted to another functional group. Typically, asparagine is converted to aspartic acid or isoaspartic acid. Glutamine is converted to glutamic acid or pyroglutamic acid (5-oxoproline).
It consists of three amino acid residues (labeled i, i+1 and i+2) in which residue i is an aspartate (Asp) or asparagine (Asn) that forms a hydrogen bond from its sidechain CO group to the mainchain NH group of residue i+2. About 14% of Asx residues present in proteins belong to Asx turns.
(2S)-2-amino-3-carbamoyl-propanoic acid Abbreviations: N, Asn Synonyms: (S)-2-aminosuccinic acid 4-amide {α/2}-aminosuccinamic acid Agedoite Altheine Asparagine acid Asparamide Asparatamine Aspartamic acid Aspartamine Aspartic acid β-amide Aspartic acid amide CHEBI:17196 Crystal VI NSC 82391
The first few amino acids were discovered in the early 1800s. [8] [9] In 1806, French chemists Louis-Nicolas Vauquelin and Pierre Jean Robiquet isolated a compound from asparagus that was subsequently named asparagine, the first amino acid to be discovered.
[1] [2] It consists of four or five amino acid residues with either aspartate or asparagine as the first residue (residue i). It is defined by two internal hydrogen bonds. One is between the side chain oxygen of residue i and the main chain NH of residue i+2 or i+3; the other is between the main chain oxygen of residue i and the main chain NH ...
N-linked glycans are almost always attached to the nitrogen atom of an asparagine (Asn) side chain that is present as a part of Asn–X–Ser/Thr consensus sequence, where X is any amino acid except proline (Pro). [4] In animal cells, the glycan attached to the asparagine is almost inevitably N-acetylglucosamine (GlcNAc) in the β-configuration ...
Potassium asparaginate is a potassium salt of L-asparagine amino acid. [2] [3] [4] [5]Potassium asparaginate can be considered both a salt and a coordination complex. [6] [3] As a salt, potassium asparaginate is formed when the potassium ion (K +) replaces the hydrogen ion (H +) in the carboxyl group of L-asparagine, an amino acid; in this process, the carboxyl group (–COOH) in L-asparagine ...