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Tryptophan (symbol Trp or W) [3] is an α-amino acid that is used in the biosynthesis of proteins.Tryptophan contains an α-amino group, an α-carboxylic acid group, and a side chain indole, making it a polar molecule with a non-polar aromatic beta carbon substituent.
Though 5-HTP is found in food only in insignificant quantities, it is a chemical involved intermediately in the metabolism of tryptophan, an amino acid found in all unfractionated foods, with lower total amino acid content correlating with increased tryptophan absorption. [7]
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An aromatic amino acid is an amino acid that includes an aromatic ring. Phenylalanine Among the 20 standard amino acids , histidine , phenylalanine , tryptophan , tyrosine , are classified as aromatic.
Indole is produced via anthranilate and reacts further to give the amino acid tryptophan. As an intercellular signal molecule , indole regulates various aspects of bacterial physiology, including spore formation, plasmid stability, resistance to drugs , biofilm formation, and virulence . [ 11 ]
α-Methyltryptophan (αMTP or α-MTP) is a synthetic tryptamine derivative, an artificial amino acid, and a prodrug of α-methylserotonin (αMS). [1] [2] [3] It is the α-methylated derivative of tryptophan, while αMS is the α-methylated analogue of serotonin.
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The reaction relies on the interaction between glyoxylic acid and the indole ring of the amino acid tryptophan, a structural feature found in most proteins. When proteins are exposed to concentrated sulfuric acid and glyoxylic acid, the indole group undergoes a reaction that produces a highly colored compound.