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Tryptophan ball and stick model spinning. 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.
Later studies proposed that the reaction involves a condensation process, where glyoxylic acid combines with the indole group of tryptophan to form a complex quinonoid structure. This process explains the strong color change observed in the test and has been key to understanding tryptophan's chemical properties and its function in proteins.
The Hopkins-Cole reaction, also known as the glyoxylic acid reaction, is a chemical test used for detecting the presence of tryptophan in proteins. [1] A protein solution is mixed with Hopkins Cole reagent, which consists of glyoxylic acid. Concentrated sulfuric acid is slowly added to form two layers. A purple ring appears between the two ...
The reaction of enantiopure tryptophan or its short-chain alkylesters leads to 1,2,3,4-tetrahydro-β-carbolines in which a new chiral center at C-1 adopts either a cis or trans configuration towards the C-3 carboxyl group. The cis conduction is kinetically controlled, i.e. it is performed at lower temperatures.
56720 Ensembl ENSG00000262635 ENSG00000151790 ENSMUSG00000028011 UniProt P48775 P48776 RefSeq (mRNA) NM_005651 NM_019911 RefSeq (protein) NP_005642 NP_064295 Location (UCSC) Chr 4: 155.85 – 155.92 Mb Chr 3: 81.86 – 81.88 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse In enzymology, tryptophan 2,3-dioxygenase (EC 1.13.11.11) is a heme enzyme that catalyzes the oxidation of L ...
Tryptolines are competitive selective inhibitors of the enzyme monoamine oxidase type A (). 5-Hydroxytryptoline and 5-methoxytryptoline (pinoline) are the most active monoamine oxidase inhibitors (MAOIs) with IC 50 s of 0.5 μM and 1.5 μM respectively.
The skeletal formula of the antidepressant drug escitalopram, featuring skeletal representations of heteroatoms, a triple bond, phenyl groups and stereochemistry. The skeletal formula, line-angle formula, bond-line formula or shorthand formula of an organic compound is a type of molecular structural formula that serves as a shorthand representation of a molecule's bonding and some details of ...
The systematic name of this enzyme class is L-tryptophan indole-lyase (deaminating; pyruvate-forming). Other names in common use include L-tryptophanase, and L-tryptophan indole-lyase (deaminating). This enzyme participates in tryptophan metabolism and nitrogen metabolism. It has 2 cofactors: pyridoxal phosphate, and potassium. [1] [2] [3]