Tryptophan (symbol Trp or W) is an α-amino acid that is used in the biosynthesis of proteins. Tryptophan contains an α-amino group, an α-carboxylic acid...
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Tryptophan synthase or tryptophan synthetase is an enzyme (EC 4.2.1.20) that catalyzes the final two steps in the biosynthesis of tryptophan. It is commonly...
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Tryptophan repressor (or trp repressor) is a transcription factor involved in controlling amino acid metabolism. It has been best studied in Escherichia...
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Fluorescence spectroscopy (redirect from Tryptophan fluorescence spectroscopy)
In addition, tryptophan is a relatively rare amino acid; many proteins contain only one or a few tryptophan residues. Therefore, tryptophan fluorescence...
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5-Hydroxytryptophan (redirect from 5-hydroxy-tryptophan)
5-HTP is produced from the amino acid tryptophan through the action of the enzyme tryptophan hydroxylase. Tryptophan hydroxylase is one of the biopterin-dependent...
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ingestion of the dietary supplement L-tryptophan. The risk of developing EMS increases with larger doses of tryptophan and increasing age. Some research suggests...
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Trp operon (redirect from Tryptophan operon)
bacteria. The operon is regulated so that, when tryptophan is present in the environment, the genes for tryptophan synthesis are repressed. The trp operon contains...
21 KB (2,606 words) - 07:48, 3 June 2024
In enzymology, tryptophan 2,3-dioxygenase (EC 1.13.11.11) is a heme enzyme that catalyzes the oxidation of L-tryptophan (L-Trp) to N-formyl-L-kynurenine...
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Tryptophan hydroxylase (TPH) is an enzyme (EC 1.14.16.4) involved in the synthesis of the monoamine neurotransmitter serotonin. Tyrosine hydroxylase, phenylalanine...
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In enzymology, a tryptophan transaminase (EC 2.6.1.27) is an enzyme that catalyzes the chemical reaction L-tryptophan + 2-oxoglutarate ⇌ {\displaystyle...
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or placenta. In humans is encoded by the IDO1 gene. IDO is involved in tryptophan metabolism. It is one of three enzymes that catalyze the first and rate-limiting...
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dinucleotide (NAD+). Metabolites involved in the kynurenine pathway include tryptophan, kynurenine, kynurenic acid, xanthurenic acid, quinolinic acid, and 3-hydroxykynurenine...
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L-Tryptophan decarboxylase (EC 4.1.1.105) is an enzyme distinguished by the substrate L-tryptophan. This enzyme catalyzes the reaction of L-tryptophan to...
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enzymology, a tryptophan dimethylallyltransferase (EC 2.5.1.34) is an enzyme that catalyzes the chemical reaction dimethylallyl diphosphate + L-tryptophan ⇌ {\displaystyle...
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but not uptake of tryptophan. This lowers the ratio of these branched-chain amino acids in the bloodstream relative to tryptophan (an aromatic amino...
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In enzymology, a tryptophan dehydrogenase (EC 1.4.1.19) is an enzyme that catalyzes the chemical reaction L-tryptophan + NAD(P)+ + H2O ⇌ {\displaystyle...
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Tryptophan pyrrolase may refer to: Tryptophan 2,3-dioxygenase, an enzyme Indoleamine 2,3-dioxygenase, an enzyme This set index page lists enzyme articles...
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Showa Denko (section Tryptophan contamination)
manufactured tryptophan so that the bacteria would be more efficient. At the same time, they also changed the technique used to purify the tryptophan.: 327–328 ...
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Primary pellagra is due to a diet that does not contain enough niacin and tryptophan. Secondary pellagra is due to a poor ability to use the niacin within...
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In enzymology, a tryptophan-phenylpyruvate transaminase (EC 2.6.1.28) is an enzyme that catalyzes the chemical reaction: L-tryptophan + phenylpyruvate...
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enzymology, a D-tryptophan N-malonyltransferase (EC 2.3.1.112) is an enzyme that catalyzes the chemical reaction malonyl-CoA + D-tryptophan ⇌ {\displaystyle...
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enzymology, a D-tryptophan N-acetyltransferase (EC 2.3.1.34) is an enzyme that catalyzes the chemical reaction acetyl-CoA + D-tryptophan ⇌ {\displaystyle...
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Tryptophan 7-halogenase (EC 1.14.19.9, PrnA, RebH) is an enzyme with systematic name L-tryptophan:FADH2 oxidoreductase (7-halogenating). This enzyme catalyses...
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TPH2 (redirect from Tryptophan hydroxylase 2)
Tryptophan hydroxylase 2 (TPH2) is an isozyme of tryptophan hydroxylase found in vertebrates. In humans, TPH2 is primarily expressed in the serotonergic...
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Tryptophan synthase (indole-salvaging) (EC 4.2.1.122, tryptophan synthase beta2) is an enzyme with systematic name L-serine hydro-lyase (adding indole...
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Indoles are widely distributed in nature, most notably as amino acid tryptophan and neurotransmitter serotonin. Indole is a solid at room temperature...
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Acute tryptophan depletion (ATD) is a technique used extensively to study the effect of low serotonin in the brain. This experimental approach reduces...
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TPH1 (redirect from Tryptophan hydroxylase 1)
Tryptophan hydroxylase 1 (TPH1) is an isoenzyme of tryptophan hydroxylase which in humans is encoded by the TPH1 gene. TPH1 was first discovered to support...
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Blue diaper syndrome (redirect from Defective tryptophan absorption)
hypercalcemia. It is caused by a defect in tryptophan absorption. Bacterial degradation of unabsorbed tryptophan in the intestine leads to excessive indole...
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enzymology, a tryptophan 2-C-methyltransferase (EC 2.1.1.106) is an enzyme that catalyzes the chemical reaction S-adenosyl-L-methionine + L-tryptophan ⇌ {\displaystyle...
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