Page last updated: 2024-10-06

Tryptophan degradation ( Tryptophan degradation )

Proteins (64)

ProteinSynonymsTaxonomy
CatalaseEC 1.11.1.6Homo sapiens (human)
Cytochrome P450 4B1EC 1.14.14.1; CYPIVB1; Cytochrome P450-HPHomo sapiens (human)
Cytochrome P450 2F1EC 1.14.14.1; CYPIIF1Homo sapiens (human)
Trifunctional enzyme subunit alpha, mitochondrial78 kDa gastrin-binding protein; Monolysocardiolipin acyltransferase; 2.3.1.-; TP-alphaHomo sapiens (human)
4-trimethylaminobutyraldehyde dehydrogenaseTMABA-DH; TMABALDH; EC 1.2.1.47; Aldehyde dehydrogenase E3 isozyme; Aldehyde dehydrogenase family 9 member A1; 1.2.1.3; Gamma-aminobutyraldehyde dehydrogenase; 1.2.1.19; R-aminobutyraldehyde dehydrogenaseHomo sapiens (human)
Aldehyde dehydrogenase family 3 member A2EC 1.2.1.3; EC 1.2.1.94; Aldehyde dehydrogenase 10; Fatty aldehyde dehydrogenase; Microsomal aldehyde dehydrogenaseHomo sapiens (human)
Cytochrome P450 4F8EC 1.14.14.1; CYPIVF8Homo sapiens (human)
2-amino-3-carboxymuconate-6-semialdehyde decarboxylaseEC 4.1.1.45; Picolinate carboxylaseHomo sapiens (human)
Glutaryl-CoA dehydrogenase, mitochondrialGCD; EC 1.3.8.6Homo sapiens (human)
3-hydroxyacyl-CoA dehydrogenase type-2 EC 1.1.1.35; 17-beta-estradiol 17-dehydrogenase; 1.1.1.62; 2-methyl-3-hydroxybutyryl-CoA dehydrogenase; MHBD; 3-alpha-(17-beta)-hydroxysteroid dehydrogenase (NAD(+)); 1.1.1.239; 3-hydroxy-2-methylbutyryl-CoA dehydrogenase; 1.1.1.178; 3-hydroxyacyl-CoA dehHomo sapiens (human)
Cytochrome P450 1A2EC 1.14.14.1; CYPIA2; Cholesterol 25-hydroxylase; Cytochrome P(3)450; Cytochrome P450 4; Cytochrome P450-P3; Hydroperoxy icosatetraenoate dehydratase; 4.2.1.152Homo sapiens (human)
Cytochrome P450 3A4EC 1.14.14.1; 1,4-cineole 2-exo-monooxygenase; 1,8-cineole 2-exo-monooxygenase; 1.14.14.56; Albendazole monooxygenase (sulfoxide-forming); 1.14.14.73; Albendazole sulfoxidase; CYPIIIA3; CYPIIIA4; Cholesterol 25-hydroxylase; Cytochrome P450 3A3; CytochromeHomo sapiens (human)
Cytochrome P450 2C8EC 1.14.14.1; CYPIIC8; Cytochrome P450 IIC2; Cytochrome P450 MP-12; Cytochrome P450 MP-20; Cytochrome P450 form 1; S-mephenytoin 4-hydroxylaseHomo sapiens (human)
Cytochrome P450 2D6EC 1.14.14.-; CYPIID6; Cholesterol 25-hydroxylase; Cytochrome P450-DB1; Debrisoquine 4-hydroxylaseHomo sapiens (human)
Cytochrome P450 2C9 EC 1.14.14.1; (R)-limonene 6-monooxygenase; 1.14.14.53; (S)-limonene 6-monooxygenase; 1.14.14.51; (S)-limonene 7-monooxygenase; 1.14.14.52; CYPIIC9; Cholesterol 25-hydroxylase; Cytochrome P-450MP; Cytochrome P450 MP-4; Cytochrome P450 MP-8; Cytochrome P45Homo sapiens (human)
Cytochrome P450 2B6EC 1.14.13.-; 1,4-cineole 2-exo-monooxygenase; CYPIIB6; Cytochrome P450 IIB1Homo sapiens (human)
Cytochrome P450 3A5EC 1.14.14.1; CYPIIIA5; Cytochrome P450-PCN3Homo sapiens (human)
Amine oxidase [flavin-containing] AEC 1.4.3.4; Monoamine oxidase type A; MAO-AHomo sapiens (human)
Cytochrome P450 2C19EC 1.14.14.1; (R)-limonene 6-monooxygenase; 1.14.14.53; (S)-limonene 6-monooxygenase; 1.14.14.51; (S)-limonene 7-monooxygenase; 1.14.14.52; CYPIIC17; CYPIIC19; Cytochrome P450-11A; Cytochrome P450-254C; Fenbendazole monooxygenase (4'-hydroxylating); 1.14.Homo sapiens (human)
Enoyl-CoA hydratase, mitochondrialEC 4.2.1.17; Enoyl-CoA hydratase 1; Short-chain enoyl-CoA hydratase; SCEHHomo sapiens (human)
Cytochrome P450 2A13EC 1.14.14.1; CYPIIA13Homo sapiens (human)
Cytochrome P450 1A1CYPIA1; EC 1.14.14.1; Cytochrome P450 form 6; Cytochrome P450-C; Cytochrome P450-P1; Hydroperoxy icosatetraenoate dehydratase; 4.2.1.152Homo sapiens (human)
Cytochrome P450 2E1EC 1.14.14.1; 4-nitrophenol 2-hydroxylase; 1.14.13.n7; CYPIIE1; Cytochrome P450-JHomo sapiens (human)
Cytochrome P450 2A6EC 1.14.13.-; 1,4-cineole 2-exo-monooxygenase; CYPIIA6; Coumarin 7-hydroxylase; Cytochrome P450 IIA3; Cytochrome P450(I)Homo sapiens (human)
AromataseEC 1.14.14.14; CYPXIX; Cytochrome P-450AROM; Cytochrome P450 19A1; Estrogen synthaseHomo sapiens (human)
Indoleamine 2,3-dioxygenase 1IDO-1; EC 1.13.11.52; Indoleamine-pyrrole 2,3-dioxygenaseHomo sapiens (human)
Cytochrome P450 3A7EC 1.14.14.1; CYPIIIA7; Cytochrome P450-HFLA; P450HLp2Homo sapiens (human)
Amine oxidase [flavin-containing] BEC 1.4.3.4; Monoamine oxidase type B; MAO-BHomo sapiens (human)
E3 ubiquitin-protein ligase Mdm2EC 2.3.2.27; Double minute 2 protein; Hdm2; Oncoprotein Mdm2; RING-type E3 ubiquitin transferase Mdm2; p53-binding protein Mdm2Homo sapiens (human)
Cytochrome P450 1B1EC 1.14.14.1; CYPIB1; Hydroperoxy icosatetraenoate dehydratase; 4.2.1.152Homo sapiens (human)
Cytochrome P450 2A7EC 1.14.14.1; CYPIIA7; Cytochrome P450 IIA4Homo sapiens (human)
Cytochrome P450 4F12EC 1.14.14.1; CYPIVF12Homo sapiens (human)
Retinal dehydrogenase 1RALDH 1; RalDH1; EC 1.2.1.-; EC 1.2.1.36; ALDH-E1; ALHDII; Aldehyde dehydrogenase family 1 member A1; Aldehyde dehydrogenase, cytosolicHomo sapiens (human)
Aldehyde dehydrogenase, mitochondrialEC 1.2.1.3; ALDH class 2; ALDH-E2; ALDHIHomo sapiens (human)
Tryptophan 5-hydroxylase 1EC 1.14.16.4; Tryptophan 5-monooxygenase 1Homo sapiens (human)
KynureninaseEC 3.7.1.3; L-kynurenine hydrolaseHomo sapiens (human)
Cytochrome P450 3A43 EC 1.14.14.1Homo sapiens (human)
Serotonin N-acetyltransferaseSerotonin acetylase; EC 2.3.1.87; Aralkylamine N-acetyltransferase; AA-NATHomo sapiens (human)
Retina-specific copper amine oxidaseRAO; EC 1.4.3.21; Amine oxidase [copper-containing]; Semicarbazide-sensitive amine oxidase; SSAOHomo sapiens (human)
Tryptophan 2,3-dioxygenaseTDO; EC 1.13.11.11; Tryptamin 2,3-dioxygenase; Tryptophan oxygenase; TO; TRPO; Tryptophan pyrrolase; TryptophanaseHomo sapiens (human)
Cytochrome P450 2J2EC 1.14.14.-; Albendazole monooxygenase (hydroxylating); 1.14.14.74; Albendazole monooxygenase (sulfoxide-forming); 1.14.14.73; Arachidonic acid epoxygenase; CYPIIJ2; Hydroperoxy icosatetraenoate isomerase; 5.4.4.7Homo sapiens (human)
Aldehyde oxidaseEC 1.2.3.1; Aldehyde oxidase 1; Azaheterocycle hydroxylase; 1.17.3.-Homo sapiens (human)
Membrane primary amine oxidaseEC 1.4.3.21; Copper amine oxidase; HPAO; Semicarbazide-sensitive amine oxidase; SSAO; Vascular adhesion protein 1; VAP-1Homo sapiens (human)
Cytochrome P450 2C18EC 1.14.14.1; CYPIIC18; Cytochrome P450-6b/29cHomo sapiens (human)
Cytochrome P450 4F11CYPIVF11; EC 1.14.14.1; 3-hydroxy fatty acids omega-hydroxylase CYP4F11; Docosahexaenoic acid omega-hydroxylase; 1.14.14.79; Long-chain fatty acid omega-monooxygenase; 1.14.14.80; Phylloquinone omega-hydroxylase CYP4F11; 1.14.14.78Homo sapiens (human)
Kynurenine formamidaseKFA; KFase; EC 3.5.1.9; Arylformamidase; N-formylkynurenine formamidase; FKFHomo sapiens (human)
Peroxisomal bifunctional enzymePBE; PBFE; L-bifunctional protein; LBP; Multifunctional enzyme 1; MFE1Homo sapiens (human)
Kynurenine 3-monooxygenaseEC 1.14.13.9; Kynurenine 3-hydroxylaseHomo sapiens (human)
Retinal dehydrogenase 2RALDH 2; RalDH2; EC 1.2.1.36; Aldehyde dehydrogenase family 1 member A2; Retinaldehyde-specific dehydrogenase type 2; RALDH(II)Homo sapiens (human)
Indolethylamine N-methyltransferaseIndolamine N-methyltransferase; EC 2.1.1.49; EC 2.1.1.96; Aromatic alkylamine N-methyltransferase; Amine N-methyltransferase; Arylamine N-methyltransferase; Thioether S-methyltransferase; TEMTHomo sapiens (human)
Amiloride-sensitive amine oxidase [copper-containing]DAO; Diamine oxidase; EC 1.4.3.22; Amiloride-binding protein 1; Amine oxidase copper domain-containing protein 1; Histaminase; Kidney amine oxidase; KAOHomo sapiens (human)
Aromatic-L-amino-acid decarboxylaseAADC; EC 4.1.1.28; DOPA decarboxylase; DDCHomo sapiens (human)
Acetyl-CoA acetyltransferase, mitochondrialEC 2.3.1.9; Acetoacetyl-CoA thiolase; T2Homo sapiens (human)
Aldehyde dehydrogenase X, mitochondrialEC 1.2.1.3; Aldehyde dehydrogenase 5; Aldehyde dehydrogenase family 1 member B1Homo sapiens (human)
3-hydroxyanthranilate 3,4-dioxygenaseEC 1.13.11.6; 3-hydroxyanthranilate oxygenase; 3-HAO; h3HAO; 3-hydroxyanthranilic acid dioxygenase; HADHomo sapiens (human)
Ubiquitin-protein ligase E3AEC 2.3.2.26; E6AP ubiquitin-protein ligase; HECT-type ubiquitin transferase E3A; Human papillomavirus E6-associated protein; Oncogenic protein-associated protein E6-AP; Renal carcinoma antigen NY-REN-54Homo sapiens (human)
Acetylserotonin O-methyltransferaseEC 2.1.1.4; Hydroxyindole O-methyltransferase; HIOMTHomo sapiens (human)
Acetyl-CoA acetyltransferase, cytosolicEC 2.3.1.9; Acetyl-CoA transferase-like protein; Cytosolic acetoacetyl-CoA thiolaseHomo sapiens (human)
Tryptophan--tRNA ligase, cytoplasmicEC 6.1.1.2; Interferon-induced protein 53; IFP53; Tryptophanyl-tRNA synthetase; TrpRS; hWRSHomo sapiens (human)
Alpha-aminoadipic semialdehyde dehydrogenaseAlpha-AASA dehydrogenase; EC 1.2.1.31; Aldehyde dehydrogenase family 7 member A1; 1.2.1.3; Antiquitin-1; Betaine aldehyde dehydrogenase; 1.2.1.8; Delta1-piperideine-6-carboxylate dehydrogenase; P6c dehydrogenaseHomo sapiens (human)
Transcriptional repressor NF-X1EC 2.3.2.-; Nuclear transcription factor, X box-binding protein 1Homo sapiens (human)
Hydroxyacyl-coenzyme A dehydrogenase, mitochondrialHCDH; EC 1.1.1.35; Medium and short-chain L-3-hydroxyacyl-coenzyme A dehydrogenase; Short-chain 3-hydroxyacyl-CoA dehydrogenaseHomo sapiens (human)
E3 ubiquitin-protein ligase RNF25EC 2.3.2.27; RING finger protein 25; RING-type E3 ubiquitin transferase RNF25Homo sapiens (human)
Tryptophan--tRNA ligase, mitochondrialEC 6.1.1.2; (Mt)TrpRS; Tryptophanyl-tRNA synthetase; TrpRSHomo sapiens (human)

Compounds (48)

CompoundDescription
phosphoric acidconcise etchant is 37% H3PO4
diphosphoric acid
sapropterinRN given refers to parent cpd; co-factor required for catalytic activity of nitric oxide synthases
ammonium hydroxideThe hydroxy salt of ammonium ion. It is formed when AMMONIA reacts with water molecules in solution.
Carbon DioxideA colorless, odorless gas that can be formed by the body and is necessary for the respiration cycle of plants and animals.
s-adenosylmethioninePhysiologic methyl radical donor involved in enzymatic transmethylation reactions and present in all living organisms. It possesses anti-inflammatory activity and has been used in treatment of chronic liver disease. (From Merck, 11th ed)
NADH
5-hydroxytryptophanThe immediate precursor in the biosynthesis of SEROTONIN from tryptophan. It is used as an antiepileptic and antidepressant.
Adenosine TriphosphateAn adenine nucleotide containing three phosphate groups esterified to the sugar moiety. In addition to its crucial roles in metabolism adenosine triphosphate is a neurotransmitter.
adenosine diphosphateAdenosine 5'-(trihydrogen diphosphate). An adenine nucleotide containing two phosphate groups esterified to the sugar moiety at the 5'-position.
adenosine monophosphateAdenine nucleotide containing one phosphate group esterified to the sugar moiety in the 2'-, 3'-, or 5'-position.
tryptophanAn essential amino acid that is necessary for normal growth in infants and for NITROGEN balance in adults. It is a precursor of INDOLE ALKALOIDS in plants. It is a precursor of SEROTONIN (hence its use as an antidepressant and sleep aid). It can be a precursor to NIACIN, albeit inefficiently, in mammals.
glycineA non-essential amino acid. It is found primarily in gelatin and silk fibroin and used therapeutically as a nutrient. It is also a fast inhibitory neurotransmitter.
Hydrogen PeroxideA strong oxidizing agent used in aqueous solution as a ripening agent, bleach, and topical anti-infective. It is relatively unstable and solutions deteriorate over time unless stabilized by the addition of acetanilide or similar organic materials.
melatoninA biogenic amine that is found in animals and plants. In mammals, melatonin is produced by the PINEAL GLAND. Its secretion increases in darkness and decreases during exposure to light. Melatonin is implicated in the regulation of SLEEP, mood, and REPRODUCTION. Melatonin is also an effective antioxidant.
WaterA clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
OxygenAn element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration.
4a-carbinolamine tetrahydrobiopterinstructure given in first source
quinolinic acidA metabolite of tryptophan with a possible role in neurodegenerative disorders. Elevated CSF levels of quinolinic acid are correlated with the severity of neuropsychological deficits in patients who have AIDS.
tryptamineRN given refers to parent cpd
3-hydroxykynurenine, (L)-isomer
kynurenineA metabolite of the essential amino acid tryptophan metabolized via the tryptophan-kynurenine pathway.
hydroxyindoleacetic acid
6-hydroxymelatonin
anthranilic acidRN given refers to parent cpd; structure in Negwer, 5th ed, #565
formic acidRN given refers to parent cpd
glutaryl-coenzyme a
n'-formylkynureninea photochemical breakdown product of tryptophan in proteins; RN given refers to parent cpd without isomeric designation
SerotoninA biochemical messenger and regulator, synthesized from the essential amino acid L-TRYPTOPHAN. In humans it is found primarily in the central nervous system, gastrointestinal tract, and blood platelets. Serotonin mediates several important physiological functions including neurotransmission, gastrointestinal motility, hemostasis, and cardiovascular integrity. Multiple receptor families (RECEPTORS, SEROTONIN) explain the broad physiological actions and distribution of this biochemical mediator.
crotonyl-coenzyme a
NADA coenzyme composed of ribosylnicotinamide 5'-diphosphate coupled to adenosine 5'-phosphate by pyrophosphate linkage. It is found widely in nature and is involved in numerous enzymatic reactions in which it serves as an electron carrier by being alternately oxidized (NAD+) and reduced (NADH). (Dorland, 27th ed)
alanineA non-essential amino acid that occurs in high levels in its free state in plasma. It is produced from pyruvate by transamination. It is involved in sugar and acid metabolism, increases IMMUNITY, and provides energy for muscle tissue, BRAIN, and the CENTRAL NERVOUS SYSTEM.
n-methyltryptamineRN given refers to parent cpd
indole-3-acetaldehyde
indoleacetic acidRN given refers to unlabeled parent cpd; structure in Merck Index, 9th ed, #4841
3-hydroxyanthranilic acidAn oxidation product of tryptophan metabolism. It may be a free radical scavenger and a carcinogen.
3-hydroxybutyryl-coenzyme A, (S)-isomer
cinnabarinic acidstructure
n-methylserotoninRN given refers to parent cpd
5-hydroxykynuramineRN given refers to parent cpd; structure
5-methoxyindoleacetic acidserotonin metabolite
s-adenosylhomocysteine5'-S-(3-Amino-3-carboxypropyl)-5'-thioadenosine. Formed from S-adenosylmethionine after transmethylation reactions.
acetyl coenzyme aAcetyl CoA participates in the biosynthesis of fatty acids and sterols, in the oxidation of fatty acids and in the metabolism of many amino acids. It also acts as a biological acetylating agent.
creolinfrom refined coal tar oils
hydroxyindoleacetaldehyde
coenzyme a
n-acetylserotonin
acetoacetyl coa