3-hydroxy-L-kynurenine
362,296 routes · scope human · up to 3 steps · built 5 October 2026 · Reactions · API
546 compounds within 3 steps: 5 in 1, 104 in 2, 437 in 3
Three steps
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- transport of alanine and ornithine (cytosol to extracellular)
- D-histidine(in) + L-ornithine(out) + H(+)(in) = D-histidine(out) + L-ornithine(in) + H(+)(out)
Catalysed by KYNU, SLC7A6, SLC25A2extracellular space, cytosol, inner side of the membrane, outer side of the membraneOne of 2 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- transport of alanine and arginine (cytosol to extracellular)
- L-homoarginine(in) + L-arginine(out) = L-homoarginine(out) + L-arginine(in)
Catalysed by KYNU, SLC7A6, SLC25A29extracellular space, cytosol, inner side of the membrane, outer side of the membraneOne of 4 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- transport of alanine and histidine (cytosol to extracellular)
- Formation of homocarnosine
Catalysed by KYNU, SLC7A6, CARNS1extracellular space, cytosol
- 3-hydroxy-L-kynurenine + glyoxylate = xanthurenate + glycine + H2O
- 5-phospho-beta-D-ribosylamine + glycine + ATP = N(1)-(5-phospho-beta-D-ribosyl)glycinamide + ADP + phosphate + H(+)
- N(1)-(5-phospho-beta-D-ribosyl)glycinamide + (6R)-10-formyltetrahydrofolate = N(2)-formyl-N(1)-(5-phospho-beta-D-ribosyl)glycinamide + (6S)-5,6,7,8-tetrahydrofolate + H(+)
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- transport of alanine and glutamine (cytosol to extracellular)
- N(2)-formyl-N(1)-(5-phospho-beta-D-ribosyl)glycinamide + L-glutamine + ATP + H2O = 2-formamido-N(1)-(5-O-phospho-beta-D-ribosyl)acetamidine + L-glutamate + ADP + phosphate + H(+)
Catalysed by KYNU, SLC3A2, SLC7A5, SLC7A10 and 1 moreextracellular space, cytosol
- L-kynurenine + NADPH + O2 + H(+) = 3-hydroxy-L-kynurenine + NADP(+) + H2O
- Transport of L-Kynurenine
- Chymase
Catalysed by KMO, SLC7A8, CMA1extracellular space, cytosolOne of 3 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- carnitine O-palmitoyltransferase ((7Z)-octadecenoyl-CoA)
Catalysed by KYNU, CPT1A, CPT1C, CPT1Bmitochondrial matrix, cytosolOne of 3 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- transport of alanine and threonine (cytosol to extracellular)
- L-threonine acetaldehyde-lyase (glycine-forming)
Catalysed by KYNU, SLC7A5extracellular space, cytosolOne of 2 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- Acetoacetate:CoA ligase (AMP-forming)
Catalysed by KYNU, AACSmitochondrial matrix, cytosolOne of 2 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- Acetyl-CoA:choline O-acetyltransferase
Catalysed by KYNU, CHATmitochondrial matrix, nucleusOne of 2 routes
- 3-hydroxy-L-kynurenine + glyoxylate = xanthurenate + glycine + H2O
- gamma-L-glutamyl-L-cysteine:glycine ligase (ADP-forming)
- transport of acetylcholine and GSH (cytosol to extracellular)
Catalysed by KYAT3, AADAT, GSS, SLCO1A2 and 1 morecytosol, extracellular spaceOne of 2 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- (R)-3-Amino-2-methylpropanoate:pyruvate aminotransferase
- transport of pyruvate and retinoate (cytosol to extracellular)
Catalysed by KYNU, AGXT2, SLC16A4, SLC16A5 and 4 moremitochondrial matrix, extracellular space, cytosolOne of 2 routes
- L-kynurenine + NADPH + O2 + H(+) = 3-hydroxy-L-kynurenine + NADP(+) + H2O
- Transport of L-Kynurenine
- L-phenylalanine,tetrahydrobiopterin:oxygen oxidoreductase(4-hydroxylating)
Catalysed by KMO, SLC7A8, PAHextracellular space, cytosolOne of 3 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- 5-aminolevulinate synthase (2-amino-3-oxoadipate)
Catalysed by KYNU, ALAS1, CPNE7mitochondrial matrixOne of 8 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- glycine N-acyltransferase (2-methylbutyryl-CoA)
Catalysed by KYNU, GLYAT, GLYATL2, GLYATL1mitochondrial matrixOne of 3 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- Production of Tiglylcarnitine
Catalysed by KYNU, CPT1A, CPT1Bmitochondrial matrix, cytosolOne of 2 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- acetyl-CoA C-acyltransferase (3-oxo-4-methyl-pentanoyl-CoA)
Catalysed by KYNU, HADHA, ACAA2, HADHBmitochondrial matrixOne of 3 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- glycine N-acyltransferase (isovalerylglycine)
Catalysed by KYNU, GLYAT, GLYATL2, GLYATL1mitochondrial matrixOne of 3 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- Arachidonate:CoA ligase (AMP-forming)
Catalysed by KYNU, SLC27A2, ACSL4, ACSL3 and 5 moremitochondrial matrix, cytosolOne of 11 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- propanoyl-CoA C-acyltransferase
Catalysed by KYNU, ACAA1, SCP2, MYO5Bmitochondrial matrix, peroxisomeOne of 2 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- Palmitate:CoA ligase (AMP-forming)
Catalysed by KYNU, SLC27A2, ACSL4, ACSL3 and 5 moremitochondrial matrix, cytosolOne of 11 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- Transport of octadecenoyl-CoA into Mitochondrial Matrix
Catalysed by KYNU, CPT1A, CPT1C, CPT1Bmitochondrial matrix, cytosolOne of 11 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- Phenylacetate:CoA ligase
Catalysed by KYNUmitochondrial matrix, cytosolOne of 4 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- Propanoate:CoA ligase (AMP-forming)
Catalysed by KYNU, ACSS3, ACSS2, ACSS1mitochondrial matrix, cytosolOne of 43 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- (R)-3-Amino-2-methylpropanoate:pyruvate aminotransferase
- (S)-malate + NAD(+) = pyruvate + CO2 + NADH
Catalysed by KYNU, AGXT2, ME2mitochondrial matrixOne of 4 routes
- 3-hydroxy-L-kynurenine + glyoxylate = xanthurenate + glycine + H2O
- 5,10-Methylenetetrahydrofolate:glycine hydroxymethyltransferase
- Formate:tetrahydrofolate ligase (ADP-forming)
Catalysed by KYAT3, AADAT, SHMT1, MTHFD1cytosolOne of 3 routes
- L-kynurenine + NADPH + O2 + H(+) = 3-hydroxy-L-kynurenine + NADP(+) + H2O
- Transport of L-Kynurenine
- (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin + L-phenylalanine + O2 = (4aS,6R)-4a-hydroxy-L-erythro-5,6,7,8-tetrahydrobiopterin + L-tyrosine
Catalysed by KMO, SLC7A8, PAHextracellular space, cytosolOne of 3 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- N-acetyl-LTE4 to leukotriene E4 conversion
Catalysed by KYNU, ZDHHC11B, NAA10, ESCO2 and 29 moremitochondrial matrix, cytosolOne of 6 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- N-alpha-acetyltransferase 10, NatA catalytic subunit (acetylcarnosine)
Catalysed by KYNU, NAA10mitochondrial matrix, cytosolOne of 3 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- diamine N-acetyltransferase (N1-acetylspermine)
Catalysed by KYNU, SAT1, SAT2mitochondrial matrix, cytosolOne of 2 routes
- L-kynurenine + NADPH + O2 + H(+) = 3-hydroxy-L-kynurenine + NADP(+) + H2O
- Transport of L-Kynurenine
- solute carrier (L-dopa)
Catalysed by KMO, SLC43A1, SLC3A2, SLC7A5extracellular space, cytosolOne of 5 routes
- 3-hydroxy-L-kynurenine + glyoxylate = xanthurenate + glycine + H2O
- gamma-L-glutamyl-L-cysteine:glycine ligase (ADP-forming)
- 2-bromoacetaldehyde:glutathione S-(formylmethyl)transferase
Catalysed by KYAT3, AADAT, GSS, MGST3 and 16 morecytosolOne of 2 routes
- 3-hydroxy-L-kynurenine + H2O = 3-hydroxyanthranilate + L-alanine + H(+)
- transport of alanine and glutamine (cytosol to extracellular)
- L-glutamine:D-fructose-6-phosphate isomerase (deaminating)
Catalysed by KYNU, SLC3A2, SLC7A5, SLC7A10 and 2 moreextracellular space, cytosol