hydrogen sulfide
362,296 routes · scope human · up to 3 steps · built 5 October 2026 · Reactions · API
562 compounds within 3 steps: 10 in 1, 125 in 2, 427 in 3
Three steps
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- transport of cysteine and phenylalanine (cytosol to extracellular)
- (5Z,8Z,11Z,14Z)-eicosatetraenoate + L-phenylalanine = N-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-L-phenylalanine + H2O
Catalysed by CBS, SLC7A5, PM20D1cytosol, extracellular space
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- transport of cysteine and leucine (cytosol to extracellular)
- N-(9Z-octadecenoyl)-L-leucine + H2O = L-leucine + (9Z)-octadecenoate
Catalysed by CBS, SLC7A9, SLC3A1, PM20D1cytosol, extracellular space
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- transport of cysteine and glycine (cytosol to extracellular)
- octadecanoyl-CoA + glycine = N-octadecanoylglycine + CoA + H(+)
Catalysed by CBS, SLC3A2, SLC7A5, SLC7A8 and 1 morecytosol, extracellular space
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- transport of cysteine and glycine (cytosol to extracellular)
- (9Z)-hexadecenoyl-CoA + glycine = N-(9Z-hexadecenoyl)-glycine + CoA + H(+)
Catalysed by CBS, SLC3A2, SLC7A5, SLC7A8 and 1 morecytosol, extracellular space
- a quinone + hydrogen sulfide + glutathione + H(+) = S-sulfanylglutathione + a quinol
- a quinol + 2 Fe(III)-[cytochrome c](out) = a quinone + 2 Fe(II)-[cytochrome c](out) + 2 H(+)(out)
- 2 a quinone + NADPH + H(+) = 2 a 1,4-benzosemiquinone + NADP(+)
Catalysed by SQOR, CYC1, UQCRFS1, CRYZ and 3 moreouter side of the membrane
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- L-cysteine hydrogen-sulfide-lyase (deaminating
- transport of acetoacetate and pyruvate (cytosol to mitochondria)
Catalysed by CBS, CTHcytosol, mitochondrial matrixOne of 4 routes
- thiosulfate + 2 glutathione = glutathione disulfide + hydrogen sulfide + sulfite + 2 H(+)
- (5S)-hydroperoxy-(6E,8Z,11Z,14Z)-eicosatetraenoate + 2 glutathione = (5S)-hydroxy-(6E,8Z,11Z,14Z)-eicosatetraenoate + glutathione disulfide + H2O
- (5S)-hydroxy-(6E,8Z,11Z,14Z)-eicosatetraenoate + O2 = (5S)-hydroxy-(15S)-hydroperoxy-(6E,8Z,11Z,13E)-eicosatetraenoate
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- transport of cysteine and glycine (cytosol to extracellular)
- hexadecanoyl-CoA + glycine = N-hexadecanoylglycine + CoA + H(+)
Catalysed by CBS, SLC3A2, SLC7A5, SLC7A8 and 1 morecytosol, extracellular space
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- transport of cysteine and glycine (cytosol to extracellular)
- dodecanoyl-CoA + glycine = N-dodecanoylglycine + CoA + H(+)
Catalysed by CBS, SLC3A2, SLC7A5, SLC7A8 and 1 morecytosol, extracellular space
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- transport of cysteine and glycine (cytosol to extracellular)
- decanoyl-CoA + glycine = N-decanoylglycine + CoA + H(+)
Catalysed by CBS, SLC3A2, SLC7A5, SLC7A8 and 1 morecytosol, extracellular space
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- transport of cysteine and glycine (cytosol to extracellular)
- octanoyl-CoA + glycine = N-octanoylglycine + CoA + H(+)
Catalysed by CBS, SLC3A2, SLC7A5, SLC7A8 and 1 morecytosol, extracellular space
- thiosulfate + 2 glutathione = glutathione disulfide + hydrogen sulfide + sulfite + 2 H(+)
- L-dehydroascorbate + 2 glutathione = glutathione disulfide + L-ascorbate
- N-(9Z,12Z,15Z)-octadecatrienoylglycine + 2 L-ascorbate + O2 = N-(9Z,12Z,15Z)-octadecatrienoyl-(2S)-hydroxyglycine + 2 monodehydro-L-ascorbate radical + H2O
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- transport of cysteine and ornithine (cytosol to extracellular)
- D-histidine(in) + L-ornithine(out) + H(+)(in) = D-histidine(out) + L-ornithine(in) + H(+)(out)
Catalysed by CBS, SLC7A6, SLC25A2cytosol, extracellular space, inner side of the membrane, outer side of the membraneOne of 2 routes
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- transport of arginine and cysteine (cytosol to extracellular)
- L-homoarginine(in) + L-arginine(out) = L-homoarginine(out) + L-arginine(in)
Catalysed by CBS, SLC7A6, SLC25A29cytosol, extracellular space, inner side of the membrane, outer side of the membraneOne of 4 routes
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- transport of cysteine and histidine (cytosol to extracellular)
- Formation of homocarnosine
Catalysed by CBS, SLC7A6, CARNS1cytosol, extracellular space
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- transport of cysteine and glycine (cytosol to extracellular)
- 5-phospho-beta-D-ribosylamine + glycine + ATP = N(1)-(5-phospho-beta-D-ribosyl)glycinamide + ADP + phosphate + H(+)
Catalysed by CBS, SLC3A2, SLC7A5, SLC7A8 and 1 morecytosol, extracellular space
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- thioredoxin-disulfide reductase (NADPH) (cystine)
- L-cystine-bis-glycine + 2 H2O = L-cystine + 2 glycine
Catalysed by CBS, TXNRD1, TXNRD3, TXNRD2 and 2 morecytosolOne of 3 routes
- hydrogen sulfide + 2 O2 = sulfate + H(+)
- a dicarboxylate(in) + sulfate(out) = a dicarboxylate(out) + sulfate(in)
- indoxyl sulfate(out) + a dicarboxylate(in) = indoxyl sulfate(in) + a dicarboxylate(out)
Catalysed by SOD1, SLC25A35, SLC25A34, SLC22A6 and 1 moreinner side of the membrane, outer side of the membraneOne of 2 routes
- thiosulfate + 2 glutathione = glutathione disulfide + hydrogen sulfide + sulfite + 2 H(+)
- (12S)-hydroperoxy-(5Z,8Z,10E,14Z)-eicosatetraenoate + 2 glutathione = (12S)-hydroxy-(5Z,8Z,10E,14Z)-eicosatetraenoate + glutathione disulfide + H2O
- (12S)-hydroxy-(5Z,8Z,10E,14Z)-eicosatetraenoate + O2 = (5S)-hydroperoxy-(12S)-hydroxy-(6E,8Z,10E,14Z)-eicosatetraenoate
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- transport of cysteine and glycine (cytosol to extracellular)
- glycyldehydrophenylalanine + H2O = 2,3-didehydrophenylalanine + glycine
Catalysed by CBS, SLC3A2, SLC7A5, SLC7A8 and 1 morecytosol, extracellular space
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- transport of cysteine 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 CBS, SLC3A2, SLC7A5, SLC7A10 and 1 morecytosol, extracellular space
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- transport of cysteine and phenylalanine (cytosol to extracellular)
- Chymase
Catalysed by CBS, SLC7A5, CMA1cytosol, extracellular spaceOne of 3 routes
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- transport of cysteine and glycine (cytosol to extracellular)
- a fatty acyl-CoA + glycine = an N-(fatty acyl)-glycine + CoA + H(+)
Catalysed by CBS, SLC3A2, SLC7A5, SLC7A8 and 1 morecytosol, extracellular space
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- transport of cysteine and glycine (cytosol to extracellular)
- (9Z,12Z)-octadecadienoyl-CoA + glycine = N-(9Z,12Z-octadecadienoyl)-glycine + CoA + H(+)
Catalysed by CBS, SLC3A2, SLC7A5, SLC7A8 and 1 morecytosol, extracellular space
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- N-acetylglutamate synthase (N-acetyl-L-cysteine)
- carnitine O-palmitoyltransferase ((7Z)-octadecenoyl-CoA)
Catalysed by CBS, NAGS, CPT1A, CPT1C and 1 morecytosol, mitochondrial matrixOne of 3 routes
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- N-acetylglutamate synthase (N-acetyl-L-cysteine)
- Acetoacetate:CoA ligase (AMP-forming)
Catalysed by CBS, NAGS, AACScytosol, mitochondrial matrixOne of 2 routes
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- N-acetylglutamate synthase (N-acetyl-L-cysteine)
- Acetyl-CoA:choline O-acetyltransferase
Catalysed by CBS, NAGS, CHATcytosol, mitochondrial matrix, nucleusOne of 2 routes
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- cystine to cysteine conversion
- transport of acetylcholine and GSH (cytosol to extracellular)
Catalysed by CBS, SLCO1A2, SLCO1B3cytosol, extracellular spaceOne of 4 routes
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- L-cysteine hydrogen-sulfide-lyase (deaminating
- transport of pyruvate and retinoate (cytosol to extracellular)
Catalysed by CBS, CTH, SLC16A4, SLC16A5 and 4 morecytosol, extracellular spaceOne of 2 routes
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- transport of cysteine and tryptophan (cytosol to extracellular)
- L-tryptophan,tetrahydrobiopterin:oxygen oxidoreductase(5-hydroxylating)
Catalysed by CBS, SLC7A5, TPH1, TPH2cytosol, extracellular spaceOne of 3 routes
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- N-acetylglutamate synthase (N-acetyl-L-cysteine)
- 5-aminolevulinate synthase (2-amino-3-oxoadipate)
Catalysed by CBS, NAGS, ALAS1, CPNE7cytosol, mitochondrial matrixOne of 8 routes
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- N-acetylglutamate synthase (N-acetyl-L-cysteine)
- glycine N-acyltransferase (2-methylbutyryl-CoA)
Catalysed by CBS, NAGS, GLYAT, GLYATL2 and 1 morecytosol, mitochondrial matrixOne of 2 routes
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- N-acetylglutamate synthase (N-acetyl-L-cysteine)
- Production of Tiglylcarnitine
Catalysed by CBS, NAGS, CPT1A, CPT1Bcytosol, mitochondrial matrixOne of 2 routes
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- N-acetylglutamate synthase (N-acetyl-L-cysteine)
- acetyl-CoA C-acyltransferase (3-oxo-4-methyl-pentanoyl-CoA)
Catalysed by CBS, NAGS, HADHA, ACAA2 and 1 morecytosol, mitochondrial matrixOne of 3 routes
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- N-acetylglutamate synthase (N-acetyl-L-cysteine)
- glycine N-acyltransferase (isovalerylglycine)
Catalysed by CBS, NAGS, GLYAT, GLYATL2 and 1 morecytosol, mitochondrial matrixOne of 3 routes
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- N-acetylglutamate synthase (N-acetyl-L-cysteine)
- Arachidonate:CoA ligase (AMP-forming)
Catalysed by CBS, NAGS, SLC27A2, ACSL4 and 6 morecytosol, mitochondrial matrixOne of 11 routes
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- N-acetylglutamate synthase (N-acetyl-L-cysteine)
- propanoyl-CoA C-acyltransferase
Catalysed by CBS, NAGS, ACAA1, SCP2 and 1 morecytosol, mitochondrial matrix, peroxisomeOne of 3 routes
- L-serine hydro-lyase (adding hydrogen sulfide, L-cysteine-forming)
- N-acetylglutamate synthase (N-acetyl-L-cysteine)
- Palmitate:CoA ligase (AMP-forming)
Catalysed by CBS, NAGS, SLC27A2, ACSL4 and 6 morecytosol, mitochondrial matrixOne of 11 routes