histamine
362,296 routes · scope human · up to 3 steps · built 5 October 2026 · Reactions · API
286 compounds within 3 steps: 5 in 1, 60 in 2, 221 in 3
Three steps
- transport of histamine (cytosol to extracellular)
- transport of serotonin (cytosol to extracellular)
- 5-hydroxy-L-tryptophan + H(+) = serotonin + CO2
Catalysed by SLCO1A2, SLCO1B3, DDCextracellular space, cytosol
- transport of histamine (cytosol to extracellular)
- transport of prostaglandin E1 (cytosol to extracellular)
- prostaglandin E1 + NADPH + H(+) = prostaglandin F1 + NADP(+)
Catalysed by SLCO1A2, SLCO1B3, SLCO1B1, DHRS1extracellular space, cytosol
- transport of GSH and histamine (cytosol to extracellular)
- cystine to cysteine conversion
- transport of cysteine and tyrosine (cytosol to extracellular)
Catalysed by SLCO1A2, SLCO1B3, SLC7A5extracellular space, cytosolOne of 13 routes
- L-histidine + H(+) = histamine + CO2
- L-histidine(out) + L-arginine(in) + Na(+)(out) = L-histidine(in) + L-arginine(out) + Na(+)(in)
- Transport by Y+Lat-2 into Extracellular Space
Catalysed by HDC, SLC7A6, SLC3A2inner side of the membrane, outer side of the membrane, extracellular space, cytosol
- transport of histamine (cytosol to extracellular)
- transport of estrone 3-sulfate (cytosol to extracellular)
- butanoate(out) + estrone 3-sulfate(in) = butanoate(in) + estrone 3-sulfate(out)
Catalysed by SLCO1A2, SLCO1B3, SLCO1B1, SLC22A9extracellular space, cytosol, inner side of the membrane, outer side of the membraneOne of 4 routes
- L-histidine + H(+) = histamine + CO2
- L-histidine(in) + L-phenylalanine(out) = L-histidine(out) + L-phenylalanine(in)
- Phenylalanine Transaminase, Mitochondrial
Catalysed by HDC, SLC7A8, GOT2, TATinner side of the membrane, outer side of the membrane, mitochondrial matrixOne of 5 routes
- transport of GSH and histamine (cytosol to extracellular)
- cystine to cysteine conversion
- transport of cysteine and lysine (cytosol to extracellular)
Catalysed by SLCO1A2, SLCO1B3, SLC7A6extracellular space, cytosolOne of 12 routes
- transport of GSH and histamine (cytosol to extracellular)
- cystine to cysteine conversion
- transport of cysteine and glutamine (cytosol to extracellular)
Catalysed by SLCO1A2, SLCO1B3, SLC3A2, SLC7A5 and 1 moreextracellular space, cytosolOne of 18 routes
- transport of histamine (cytosol to extracellular)
- transport of noradrenaline (cytosol to extracellular)
- (R)-noradrenaline + O2 + H2O = (R)-3,4-dihydroxymandelaldehyde + H2O2 + NH4(+)
Catalysed by SLCO1A2, SLCO1B3, MAOA, MAOBextracellular space, cytosol
- transport of GSH and histamine (cytosol to extracellular)
- gamma-glutamyltransferase (alanine)
- gamma-glutamylcyclotransferase ((5-L-glutamyl)-L-amino acid)
Catalysed by SLCO1A2, SLCO1B3, GGT1, GGT5 and 6 moreextracellular space, cytosol
- L-histidine + H(+) = histamine + CO2
- L-histidine(in) + L-phenylalanine(out) = L-histidine(out) + L-phenylalanine(in)
- L-phenylalanine carboxy-lyase (phenylethylamine-forming)
Catalysed by HDC, SLC7A8, DDCinner side of the membrane, outer side of the membrane, cytosol
- transport of histamine (cytosol to extracellular)
- transport of noradrenaline (cytosol to extracellular)
- S-Adenosyl-L-methionine:catechol O-methyltransferase
Catalysed by SLCO1A2, SLCO1B3, COMT, LRTOMTextracellular space, cytosol
- L-histidine + H(+) = histamine + CO2
- L-histidine(in) + L-phenylalanine(out) = L-histidine(out) + L-phenylalanine(in)
- S-methylmercury-L-cysteine(in) + L-phenylalanine(out) = S-methylmercury-L-cysteine(out) + L-phenylalanine(in)
Catalysed by HDC, SLC7A8inner side of the membrane, outer side of the membraneOne of 2 routes
- transport of GSH and histamine (cytosol to extracellular)
- Formation of Homocystine
- 5-methyltetrahydrofolate:L-homocysteine S-methyltransferase
Catalysed by SLCO1A2, SLCO1B3, MTRextracellular space, cytosol
- transport of GSH and histamine (cytosol to extracellular)
- cystine to cysteine conversion
- S-sulfanyl-L-cysteine + L-cysteine = S-disulfanyl-L-cysteine + L-alanine
Catalysed by SLCO1A2, SLCO1B3, CARS2extracellular space, cytosol
- transport of histamine (cytosol to extracellular)
- transport of arachidonate (cytosol to extracellular)
- (5Z,8Z,11Z,14Z)-eicosatetraenoate + UDP-alpha-D-glucuronate = O-[(5Z),(8Z),(11Z),(14Z)-eicosatetraenoyl]-beta-D-glucuronate + UDP
Catalysed by SLCO1A2, SLCO1B3, SLCO1B1, UGT1A9 and 5 moreextracellular space, cytosol
- transport of histamine (cytosol to extracellular)
- Resistance-Nodulation-Cell Division (Rnd) Tcdb:2.A.60.1.5
- 20-hydroxy-(5Z,8Z,11Z,14Z)-eicosatetraenoate + UDP-alpha-D-glucuronate = 20-O-(beta-D-glucuronosyl)-(5Z,8Z,11Z,14Z)-eicosatetraenoate + UDP + H(+)
Catalysed by SLCO1A2, SLCO1B3, SLCO1B1, UGT2B7 and 2 moreextracellular space, cytosol
- transport of histamine (cytosol to extracellular)
- transport of prostaglandin B1 (cytosol to extracellular)
- prostaglandin B1 + UDP-alpha-D-glucuronate = 15-O-(beta-D-glucuronosyl)-prostaglandin B1 + UDP + H(+)
Catalysed by SLCO1A2, SLCO1B3, SLCO1B1, UGT1A9 and 3 moreextracellular space, cytosol
- transport of histamine (cytosol to extracellular)
- transport of serotonin (cytosol to extracellular)
- serotonin + 3'-phosphoadenylyl sulfate = serotonin O-sulfate + adenosine 3',5'-bisphosphate + H(+)
Catalysed by SLCO1A2, SLCO1B3, SULT1A3, SULT1A4extracellular space, cytosol
- transport of histamine (cytosol to extracellular)
- transport of noradrenaline (cytosol to extracellular)
- sulfotransferase (noradrenaline)
Catalysed by SLCO1A2, SLCO1B3, SULT1A3extracellular space, cytosolOne of 2 routes
- transport of GSH and histamine (cytosol to extracellular)
- Formation of Homocystine
- arylesterase (homocysteine-thiolactone)
Catalysed by SLCO1A2, SLCO1B3, PON1, PON2 and 1 moreextracellular space, cytosol
- transport of histamine (cytosol to extracellular)
- transport of S-glutathionyl-2-4-dinitrobenzene (cytosol to extracellular)
- ursodeoxycholate + 3'-phosphoadenylyl sulfate = ursodeoxycholate 3-sulfate + adenosine 3',5'-bisphosphate + H(+)
Catalysed by SLCO1A2, SLCO1B3, SULT2A1extracellular space, cytosol
- transport of histamine (cytosol to extracellular)
- transport of S-glutathionyl-2-4-dinitrobenzene (cytosol to extracellular)
- tauroursodeoxycholate + 3'-phosphoadenylyl sulfate = tauroursodeoxycholate 3-sulfate + adenosine 3',5'-bisphosphate + H(+)
Catalysed by SLCO1A2, SLCO1B3, SULT2A1extracellular space, cytosol
- transport of histamine (cytosol to extracellular)
- transport of glycoursodeoxycholate (cytosol to extracellular)
- glycoursodeoxycholate + 3'-phosphoadenylyl sulfate = glycoursodeoxycholate 3-sulfate + adenosine 3',5'-bisphosphate + H(+)
Catalysed by SLCO1A2, SLCO1B3, SULT2A1extracellular space, cytosol
- transport of histamine (cytosol to extracellular)
- solute carrier organic anion transporter (chenodiol)
- chenodeoxycholate + 3'-phosphoadenylyl sulfate = chenodeoxycholate 3-sulfate + adenosine 3',5'-bisphosphate + H(+)
Catalysed by SLCO1A2, SLCO1B3, SULT2A1extracellular space, cytosol
- transport of histamine (cytosol to extracellular)
- solute carrier organic anion transporter (cholate)
- cytochrome P450 (cholate)
Catalysed by SLCO1A2, SLCO1B3, CYP7A1extracellular space, cytosolOne of 4 routes
- transport of histamine (cytosol to extracellular)
- transport of serotonin (cytosol to extracellular)
- transport of serotonin (cytosol to extracellular)
Catalysed by SLCO1A2, SLCO1B3, SLC6A4extracellular space, cytosol
- transport of histamine (cytosol to extracellular)
- transport of arachidonate (cytosol to extracellular)
- fatty acylamide amidohydrolase
Catalysed by SLCO1A2, SLCO1B3, SLCO1B1, FAAHextracellular space, cytosol
- transport of histamine (cytosol to extracellular)
- transport of dopamine (cytosol to extracellular)
- monoamine oxidase (dopamine)
Catalysed by SLCO1A2, SLCO1B3, AOC2, AOC1 and 3 moreextracellular space, cytosolOne of 2 routes
- transport of histamine (cytosol to extracellular)
- transport of dehydroepiandrosterone sulfate (cytosol to extracellular)
- 3beta-Hydroxyandrost-5-en-17-one 3-sulfate sulfohydrolase
Catalysed by SLCO1A2, SLCO1B3, SLCO1B1, STSextracellular space, cytosolOne of 3 routes
- transport of histamine (cytosol to extracellular)
- solute carrier organic anion transporter (chenodiol)
- chenodeoxycholate:CoA ligase (AMP-forming)
Catalysed by SLCO1A2, SLCO1B3, SLC27A5extracellular space, cytosolOne of 3 routes
- transport of histamine (cytosol to extracellular)
- transport of noradrenaline (cytosol to extracellular)
- S-Adenosyl-L-methionine:phenylethanolamine N-methyltransferase
Catalysed by SLCO1A2, SLCO1B3, PNMTextracellular space, cytosol
- transport of GSH and histamine (cytosol to extracellular)
- cystine to cysteine conversion
- N-acetylglutamate synthase (N-acetyl-L-cysteine)
Catalysed by SLCO1A2, SLCO1B3, NAGSextracellular space, cytosol, mitochondrial matrix
- transport of histamine (cytosol to extracellular)
- transport of prostaglandin E2 (cytosol to extracellular)
- prostaglandin E2(out) + a dicarboxylate(in) = prostaglandin E2(in) + a dicarboxylate(out)
Catalysed by SLCO1A2, SLCO1B3, SLC22A6extracellular space, cytosol, inner side of the membrane, outer side of the membraneOne of 4 routes
- transport of GSH and histamine (cytosol to extracellular)
- glutathione:dehydroascorbate oxidoreductase
- cytochrome b reductase (ascorbate)
Catalysed by SLCO1A2, SLCO1B3, CYBRD1extracellular space, cytosol
- transport of histamine (cytosol to extracellular)
- transport of serotonin (cytosol to extracellular)
- serotonin(out) + K(+)(in) + Na(+)(out) + H(+)(in) = serotonin(in) + K(+)(out) + Na(+)(in) + H(+)(out)
Catalysed by SLCO1A2, SLCO1B3, SLC6A4extracellular space, cytosol, inner side of the membrane, outer side of the membraneOne of 3 routes
- L-histidine + H(+) = histamine + CO2
- 4-aminobutanoate + L-histidine + ATP = L-homocarnosine + ADP + phosphate + H(+)
- Transport of Homocarnosine
Catalysed by HDC, CARNS1extracellular space, cytosolOne of 2 routes
- transport of GSH and histamine (cytosol to extracellular)
- cystine to cysteine conversion
- L-Cysteine:tRNA(Cys) ligase (AMP-forming)
Catalysed by SLCO1A2, SLCO1B3, CARS1extracellular space, cytosol
- L-histidine + H(+) = histamine + CO2
- L-histidine(in) + L-phenylalanine(out) = L-histidine(out) + L-phenylalanine(in)
- L-Phenylalanine:tRNA(Ala) ligase (AMP-forming)
Catalysed by HDC, SLC7A8, FARSB, FARSAinner side of the membrane, outer side of the membrane, cytosol
- transport of GSH and histamine (cytosol to extracellular)
- cystine to cysteine conversion
- transport of chloride and cysteine (cytosol to extracellular)
Catalysed by SLCO1A2, SLCO1B3, SLC6A14extracellular space, cytosolOne of 6 routes
- transport of GSH and histamine (cytosol to extracellular)
- cystine to cysteine conversion
- L-cysteine hydrogen-sulfide-lyase (deaminating
Catalysed by SLCO1A2, SLCO1B3, CTHextracellular space, cytosolOne of 2 routes
- L-histidine + H(+) = histamine + CO2
- L-histidine(in) + L-phenylalanine(out) = L-histidine(out) + L-phenylalanine(in)
- L-aspartate(in) + L-phenylalanine(out) = L-aspartate(out) + L-phenylalanine(in)
Catalysed by HDC, SLC7A8, SLC7A13inner side of the membrane, outer side of the membraneOne of 2 routes
- transport of histamine (cytosol to extracellular)
- transport of acetylcholine (cytosol to extracellular)
- Acetylcholine aectylhydrolase
Catalysed by SLCO1A2, SLCO1B3, BCHE, ACHEextracellular space, cytosolOne of 3 routes
- transport of GSH and histamine (cytosol to extracellular)
- alcohol dehydrogenase (formaldehyde)
- S-Formylglutathione hydrolase
Catalysed by SLCO1A2, SLCO1B3, ADH1C, ADH1A and 5 moreextracellular space, cytosol
- transport of histamine (cytosol to extracellular)
- solute carrier organic anion transporter (glycocholate)
- glycocholate(out) + glutarate(in) = glycocholate(in) + glutarate(out)
Catalysed by SLCO1A2, SLCO1B3, SLC22A24extracellular space, cytosol, inner side of the membrane, outer side of the membraneOne of 12 routes
- transport of histamine (cytosol to extracellular)
- transport of estrone 3-sulfate (cytosol to extracellular)
- pentanoate(in) + estrone 3-sulfate(out) = pentanoate(out) + estrone 3-sulfate(in)
Catalysed by SLCO1A2, SLCO1B3, SLCO1B1, SLC22A9extracellular space, cytosol, inner side of the membrane, outer side of the membraneOne of 4 routes
- L-histidine + H(+) = histamine + CO2
- L-histidine(in) + L-ornithine(out) + H(+)(in) = L-histidine(out) + L-ornithine(in) + H(+)(out)
- L-ornithine(out) + L-lysine(in) = L-ornithine(in) + L-lysine(out)
Catalysed by HDC, SLC25A2, SLC25A15inner side of the membrane, outer side of the membraneOne of 3 routes
- L-histidine + H(+) = histamine + CO2
- L-histidine(in) + L-ornithine(out) + H(+)(in) = L-histidine(out) + L-ornithine(in) + H(+)(out)
- D-lysine(in) + L-ornithine(out) = D-lysine(out) + L-ornithine(in)
Catalysed by HDC, SLC25A2inner side of the membrane, outer side of the membraneOne of 2 routes
- L-histidine + H(+) = histamine + CO2
- L-histidine(in) + L-ornithine(out) + H(+)(in) = L-histidine(out) + L-ornithine(in) + H(+)(out)
- L-ornithine carboxy-lyase (putrescine-forming)
Catalysed by HDC, SLC25A2, ODC1inner side of the membrane, outer side of the membrane, cytosolOne of 4 routes