AH2
362,296 routes · scope human · up to 3 steps · built 5 October 2026 · Reactions · API
574 compounds within 3 steps: 59 in 1, 98 in 2, 417 in 3
Three steps
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- L-Alanine:glyoxylate aminotransferase
- gamma-L-glutamyl-L-cysteine + glycine + ATP = glutathione + ADP + phosphate + H(+)
Catalysed by SCLY, AGXT, AGXT2, GSSmitochondrial matrixOne of 2 routes
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- transport of alanine and lysine (cytosol to extracellular)
- N6-(L-1,3-Dicarboxypropyl)-L-lysine:NADP+ oxidoreductase (L-lysine-forming)
Catalysed by SCLY, SLC7A6, AASSextracellular space, cytosol, mitochondrial matrix
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- L-Alanine:glyoxylate aminotransferase
- leukotriene C4 hydrolysis
Catalysed by SCLY, AGXT, AGXT2mitochondrial matrix, cytosolOne of 7 routes
- 2-(5Z,8Z,11Z,14Z)-eicosatetraenoyl-sn-glycero-3-phosphocholine + AH2 + O2 = 2-[(11R)-hydroxy-(5Z,8Z,12E,14Z)-eicosatetraenoyl]-sn-glycero-3-phosphocholine + A + H2O
- 2-[(11R)-hydroxy-(5Z,8Z,12E,14Z)-eicosatetraenoyl]-sn-glycero-3-phosphocholine + H2O = (11R)-hydroxy-(5Z,8Z,12E,14Z)-eicosatetraenoate + sn-glycerol 3-phosphocholine + H(+)
- Glycerophosphocholine Phosphodiesterase
- A + NADH + H(+) = AH2 + NAD(+)
- Mo-molybdopterin + L-cysteine + AH2 = thio-Mo-molybdopterin + L-alanine + A + H2O
- L-glutamate:L-cysteine gamma-ligase (ADP-forming)
Catalysed by AIFM1, PYROXD1, MOCOS, GCLC and 1 morecytosolOne of 2 routes
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- transport of alanine and lysine (cytosol to extracellular)
- L-lysine:oxygen 2-oxidoreductase (deaminating)
Catalysed by SCLY, SLC7A6extracellular space, cytosol, peroxisome
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- transport of alanine and glutamine (cytosol to extracellular)
- HCO3-:L-glutamine amido-ligase (ADP-forming, carbamate-phosphorylating)
Catalysed by SCLY, SLC3A2, SLC7A5, SLC7A10 and 1 moreextracellular space, cytosolOne of 4 routes
- 3,3'-diiodo-L-thyronine sulfate + iodide + A + H(+) = 3,3',5-triiodo-L-thyronine sulfate + AH2
- Steryl-Sulfatase
- ATP:sulfate adenylyltransferase
Catalysed by DIO1, STS, PAPSS1, PAPSS2Golgi apparatus, cytosolOne of 4 routes
- N(6)-dimethylallyladenosine(37) in tRNA + (sulfur carrier)-SH + AH2 + 2 S-adenosyl-L-methionine = 2-methylsulfanyl-N(6)-dimethylallyladenosine(37) in tRNA + (sulfur carrier)-H + 5'-deoxyadenosine + L-methionine + A + S-adenosyl-L-homocysteine + 2 H(+)
- S-methyl-L-methionine + L-homocysteine = 2 L-methionine + H(+)
- L-homocysteine + glycine betaine = N,N-dimethylglycine + L-methionine
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- Transport of L-Cystine (L-Alanine antiport) by B0, +At Transporter
- cystine to cysteine conversion
Catalysed by SCLY, SLC7A9, SLC3A1extracellular space, cytosolOne of 16 routes
- 3,3',5-triiodo-L-thyronine + iodide + A + H(+) = L-thyroxine + AH2
- transport of GSH and triiodothyronine (cytosol to extracellular)
- transport of GSH and sulfotaurolithocholate (cytosol to extracellular)
Catalysed by DIO1, DIO2, SLCO1A2, SLCO1B3extracellular space, cytosolOne of 4 routes
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- L-Alanine:glyoxylate aminotransferase
- L-tyrosine + glyoxylate = 3-(4-hydroxyphenyl)pyruvate + glycine
Catalysed by SCLY, AGXT, AGXT2, AADATmitochondrial matrixOne of 4 routes
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- acyl-CoA:sphingosine N-acyltransferase
Catalysed by SCLY, ASAH1, ACER2, ACER1 and 1 moremitochondrial matrix, Golgi apparatusOne of 2 routes
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- transport of alanine and histidine (cytosol to extracellular)
- L-histidine carboxy-lyase (histamine-forming)
Catalysed by SCLY, SLC7A6, HDCextracellular space, cytosolOne of 5 routes
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- L-kynurenine + H2O = anthranilate + L-alanine + H(+)
- Kynurenine-Oxoglutarate Transaminase
Catalysed by SCLY, KYNU, KYAT3, AADATmitochondrial matrixOne of 14 routes
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- transport of alanine and arginine (cytosol to extracellular)
- L-arginine + O2 + H2O = 5-guanidino-2-oxopentanoate + H2O2 + NH4(+)
Catalysed by SCLY, SLC7A6, IL4I1extracellular space, cytosol
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- acetyl-CoA C-acyltransferase (3-oxomyrist-5-enoyl-CoA)
Catalysed by SCLY, HADHA, ACAA2, HADHBmitochondrial matrixOne of 3 routes
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- transport of alanine and tryptophan (cytosol to extracellular)
- L-tryptophan + O2 = N-formyl-L-kynurenine
Catalysed by SCLY, SLC7A5, IDO1, TDO2 and 1 moreextracellular space, cytosolOne of 2 routes
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- 3alpha,7alpha,12alpha-trihydroxy-5beta-cholestanoate:CoA ligase (AMP-forming)
Catalysed by SCLY, SLC27A2, SLC27A5mitochondrial matrix, endoplasmic reticulumOne of 3 routes
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- transport of alanine and glutamine (cytosol to extracellular)
- phosphoribosyl pyrophosphate amidotransferase (glutamine)
Catalysed by SCLY, SLC3A2, SLC7A5, SLC7A10 and 1 moreextracellular space, cytosolOne of 2 routes
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- transport of alanine and glutamine (cytosol to extracellular)
- D-fructose 6-phosphate + L-glutamine = D-glucosamine 6-phosphate + L-glutamate
Catalysed by SCLY, SLC3A2, SLC7A5, SLC7A10 and 2 moreextracellular space, cytosol
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- cholate-CoA ligase (3alpha,12alpha-dihydroxy-5beta-cholanate)
Catalysed by SCLY, SLC27A2, SLC27A5mitochondrial matrix, cytosolOne of 4 routes
- 3,3',5-triiodo-L-thyronine + iodide + A + H(+) = L-thyroxine + AH2
- transport of GSH and triiodothyronine (cytosol to extracellular)
- Sulfide:glutathione,quinone oxidoreductase
Catalysed by DIO1, DIO2, SLCO1A2, SLCO1B3 and 1 moreextracellular space, cytosol, mitochondrial matrix
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- L-Alanine:glyoxylate aminotransferase
- (5Z,8Z,11Z,14Z)-eicosatetraenoyl-CoA + glycine = N-(5Z,8Z,11Z,14Z)-eicosatetraenoyl-glycine + CoA + H(+)
Catalysed by SCLY, AGXT, AGXT2, GLYATL2mitochondrial matrixOne of 2 routes
- A + NADH + H(+) = AH2 + NAD(+)
- Mo-molybdopterin + L-cysteine + AH2 = thio-Mo-molybdopterin + L-alanine + A + H2O
- (R)-4'-phosphopantothenate:L-cysteine ligase
Catalysed by AIFM1, PYROXD1, MOCOS, PPCScytosolOne of 4 routes
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- L-kynurenine + H2O = anthranilate + L-alanine + H(+)
- an L-alpha-amino acid(in) + L-kynurenine(out) = an L-alpha-amino acid(out) + L-kynurenine(in)
Catalysed by SCLY, KYNU, SLC7A11inner side of the membrane, outer side of the membraneOne of 2 routes
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- transport of alanine and chloride (cytosol to extracellular)
- transport of 4-aminobutyrate and chloride (cytosol to extracellular)
Catalysed by SCLY, SLC6A14, SLC6A12extracellular space, cytosolOne of 4 routes
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- transport of alanine and tyrosine (cytosol to extracellular)
- thyroid peroxidase (iodine)
Catalysed by SCLY, SLC7A5, TPOextracellular space, cytosolOne of 4 routes
- 3,3',5-triiodo-L-thyronine + iodide + A + H(+) = L-thyroxine + AH2
- transport of GSH and triiodothyronine (cytosol to extracellular)
- transport of dopamine and GSH (cytosol to extracellular)
Catalysed by DIO1, DIO2, SLCO1A2, SLCO1B3extracellular space, cytosolOne of 4 routes
- (5Z,8Z,11Z,14Z)-eicosatetraenoate + AH2 + 2 O2 = prostaglandin H2 + A + H2O
- prostaglandin H2(out) + 2 (S)-lactate(in) = prostaglandin H2(in) + 2 (S)-lactate(out)
- (2S)-2-phospholactate + H2O = (S)-lactate + phosphate
Catalysed by PTGS1, PTGS2, SLCO2A1, PGPinner side of the membrane, outer side of the membraneOne of 2 routes
- 3,3',5-triiodo-L-thyronine + iodide + A + H(+) = L-thyroxine + AH2
- transport of GSH and triiodothyronine (cytosol to extracellular)
- transport of GSH and sulfoglycolithocholate (cytosol to extracellular)
Catalysed by DIO1, DIO2, SLCO1A2, SLCO1B3extracellular space, cytosolOne of 4 routes
- 3,3',5-triiodo-L-thyronine + iodide + A + H(+) = L-thyroxine + AH2
- transport of S-glutathionyl-2-4-dinitrobenzene (cytosol to extracellular)
- transport of estrone 3-sulfate (cytosol to extracellular)
Catalysed by DIO1, DIO2, SLCO1A2, SLCO1B3 and 1 moreextracellular space, cytosolOne of 3 routes
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- L-Alanine:glyoxylate aminotransferase
- Hippurate (Benzoylglycinate) Formation
Catalysed by SCLY, AGXT, AGXT2mitochondrial matrixOne of 2 routes
- A + NADH + H(+) = AH2 + NAD(+)
- Mo-molybdopterin + L-cysteine + AH2 = thio-Mo-molybdopterin + L-alanine + A + H2O
- L-Cysteine:oxygen oxidoreductase
Catalysed by AIFM1, PYROXD1, MOCOS, CDO1cytosolOne of 6 routes
- L-selenocysteine + AH2 = hydrogenselenide + L-alanine + A + H(+)
- amino-acid N-acetyltransferase (N-acetyl-L-alanine)
- medium-chain acyl-CoA ligase (decanoic acid)
Catalysed by SCLY, ACSM4, ACSM1, ACSM2A and 3 moremitochondrial matrix, cytosolOne of 7 routes