L-methionine
362,296 routes · scope human · up to 3 steps · built 5 October 2026 · Reactions · API
971 compounds within 3 steps: 32 in 1, 337 in 2, 602 in 3
Three steps
- transport of cysteine and methionine (cytosol to extracellular)
- K(+)(in) + L-cysteine(out) + 3 Na(+)(out) + H(+)(out) = K(+)(out) + L-cysteine(in) + 3 Na(+)(in) + H(+)(in)
- Ca(2+)(out) + K(+)(out) + 4 Na(+)(in) = Ca(2+)(in) + K(+)(in) + 4 Na(+)(out)
Catalysed by SLC7A5, SLC1A1, SLC24A1, SLC24A5 and 3 moreextracellular space, cytosol, inner side of the membrane, outer side of the membraneOne of 5 routes
- transport of leucine and methionine (cytosol to extracellular)
- L-Leucine:2-oxoglutarate aminotransferase
- branched chain keto acid dehydrogenase E1 (4-methyl-2-oxopentanoate)
Catalysed by SLC3A2, SLC7A5, BCAT2, BCKDHA and 1 moreextracellular space, cytosol, mitochondrial matrix
- transport of methionine and tyrosine (cytosol to extracellular)
- thyroid peroxidase (iodine)
- iodide + H2O2 = hypoiodite + H2O
Catalysed by SLC7A5, TPO, MPO, LPOextracellular space, cytosol
- N-acetylglutamate synthase (N-acetylmethionine)
- Acetyl-CoA:choline O-acetyltransferase
- phosphocholine + H2O = choline + phosphate
Catalysed by NAGS, CHAT, PHOSPHO1mitochondrial matrix, nucleusOne of 2 routes
Catalysed by NAGS, ACAA1, SCP2, MYO5B and 1 moremitochondrial matrix, peroxisome, cytosolOne of 5 routes
- transport of glycine and methionine (cytosol to extracellular)
- glycine:oxygen oxidoreductase (deaminating)
- glycolate:NADP+ oxidoreductase
Catalysed by SLC7A5, DAO, GRHPRextracellular space, cytosol, peroxisomeOne of 3 routes
- transport of cysteine and methionine (cytosol to extracellular)
- K(+)(in) + L-cysteine(out) + 3 Na(+)(out) + H(+)(out) = K(+)(out) + L-cysteine(in) + 3 Na(+)(in) + H(+)(in)
- D-aspartate(out) + K(+)(in) + 3 Na(+)(out) + H(+)(out) = D-aspartate(in) + K(+)(out) + 3 Na(+)(in) + H(+)(in)
Catalysed by SLC7A5, SLC1A1, SLC1A7, SLC1A3 and 2 moreextracellular space, cytosol, inner side of the membrane, outer side of the membraneOne of 4 routes
- transport of alanine and methionine (cytosol to extracellular)
- (R)-3-Amino-2-methylpropanoate:pyruvate aminotransferase
- transport of acetate and pyruvate (cytosol to extracellular)
Catalysed by SLC7A5, AGXT2, SLC16A4, SLC16A5 and 3 moreextracellular space, cytosol, mitochondrial matrixOne of 11 routes
- N-acetylglutamate synthase (N-acetylmethionine)
- long-chain-fatty-acid-CoA ligase ((6Z,9Z)-octadecadienoic acid)
- (9Z,12Z)-octadecadienoyl-CoA + H2O = (9Z,12Z)-octadecadienoate + CoA + H(+)
Catalysed by NAGS, SLC27A2, ACSL4, ACSL3 and 9 moremitochondrial matrix, cytosol
- N-acetylglutamate synthase (N-acetylmethionine)
- N1,N12-diacetylspermine to N1-acetylspermine conversion
- N1-acetylspermine:oxygen oxidoreductase (3-acetamidopropanal-forming)
Catalysed by NAGS, PAOX, SMOXmitochondrial matrix, cytosolOne of 4 routes
- transport of glycine and methionine (cytosol to extracellular)
- glycine + 2-oxoglutarate = glyoxylate + L-glutamate
- glyoxylate + O2 + H2O = oxalate + H2O2 + H(+)
Catalysed by SLC7A5, AADAT, HAO1extracellular space, cytosolOne of 3 routes
- N-acetylglutamate synthase (N-acetylmethionine)
- Propanoate:CoA ligase (AMP-forming)
- Propanoyl-CoA hydrolase
Catalysed by NAGS, ACSS3, ACSS2, ACSS1 and 1 moremitochondrial matrix, cytosolOne of 7 routes
- N-acetylglutamate synthase (N-acetylmethionine)
- ATP citrate lyase (citrate)
- acetyl-CoA:oxaloacetate C-acetyltransferase (thioester-hydrolysing)
Catalysed by NAGS, ACLY, CSmitochondrial matrix, cytosolOne of 5 routes
- N-acetylglutamate synthase (N-acetylmethionine)
- Butanoate:CoA ligase (AMP-forming)
- Butyryl-CoA hydrolase
Catalysed by NAGS, ACSM4, ACSM1, ACSM2A and 4 moremitochondrial matrix, cytosolOne of 5 routes
- transport of chloride and methionine (cytosol to extracellular)
- transport of chloride and sulfate (cytosol to extracellular)
- maleate(in) + sulfate(out) = maleate(out) + sulfate(in)
Catalysed by SLC6A14, SLC26A6, SLC25A14, SLC25A30extracellular space, cytosol, inner side of the membrane, outer side of the membraneOne of 2 routes
- N-acetylglutamate synthase (N-acetylmethionine)
- long-chain-fatty-acid-CoA ligase (myristic acid)
- Myristoyl-CoA hydrolase
Catalysed by NAGS, SLC27A2, ACSL4, ACSL3 and 10 moremitochondrial matrix, cytosolOne of 2 routes
Catalysed by NAGS, CPT1A, CPT1C, CPT1Bmitochondrial matrix, cytosol, endoplasmic reticulumOne of 6 routes
- N-acetylglutamate synthase (N-acetylmethionine)
- Activation of adipic acid for Formation of Adipoyl Carnitine
- Thioesterification of adipoyl-CoA for Release into Cytosol
Catalysed by NAGS, ACOT8mitochondrial matrix, cytosol, peroxisomeOne of 3 routes
- transport of alanine and methionine (cytosol to extracellular)
- (R)-3-Amino-2-methylpropanoate:pyruvate aminotransferase
- L-Serine:pyruvate aminotransferase
Catalysed by SLC7A5, AGXT2, AGXTextracellular space, cytosol, mitochondrial matrixOne of 2 routes
- L-aspartate(in) + L-methionine(out) = L-aspartate(out) + L-methionine(in)
- carbamoyl-phosphate:L-aspartate carbamoyltransferase
- (S)-dihydroorotate amidohydrolase
Catalysed by SLC7A13, CADinner side of the membrane, outer side of the membrane, cytosolOne of 2 routes
- transport of glycine and methionine (cytosol to extracellular)
- gamma-L-glutamyl-L-cysteine + glycine + ATP = glutathione + ADP + phosphate + H(+)
- a hydroperoxide + 2 glutathione = an alcohol + glutathione disulfide + H2O
Catalysed by SLC7A5, GSS, CP, PRDX6extracellular space, cytosol
- transport of chloride and methionine (cytosol to extracellular)
- transport of chloride and oxalate (cytosol to extracellular)
- Mitochondrial Carrier (Mc) Tcdb:2.A.29.7.2
Catalysed by SLC6A14, SLC26A6, SLC25A1extracellular space, cytosol, mitochondrial matrixOne of 3 routes
- N-acetylglutamate synthase (N-acetylmethionine)
- Production of Glutaryl Carnitine
- glutaryl-CoA + H2O = glutarate + CoA + H(+)
Catalysed by NAGS, CPT1A, CPT1C, CPT1B and 2 moremitochondrial matrix, cytosolOne of 9 routes
- transport of chloride and methionine (cytosol to extracellular)
- transport of chloride and sulfate (cytosol to extracellular)
- (2R,3R)-tartrate(in) + sulfate(out) = (2R,3R)-tartrate(out) + sulfate(in)
Catalysed by SLC6A14, SLC26A6, SLC25A14, SLC25A30extracellular space, cytosol, inner side of the membrane, outer side of the membraneOne of 2 routes
- transport of chloride and methionine (cytosol to extracellular)
- transport of chloride and sulfate (cytosol to extracellular)
- (S,S)-tartrate(in) + sulfate(out) = (S,S)-tartrate(out) + sulfate(in)
Catalysed by SLC6A14, SLC26A6, SLC25A14, SLC25A30extracellular space, cytosol, inner side of the membrane, outer side of the membraneOne of 2 routes
- transport of chloride and methionine (cytosol to extracellular)
- transport of chloride and sulfate (cytosol to extracellular)
- (3R)-citramalate(in) + sulfate(out) = (3R)-citramalate(out) + sulfate(in)
Catalysed by SLC6A14, SLC26A6, SLC25A14, SLC25A30extracellular space, cytosol, inner side of the membrane, outer side of the membraneOne of 2 routes
- transport of chloride and methionine (cytosol to extracellular)
- transport of chloride and sulfate (cytosol to extracellular)
- (3S)-citramalate(in) + sulfate(out) = (3S)-citramalate(out) + sulfate(in)
Catalysed by SLC6A14, SLC26A6, SLC25A14, SLC25A30extracellular space, cytosol, inner side of the membrane, outer side of the membraneOne of 2 routes
- N-acetylglutamate synthase (N-acetylmethionine)
- long-chain-fatty-acid-CoA ligase (behenic acid)
- docosanoyl-CoA + 2 NADPH + 2 H(+) = docosan-1-ol + 2 NADP(+) + CoA
Catalysed by NAGS, SLC27A2, ACSL4, ACSL3 and 6 moremitochondrial matrix, cytosol
- N-acetylglutamate synthase (N-acetylmethionine)
- long-chain-fatty-acid-CoA ligase (cerotic acid)
- Hexacosanoyl-CoA hydrolase
Catalysed by NAGS, SLC27A2, ACSL4, ACSL3 and 7 moremitochondrial matrix, cytosolOne of 2 routes
- N-acetylglutamate synthase (N-acetylmethionine)
- long-chain-fatty-acid-CoA ligase (lignocerate)
- Tetracosenoyl-CoA hydrolase
Catalysed by NAGS, SLC27A2, ACSL4, ACSL3 and 7 moremitochondrial matrix, cytosolOne of 4 routes
- N-acetylglutamate synthase (N-acetylmethionine)
- acyl-CoA:sphingosine N-acyltransferase
- sphingosine N-acyltransferase (sphinganine)
Catalysed by NAGS, ASAH1, ACER2, ACER1 and 7 moremitochondrial matrix, Golgi apparatus, cytosol
- N-acetylglutamate synthase (N-acetylmethionine)
- long-chain-fatty-acid-CoA ligase (stearate)
- octadecanoyl-CoA + 2 NADPH + 2 H(+) = octadecan-1-ol + 2 NADP(+) + CoA
Catalysed by NAGS, SLC27A2, ACSL4, ACSL3 and 6 moremitochondrial matrix, cytosol
- N-acetylglutamate synthase (N-acetylmethionine)
- long-chain-fatty-acid-CoA ligase (eicosanoate)
- Eicosanoyl-CoA hydrolase
Catalysed by NAGS, SLC27A2, ACSL4, ACSL3 and 8 moremitochondrial matrix, cytosolOne of 4 routes
Catalysed by NAGS, CPT1A, CPT1C, CPT1Bmitochondrial matrix, cytosol, endoplasmic reticulumOne of 8 routes
- N-acetylglutamate synthase (N-acetylmethionine)
- long-chain-fatty-acid-CoA ligase (nervonic acid)
- (15Z)-tetracosenoyl-CoA hydrolase
Catalysed by NAGS, SLC27A2, ACSL4, ACSL3 and 7 moremitochondrial matrix, cytosol
Catalysed by NAGS, CPT1A, CPT1C, CPT1Bmitochondrial matrix, cytosol, endoplasmic reticulumOne of 8 routes
- N-acetylglutamate synthase (N-acetylmethionine)
- long-chain-fatty-acid-CoA ligase (cis-gondoic acid)
- (11Z)-eicosenoyl-CoA hydrolase
Catalysed by NAGS, SLC27A2, ACSL4, ACSL3 and 8 moremitochondrial matrix, cytosol
- transport of chloride and methionine (cytosol to extracellular)
- transport of chloride and oxalate (cytosol to extracellular)
- Mitochondrial Carrier (Mc) Tcdb:2.A.29.7.2
Catalysed by SLC6A14, SLC26A6, SLC25A1extracellular space, cytosol, mitochondrial matrixOne of 3 routes
- transport of alanine and methionine (cytosol to extracellular)
- (R)-3-Amino-2-methylpropanoate:pyruvate aminotransferase
- 3-oxopropanoate + L-alanine = beta-alanine + pyruvate
Catalysed by SLC7A5, AGXT2extracellular space, cytosol, mitochondrial matrixOne of 2 routes
- transport of cysteine and methionine (cytosol to extracellular)
- L-Cysteine:2-oxoglutarate aminotransferase
- 3-mercaptopyruvate:sulfide sulfurtransferase
Catalysed by SLC7A5, GOT2, GOT1, MPST and 1 moreextracellular space, cytosolOne of 6 routes
- transport of cysteine and methionine (cytosol to extracellular)
- De novo synthesis of 2Fe2S
- Synthesis of 4Fe4S from 2Fe2S
Catalysed by SLC7A5, NDUFAB1, FDXR, FXN and 10 moreextracellular space, cytosol, mitochondrial matrix
- transport of glycine and methionine (cytosol to extracellular)
- gamma-L-glutamyl-L-cysteine:glycine ligase (ADP-forming)
- transport of GSH and serotonin (cytosol to extracellular)
Catalysed by SLC7A5, GSS, SLCO1A2, SLCO1B3extracellular space, cytosolOne of 6 routes
- N-acetylglutamate synthase (N-acetylmethionine)
- long-chain-fatty-acid-CoA ligase (elaidate)
- (10Z)-heptadecenoic acid formation
Catalysed by NAGS, SLC27A2, ACSL4, ACSL3 and 5 moremitochondrial matrix, cytosolOne of 4 routes
- transport of methionine and threonine (cytosol to extracellular)
- L-threonine ammonia-lyase (2-oxobutanoate-forming)
- glutamic-pyruvic transaminase ((S)-2-aminobutanoate)
Catalysed by SLC7A5, SDS, SDSL, GPTextracellular space, cytosol
- N-acetylglutamate synthase (N-acetylmethionine)
- Propanoyl-CoA:acetyl-CoA C-acyltransferase
- chenodeoxycholoyl-CoA hydrolase
Catalysed by NAGS, ACAA1, SCP2, MYO5B and 3 moremitochondrial matrix, peroxisomeOne of 3 routes
- N-acetylglutamate synthase (N-acetylmethionine)
- propanoyl-CoA C-acyltransferase
- Choloyl-CoA:glycine N-choloyltransferase
Catalysed by NAGS, ACAA1, SCP2, MYO5B and 1 moremitochondrial matrix, peroxisomeOne of 8 routes