(6S)-5-methyl-5,6,7,8-tetrahydrofolate

Three steps

• 3,3'-diiodo-L-thyronine sulfateReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-SH + AH2 + 2 S-adenosyl-L-methionine = 2-methylsulfanyl-N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-H + 5'-deoxyadenosine + L-methionine + A + S-adenosyl-L-homocysteine + 2 H(+)
  3. 3,3'-diiodo-L-thyronine sulfate + iodide + A + H(+) = 3,3',5-triiodo-L-thyronine sulfate + AH2

  Catalysed by MTR, CDKAL1, DIO1One of 2 routes

• (7Z,10Z,13Z)-hexadecatrienoyl-CoAReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N-acetylglutamate synthase (N-acetylmethionine)
  3. Fatty Acid Beta Oxidation (C18:3->C16:3), Mitochondrial

  Catalysed by MTR, NAGS, HADHA, ACADVL and 1 moremitochondrial matrix

• Ala-tRNA(Ala)Reach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. transport of alanine and methionine (cytosol to extracellular)
  3. L-Alanine:tRNA(Ala) ligase (AMP-forming)

  Catalysed by MTR, SLC7A5, AARS1extracellular space, cytosol

• glycine betaineReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. transport of chloride and methionine (cytosol to extracellular)
  3. transport of betaine and chloride (cytosol to extracellular)

  Catalysed by MTR, SLC6A14, SLC6A12extracellular space, cytosolOne of 3 routes

• trans-urocanateReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. transport of histidine and methionine (cytosol to extracellular)
  3. L-histidine ammonia-lyase (urocanate-forming)

  Catalysed by MTR, SLC7A6, HALextracellular space, cytosol

• 5-hydroxy-L-tryptophanReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. transport of methionine and tryptophan (cytosol to extracellular)
  3. (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin + L-tryptophan + O2 = 5-hydroxy-L-tryptophan + (4aS,6R)-4a-hydroxy-L-erythro-5,6,7,8-tetrahydrobiopterin

  Catalysed by MTR, SLC7A5, TPH1, TPH2extracellular space, cytosol

• 4-methyl-2-oxopentanoateReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. transport of leucine and methionine (cytosol to extracellular)
  3. L-Leucine:2-oxoglutarate aminotransferase

  Catalysed by MTR, SLC3A2, SLC7A5, BCAT2extracellular space, cytosol, mitochondrial matrixOne of 4 routes

• CHEBI:17927Reach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N-acetylglutamate synthase (N-acetylmethionine)
  3. N1,N8-diacetylspermidine to N1-acetylspermidine conversion

  Catalysed by MTR, NAGSmitochondrial matrix, cytosolOne of 2 routes

• 3-phenylpyruvateReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. transport of methionine and phenylalanine (cytosol to extracellular)
  3. Phenylalanine Transaminase, Mitochondrial

  Catalysed by MTR, SLC7A5, GOT2, TATextracellular space, cytosol, mitochondrial matrixOne of 5 routes

• fumaric acidReach from here →
  1. 5-amino-1-(5-phospho-beta-D-ribosyl)imidazole-4-carboxamide(in) + (6S)-5-methyl-5,6,7,8-tetrahydrofolate(out) = 5-amino-1-(5-phospho-beta-D-ribosyl)imidazole-4-carboxamide(out) + (6S)-5-methyl-5,6,7,8-tetrahydrofolate(in)
  2. 1-(5'-Phosphoribosyl)-5-amino-4-(N-succinocarboxamide)-imidazole AMP-lyase
  3. 1-(5'-Phosphoribosyl)-5-amino-4-(N-succinocarboxamide)-imidazole AMP-lyase

  Catalysed by SLC19A1, ADSLinner side of the membrane, outer side of the membrane, cytosolOne of 2 routes

• CHEBI:18095Reach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. transport of alanine and methionine (cytosol to extracellular)
  3. Transport of Hydroxy-Proline

  Catalysed by MTR, SLC7A5, SLC1A4extracellular space, cytosolOne of 5 routes

• N-carbamoyl-beta-alanineReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. transport of chloride and methionine (cytosol to extracellular)
  3. Transport of 3-Ureidopropionate

  Catalysed by MTR, SLC6A14extracellular space, cytosolOne of 2 routes

• N(1)-(5-phospho-D-ribosyl)glycinamideReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. (6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + glycine + H2O = (6S)-5,6,7,8-tetrahydrofolate + L-serine
  3. 5-Phospho-D-ribosylamine:glycine ligase (ADP-forming)

  Catalysed by MTR, SHMT1, SHMT2, GARTcytosol

• 2-phenylethylamineReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. transport of methionine and phenylalanine (cytosol to extracellular)
  3. L-phenylalanine carboxy-lyase (phenylethylamine-forming)

  Catalysed by MTR, SLC7A5, DDCextracellular space, cytosol

• 2-formamido-N(1)-(5-phospho-D-ribosyl)acetamidineReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. transport of glutamine and methionine (cytosol to extracellular)
  3. 5'-Phosphoribosylformylglycinamide:L-glutamine amido-ligase (ADP-forming)

  Catalysed by MTR, SLC7A5, PFASextracellular space, cytosol

• ophthalmateReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. (6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + glycine + H2O = (6S)-5,6,7,8-tetrahydrofolate + L-serine
  3. gamma-L-glutamyl-(2S)-2-aminobutanoate + glycine + ATP = ophthalmate + ADP + phosphate + H(+)

  Catalysed by MTR, SHMT1, SHMT2, GSS

• 2-aminoisobutanoateReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. transport of alanine and methionine (cytosol to extracellular)
  3. 2-aminoisobutanoate(out) + L-alanine(in) = 2-aminoisobutanoate(in) + L-alanine(out)

  Catalysed by MTR, SLC7A5, SLC7A10extracellular space, cytosol, inner side of the membrane, outer side of the membraneOne of 2 routes

• 3',5'-diiodo-L-thyronineReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-SH + AH2 + 2 S-adenosyl-L-methionine = 2-methylsulfanyl-N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-H + 5'-deoxyadenosine + L-methionine + A + S-adenosyl-L-homocysteine + 2 H(+)
  3. 3',5'-diiodo-L-thyronine + iodide + A + H(+) = 3,3',5'-triiodo-L-thyronine + AH2

  Catalysed by MTR, CDKAL1, DIO3

• N(omega),N('omega)-dimethyl-L-arginineReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. (6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + glycine + H2O = (6S)-5,6,7,8-tetrahydrofolate + L-serine
  3. N(omega),N('omega)-dimethyl-L-arginine + glyoxylate = 5-(3,3'-dimethylguanidino)-2-oxopentanoate + glycine

  Catalysed by MTR, SHMT1, SHMT2, AGXT2One of 2 routes

• (6R)-5,10-methylenetetrahydrofolic acidReach from here →
  1. 5-amino-1-(5-phospho-beta-D-ribosyl)imidazole-4-carboxamide(in) + (6S)-5-methyl-5,6,7,8-tetrahydrofolate(out) = 5-amino-1-(5-phospho-beta-D-ribosyl)imidazole-4-carboxamide(out) + (6S)-5-methyl-5,6,7,8-tetrahydrofolate(in)
  2. phosphoribosylaminoimidazolecarboxamide formyltransferase (10-formyl-THF)
  3. 5,10-Methylenetetrahydrofolate:glycine hydroxymethyltransferase

  Catalysed by SLC19A1, ATIC, SHMT1inner side of the membrane, outer side of the membrane, cytosolOne of 5 routes

• 5'-pGpA(2'-5')Reach from here →
  1. 5-amino-1-(5-phospho-beta-D-ribosyl)imidazole-4-carboxamide(in) + (6S)-5-methyl-5,6,7,8-tetrahydrofolate(out) = 5-amino-1-(5-phospho-beta-D-ribosyl)imidazole-4-carboxamide(out) + (6S)-5-methyl-5,6,7,8-tetrahydrofolate(in)
  2. 2',3'-cGAMP(out) + 5-amino-1-(5-phospho-beta-D-ribosyl)imidazole-4-carboxamide(in) = 2',3'-cGAMP(in) + 5-amino-1-(5-phospho-beta-D-ribosyl)imidazole-4-carboxamide(out)
  3. 2',3'-cGAMP + H2O = 5'-pGpA(2'-5') + H(+)

  Catalysed by SLC19A1, SMPDL3Ainner side of the membrane, outer side of the membrane

• S-disulfanyl-L-cysteineReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. transport of cysteine and methionine (cytosol to extracellular)
  3. S-sulfanyl-L-cysteine + L-cysteine = S-disulfanyl-L-cysteine + L-alanine

  Catalysed by MTR, SLC7A5, CARS2extracellular space, cytosol

• (5Z)-dodecenoyl-CoAReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N-acetylglutamate synthase (N-acetylmethionine)
  3. acetyl-CoA C-acyltransferase (3-oxomyrist-7-enoyl-CoA)

  Catalysed by MTR, NAGS, HADHA, ACAA2 and 1 moremitochondrial matrixOne of 2 routes

• 3-iodothyronamineReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-SH + AH2 + 2 S-adenosyl-L-methionine = 2-methylsulfanyl-N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-H + 5'-deoxyadenosine + L-methionine + A + S-adenosyl-L-homocysteine + 2 H(+)
  3. 3-iodothyronamine + iodide + A + H(+) = 3,5-diiodothyronamine + AH2

  Catalysed by MTR, CDKAL1, DIO1, DIO3One of 2 routes

• (11Z)-docosenoyl-CoA(4-)Reach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N-acetylglutamate synthase (N-acetylmethionine)
  3. long-chain-fatty-acid-CoA ligase (cis-cetoleic acid)

  Catalysed by MTR, NAGS, SLC27A2, ACSL4 and 6 moremitochondrial matrix, cytosolOne of 5 routes

• 3-iodo-L-thyronineReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-SH + AH2 + 2 S-adenosyl-L-methionine = 2-methylsulfanyl-N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-H + 5'-deoxyadenosine + L-methionine + A + S-adenosyl-L-homocysteine + 2 H(+)
  3. 3-iodo-L-thyronine + iodide + A + H(+) = 3,5-diiodo-L-thyronine + AH2

  Catalysed by MTR, CDKAL1, DIO1, DIO3One of 2 routes

• (7Z)-tetradecenoyl-CoAReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N-acetylglutamate synthase (N-acetylmethionine)
  3. long-chain-fatty-acid-CoA ligase ((7Z)-tetradecenoic acid)

  Catalysed by MTR, NAGS, SLC27A2, ACSL4 and 6 moremitochondrial matrix, cytosolOne of 8 routes

• 3'-iodo-L-thyronineReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-SH + AH2 + 2 S-adenosyl-L-methionine = 2-methylsulfanyl-N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-H + 5'-deoxyadenosine + L-methionine + A + S-adenosyl-L-homocysteine + 2 H(+)
  3. 3'-iodo-L-thyronine + iodide + A + H(+) = 3',5'-diiodo-L-thyronine + AH2

  Catalysed by MTR, CDKAL1, DIO1, DIO2One of 2 routes

• L-thyronineReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-SH + AH2 + 2 S-adenosyl-L-methionine = 2-methylsulfanyl-N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-H + 5'-deoxyadenosine + L-methionine + A + S-adenosyl-L-homocysteine + 2 H(+)
  3. L-thyronine + iodide + A + H(+) = 3-iodo-L-thyronine + AH2

  Catalysed by MTR, CDKAL1, DIO3

• thyronamineReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-SH + AH2 + 2 S-adenosyl-L-methionine = 2-methylsulfanyl-N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-H + 5'-deoxyadenosine + L-methionine + A + S-adenosyl-L-homocysteine + 2 H(+)
  3. thyronamine + iodide + A + H(+) = 3-iodothyronamine + AH2

  Catalysed by MTR, CDKAL1, DIO3

• 3'-iodothyronamineReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-SH + AH2 + 2 S-adenosyl-L-methionine = 2-methylsulfanyl-N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-H + 5'-deoxyadenosine + L-methionine + A + S-adenosyl-L-homocysteine + 2 H(+)
  3. 3'-iodothyronamine + iodide + A + H(+) = 3',5'-diiodothyronamine + AH2

  Catalysed by MTR, CDKAL1, DIO1, DIO2One of 2 routes

• 3,3'-diiodothyronamineReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-SH + AH2 + 2 S-adenosyl-L-methionine = 2-methylsulfanyl-N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-H + 5'-deoxyadenosine + L-methionine + A + S-adenosyl-L-homocysteine + 2 H(+)
  3. 3,3'-diiodothyronamine + iodide + A + H(+) = 3,3',5'-triiodothyronamine + AH2

  Catalysed by MTR, CDKAL1, DIO1, DIO2One of 2 routes

• 3',5'-diiodothyronamineReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-SH + AH2 + 2 S-adenosyl-L-methionine = 2-methylsulfanyl-N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-H + 5'-deoxyadenosine + L-methionine + A + S-adenosyl-L-homocysteine + 2 H(+)
  3. 3',5'-diiodothyronamine + iodide + A + H(+) = 3,3',5'-triiodothyronamine + AH2

  Catalysed by MTR, CDKAL1, DIO3

• 3,3',5'-triiodothyronamineReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-SH + AH2 + 2 S-adenosyl-L-methionine = 2-methylsulfanyl-N(6)-L-threonylcarbamoyladenosine(37) in tRNA + (sulfur carrier)-H + 5'-deoxyadenosine + L-methionine + A + S-adenosyl-L-homocysteine + 2 H(+)
  3. 3,3',5'-triiodothyronamine + iodide + A + H(+) = 3,3',5,5'-tetraiodothyronamine + AH2

  Catalysed by MTR, CDKAL1, DIO3

• L-homocysteine thiolactoneReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. S-methyl-L-methionine + L-homocysteine = 2 L-methionine + H(+)
  3. L-homocysteine + ATP = L-homocysteine thiolactone + AMP + diphosphate

  Catalysed by MTR, BHMT2, MARS1

• L-homocysteinyl-AMPReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. S-methyl-L-methionine + L-homocysteine = 2 L-methionine + H(+)
  3. L-homocysteine + ATP + H(+) = L-homocysteinyl-AMP + diphosphate

  Catalysed by MTR, BHMT2, MARS1

• (4Z,7Z,10Z,13Z)-hexadecatetraenoyl-CoAReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N-acetylglutamate synthase (N-acetylmethionine)
  3. Fatty Acid Beta Oxidation (C18:4->C16:4), Mitochondrial

  Catalysed by MTR, NAGS, HADHA, ACADVL and 1 moremitochondrial matrixOne of 3 routes

• (7Z,10Z)-hexadecadienoyl-CoAReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N-acetylglutamate synthase (N-acetylmethionine)
  3. Fatty Acid Beta Oxidation Trans (C18:2->C16:2), Mitochondrial

  Catalysed by MTR, NAGS, HADHA, ACADVL and 1 moremitochondrial matrix

• (4Z,7Z)-decadienoyl-CoAReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N-acetylglutamate synthase (N-acetylmethionine)
  3. Fatty Acid Beta Oxidation (C12:3->C10:2), Mitochondrial

  Catalysed by MTR, NAGS, ECHS1, ACAA2 and 1 moremitochondrial matrixOne of 2 routes

• (5Z)-octenoyl-CoAReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N-acetylglutamate synthase (N-acetylmethionine)
  3. Fatty Acid Beta Oxidation (C10:2->C8:1), Mitochondrial

  Catalysed by MTR, NAGS, ECHS1, ACAA2 and 1 moremitochondrial matrixOne of 2 routes

• CHEBI:240943Reach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. (6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + glycine + H2O = (6S)-5,6,7,8-tetrahydrofolate + L-serine
  3. glycine N-acyltransferase (2-methylbutyryl-CoA)

  Catalysed by MTR, SHMT1, SHMT2, GLYAT and 2 moremitochondrial matrixOne of 3 routes

• hypochlorous acidReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. transport of chloride and methionine (cytosol to extracellular)
  3. Peroxidase

  Catalysed by MTR, SLC6A14, LPOextracellular space, cytosolOne of 4 routes

• potassium atomReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. transport of chloride and methionine (cytosol to extracellular)
  3. transport of chloride (cytosol to extracellular)

  Catalysed by MTR, SLC6A14, SLC12A2, SLC12A1extracellular space, cytosolOne of 3 routes

• folic acidReach from here →
  1. 5-amino-1-(5-phospho-beta-D-ribosyl)imidazole-4-carboxamide(in) + (6S)-5-methyl-5,6,7,8-tetrahydrofolate(out) = 5-amino-1-(5-phospho-beta-D-ribosyl)imidazole-4-carboxamide(out) + (6S)-5-methyl-5,6,7,8-tetrahydrofolate(in)
  2. 10-formyldihydrofolate + 5-amino-1-(5-phospho-beta-D-ribosyl)imidazole-4-carboxamide = 5-formamido-1-(5-phospho-D-ribosyl)imidazole-4-carboxamide + 7,8-dihydrofolate
  3. dihydrofolate:NAD+ oxidoreductase

  Catalysed by SLC19A1, ATIC, DHFR, DHFR2inner side of the membrane, outer side of the membrane, cytosolOne of 2 routes

• phenylacetylglycineReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. (6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + glycine + H2O = (6S)-5,6,7,8-tetrahydrofolate + L-serine
  3. phenylacetyl-CoA:glycine N-phenylacetyltransferase

  Catalysed by MTR, SHMT1, SHMT2, GLYATcytosolOne of 3 routes

• CHEBI:27540Reach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N-acetylglutamate synthase (N-acetylmethionine)
  3. medium-chain acyl-CoA ligase (hexanoic acid)

  Catalysed by MTR, NAGS, ACSM4, ACSM1 and 4 moremitochondrial matrix, cytosolOne of 6 routes

• elaidic acidReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N-acetylglutamate synthase (N-acetylmethionine)
  3. long-chain-fatty-acid-CoA ligase (elaidate)

  Catalysed by MTR, NAGS, SLC27A2, ACSL4 and 6 moremitochondrial matrix, cytosolOne of 5 routes

• 5-hydroxytryptophanReach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. transport of methionine and tryptophan (cytosol to extracellular)
  3. L-Tryptophan, Tetrahydrobiopterin:Oxygen Oxidoreductase (5-Hydroxylating)

  Catalysed by MTR, SLC7A5, TPH1, TPH2extracellular space, cytosolOne of 2 routes

• CHEBI:28666Reach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. (6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + glycine + H2O = (6S)-5,6,7,8-tetrahydrofolate + L-serine
  3. LTD4 hydrolysis

  Catalysed by MTR, SHMT1, SHMT2cytosol

• CHEBI:28701Reach from here →
  1. (6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine = (6S)-5,6,7,8-tetrahydrofolate + L-methionine
  2. N-acetylglutamate synthase (N-acetylmethionine)
  3. Propanoyl-CoA:acetyl-CoA C-acyltransferase

  Catalysed by MTR, NAGS, ACAA1, SCP2 and 1 moremitochondrial matrix, peroxisomeOne of 7 routes