L-cysteine

Three steps

• 1-heptadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-phosphoethanolamineReach from here →
  1. cystine to cysteine conversion
  2. transport of arachidonate and GSH (cytosol to extracellular)
  3. 1-heptadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-phosphoethanolamine + H2O = 1-heptadecanoyl-sn-glycero-3-phosphoethanolamine + (5Z,8Z,11Z,14Z)-eicosatetraenoate + H(+)

  Catalysed by ABHD16Acytosol, extracellular space

• O-tetradecanoyl-(R)-carnitineReach from here →
  1. N-acetylglutamate synthase (N-acetyl-L-cysteine)
  2. long-chain-fatty-acid-CoA ligase (myristic acid)
  3. tetradecanoyl-CoA + (R)-carnitine = O-tetradecanoyl-(R)-carnitine + CoA

  Catalysed by NAGS, SLC27A2, ACSL4, ACSL3 and 6 moremitochondrial matrix, cytosol

• O-octadecanoyl-(R)-carnitineReach from here →
  1. N-acetylglutamate synthase (N-acetyl-L-cysteine)
  2. long-chain-fatty-acid-CoA ligase (stearate)
  3. (R)-carnitine + octadecanoyl-CoA = O-octadecanoyl-(R)-carnitine + CoA

  Catalysed by NAGS, SLC27A2, ACSL4, ACSL3 and 5 moremitochondrial matrix, cytosol

• O-eicosanoyl-(R)-carnitineReach from here →
  1. N-acetylglutamate synthase (N-acetyl-L-cysteine)
  2. long-chain-fatty-acid-CoA ligase (eicosanoate)
  3. eicosanoyl-CoA + (R)-carnitine = O-eicosanoyl-(R)-carnitine + CoA

  Catalysed by NAGS, SLC27A2, ACSL4, ACSL3 and 6 moremitochondrial matrix, cytosol

• O-4,8-dimethylnonanoyl-(R)-carnitineReach from here →
  1. N-acetylglutamate synthase (N-acetyl-L-cysteine)
  2. Carnitine O-Palmitoyltransferase
  3. Carnitine Dimethyl Nonanoyl Transferase, Revsible, Peroxisomal

  Catalysed by NAGS, CPT1A, CPT1C, CPT1B and 2 moremitochondrial matrix, cytosol, peroxisomeOne of 7 routes

• 1-octadecanoyl-2-(9Z,12Z)-octadecadienoyl-sn-glycero-3-phosphocholineReach from here →
  1. N-acetylglutamate synthase (N-acetyl-L-cysteine)
  2. long-chain-fatty-acid-CoA ligase (stearate)
  3. 2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphocholine + octadecanoyl-CoA = 1-octadecanoyl-2-(9Z,12Z)-octadecadienoyl-sn-glycero-3-phosphocholine + CoA

  Catalysed by NAGS, SLC27A2, ACSL4, ACSL3 and 5 moremitochondrial matrix, cytosol

• 1-octadecanoyl-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphocholineReach from here →
  1. N-acetylglutamate synthase (N-acetyl-L-cysteine)
  2. long-chain-fatty-acid-CoA ligase (stearate)
  3. 2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphocholine + octadecanoyl-CoA = 1-octadecanoyl-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphocholine + CoA

  Catalysed by NAGS, SLC27A2, ACSL4, ACSL3 and 5 moremitochondrial matrix, cytosol

• (5Z,8Z,11Z,14Z,17Z-eicosapentaenoyl)-cholesterolReach from here →
  1. N-acetylglutamate synthase (N-acetyl-L-cysteine)
  2. long-chain-fatty-acid-CoA ligase (EPA)
  3. Acyl-CoA:cholesterol O-acyltransferase

  Catalysed by NAGS, SLC27A2, ACSL4, ACSL3 and 7 moremitochondrial matrix, cytosol, endoplasmic reticulumOne of 2 routes

• 2-glyceryl-prostaglandin H2Reach from here →
  1. transport of alanine and cysteine (cytosol to extracellular)
  2. Mo-molybdopterin + L-cysteine + AH2 = thio-Mo-molybdopterin + L-alanine + A + H2O
  3. 2-glyceryl-prostaglandin G2 + AH2 = 2-glyceryl-prostaglandin H2 + A + H2O

  Catalysed by SLC7A5, MOCOS, PTGS2extracellular space, cytosol

• 11beta-prostaglandin F2Reach from here →
  1. cystine to cysteine conversion
  2. transport of GSH and prostaglandin D2 (cytosol to extracellular)
  3. prostaglandin D2 + NADPH + H(+) = 11beta-prostaglandin F2 + NADP(+)

  Catalysed by SLCO2A1, AKR1C3, AKR1C2cytosol, extracellular space

• a methyl thioetherReach from here →
  1. L-cysteine hydrogen-sulfide-lyase (deaminating
  2. L-cysteinyl-[sulfatase] + 2 a thiol + O2 = an organic disulfide + 3-oxo-L-alanyl-[sulfatase] + hydrogen sulfide + H2O + H(+)
  3. a thiol + S-adenosyl-L-methionine = a methyl thioether + S-adenosyl-L-homocysteine + H(+)

  Catalysed by CTH, SUMF1, TMT1B, TMT1Acytosol

• (2E,5Z)-tetradecadienoyl-CoAReach from here →
  1. N-acetylglutamate synthase (N-acetyl-L-cysteine)
  2. long-chain-fatty-acid-CoA ligase (physeteric acid)
  3. medium-chain acyl-CoA dehydrogenase (5-tetradecenoyl-CoA)

  Catalysed by NAGS, SLC27A2, ACSL4, ACSL3 and 9 moremitochondrial matrix, cytosolOne of 4 routes

• (2E,7Z)-hexadecadienoyl-CoAReach from here →
  1. N-acetylglutamate synthase (N-acetyl-L-cysteine)
  2. long-chain-fatty-acid-CoA ligase (7-palmitoleic acid)
  3. medium-chain acyl-CoA dehydrogenase (7-hexadecenoyl-CoA)

  Catalysed by NAGS, SLC27A2, ACSL4, ACSL3 and 9 moremitochondrial matrix, cytosolOne of 4 routes

• 3-methylmalateReach from here →
  1. transport of cysteine and glycine (cytosol to extracellular)
  2. glycine + 2-oxoglutarate = glyoxylate + L-glutamate
  3. propanoyl-CoA + glyoxylate + H2O = 3-methylmalate + CoA + H(+)

  Catalysed by SLC3A2, SLC7A5, SLC7A8, AADAT and 1 moreextracellular space, cytosol

• cholesteryl (11Z)-octadecenoateReach from here →
  1. N-acetylglutamate synthase (N-acetyl-L-cysteine)
  2. Transport of 11-Octadecenoyl Carnitine into the Mitochondrial Matrix
  3. (11Z)-octadecenoyl-CoA + cholesterol = cholesteryl (11Z)-octadecenoate + CoA

  Catalysed by NAGS, CPT1A, CPT1C, CPT1B and 1 moremitochondrial matrix, cytosol

• (5S)-hydroxy-(6E,8Z,11Z,14Z)-eicosatetraenoateReach from here →
  1. L-cysteine hydrogen-sulfide-lyase (deaminating
  2. thiosulfate + 2 glutathione = glutathione disulfide + hydrogen sulfide + sulfite + 2 H(+)
  3. (5S)-hydroperoxy-(6E,8Z,11Z,14Z)-eicosatetraenoate + 2 glutathione = (5S)-hydroxy-(6E,8Z,11Z,14Z)-eicosatetraenoate + glutathione disulfide + H2O

  Catalysed by CTH, TSTD1, PTGES, MGST3 and 4 morecytosol

• Se-methylselenocysteineReach from here →
  1. transport of alanine and cysteine (cytosol to extracellular)
  2. L-selenocysteine selenide-lyase (L-alanine-forming)
  3. S-Adenosyl-L-methionine:thiol S-methyltransferase

  Catalysed by SLC7A5, SCLYextracellular space, cytosol

• (12S)-hydroxy-(5Z,8Z,10E,14Z)-eicosatetraenoateReach from here →
  1. L-cysteine hydrogen-sulfide-lyase (deaminating
  2. thiosulfate + 2 glutathione = glutathione disulfide + hydrogen sulfide + sulfite + 2 H(+)
  3. (12S)-hydroperoxy-(5Z,8Z,10E,14Z)-eicosatetraenoate + 2 glutathione = (12S)-hydroxy-(5Z,8Z,10E,14Z)-eicosatetraenoate + glutathione disulfide + H2O

  Catalysed by CTH, TSTD1, GPX1, GPX4cytosol

• (12S)-hydroxy-(5Z,8E,10E)-heptadecatrienoateReach from here →
  1. cystine to cysteine conversion
  2. transport of GSH and prostaglandin H2 (cytosol to extracellular)
  3. prostaglandin H2 = (12S)-hydroxy-(5Z,8E,10E)-heptadecatrienoate + malonaldehyde

  Catalysed by SLCO2A1, TBXAS1, CYP2S1, PTGES2cytosol, extracellular space

• a 3-oxoacyl-CoAReach from here →
  1. N-acetylglutamate synthase (N-acetyl-L-cysteine)
  2. acyl-CoA:sphingosine N-acyltransferase
  3. an acyl-CoA + acetyl-CoA = a 3-oxoacyl-CoA + CoA

  Catalysed by NAGS, ASAH1, ACER2, ACER1 and 5 moremitochondrial matrix, Golgi apparatus

• an S-substituted glutathioneReach from here →
  1. L-cysteine hydrogen-sulfide-lyase (deaminating
  2. thiosulfate + 2 glutathione = glutathione disulfide + hydrogen sulfide + sulfite + 2 H(+)
  3. RX + glutathione = an S-substituted glutathione + a halide anion + H(+)

  Catalysed by CTH, TSTD1, GSTT4, GSTA4 and 21 morecytosolOne of 2 routes

• (18R)-hydroxy-(5Z,8Z,11Z,14Z)-eicosatetraenoateReach from here →
  1. cystine to cysteine conversion
  2. transport of arachidonate and GSH (cytosol to extracellular)
  3. (5Z,8Z,11Z,14Z)-eicosatetraenoate + reduced [NADPH--hemoprotein reductase] + O2 = (18R)-hydroxy-(5Z,8Z,11Z,14Z)-eicosatetraenoate + oxidized [NADPH--hemoprotein reductase] + H2O + H(+)

  Catalysed by CYP4F8cytosol, extracellular space

• prostaglandin H1Reach from here →
  1. transport of alanine and cysteine (cytosol to extracellular)
  2. Mo-molybdopterin + L-cysteine + AH2 = thio-Mo-molybdopterin + L-alanine + A + H2O
  3. prostaglandin G1 + AH2 = prostaglandin H1 + A + H2O

  Catalysed by SLC7A5, MOCOS, PTGS2extracellular space, cytosolOne of 3 routes

• 19-hydroxyprostaglandin H2Reach from here →
  1. cystine to cysteine conversion
  2. transport of GSH and prostaglandin H2 (cytosol to extracellular)
  3. prostaglandin H2 + reduced [NADPH--hemoprotein reductase] + O2 = 19-hydroxyprostaglandin H2 + oxidized [NADPH--hemoprotein reductase] + H2O + H(+)

  Catalysed by SLCO2A1, CYP4F8cytosol, extracellular space

• (5S,11R)-dihydroxy-(6E,8Z,12E,14Z)-eicosatetraenoateReach from here →
  1. transport of alanine and cysteine (cytosol to extracellular)
  2. Mo-molybdopterin + L-cysteine + AH2 = thio-Mo-molybdopterin + L-alanine + A + H2O
  3. (5S)-hydroxy-(6E,8Z,11Z,14Z)-eicosatetraenoate + AH2 + O2 = (5S,11R)-dihydroxy-(6E,8Z,12E,14Z)-eicosatetraenoate + A + H2O

  Catalysed by SLC7A5, MOCOS, PTGS2extracellular space, cytosol

• (5S,15R)-dihydroxy-(6E,8Z,11Z,13E)-eicosatetraenoateReach from here →
  1. transport of alanine and cysteine (cytosol to extracellular)
  2. Mo-molybdopterin + L-cysteine + AH2 = thio-Mo-molybdopterin + L-alanine + A + H2O
  3. (5S)-hydroxy-(6E,8Z,11Z,14Z)-eicosatetraenoate + AH2 + O2 = (5S,15R)-dihydroxy-(6E,8Z,11Z,13E)-eicosatetraenoate + A + H2O

  Catalysed by SLC7A5, MOCOS, PTGS2extracellular space, cytosol

• (5S,15S)-dihydroxy-(6E,8Z,11Z,13E)-eicosatetraenoateReach from here →
  1. transport of alanine and cysteine (cytosol to extracellular)
  2. Mo-molybdopterin + L-cysteine + AH2 = thio-Mo-molybdopterin + L-alanine + A + H2O
  3. (5S)-hydroxy-(6E,8Z,11Z,14Z)-eicosatetraenoate + AH2 + O2 = (5S,15S)-dihydroxy-(6E,8Z,11Z,13E)-eicosatetraenoate + A + H2O

  Catalysed by SLC7A5, MOCOS, PTGS2extracellular space, cytosol

• 17R-hydroxy-(4Z,7Z,10Z,13Z,15E,19Z)-docosahexaenoateReach from here →
  1. transport of alanine and cysteine (cytosol to extracellular)
  2. Mo-molybdopterin + L-cysteine + AH2 = thio-Mo-molybdopterin + L-alanine + A + H2O
  3. (4Z,7Z,10Z,13Z,16Z,19Z)-docosahexaenoate + AH2 + O2 = 17R-hydroxy-(4Z,7Z,10Z,13Z,15E,19Z)-docosahexaenoate + A + H2O

  Catalysed by SLC7A5, MOCOS, PTGS2extracellular space, cytosol

• 13-hydroxy-(4Z,7Z,10Z,14E,16Z,19Z)-docosahexaenoateReach from here →
  1. transport of alanine and cysteine (cytosol to extracellular)
  2. Mo-molybdopterin + L-cysteine + AH2 = thio-Mo-molybdopterin + L-alanine + A + H2O
  3. (4Z,7Z,10Z,13Z,16Z,19Z)-docosahexaenoate + AH2 + O2 = 13-hydroxy-(4Z,7Z,10Z,14E,16Z,19Z)-docosahexaenoate + A + H2O

  Catalysed by SLC7A5, MOCOS, PTGS2extracellular space, cytosol

• (18R)-hydroxy-(5Z,8Z,11Z,14Z,16E)-eicosapentaenoateReach from here →
  1. transport of alanine and cysteine (cytosol to extracellular)
  2. Mo-molybdopterin + L-cysteine + AH2 = thio-Mo-molybdopterin + L-alanine + A + H2O
  3. (5Z,8Z,11Z,14Z,17Z)-eicosapentaenoate + AH2 + O2 = (18R)-hydroxy-(5Z,8Z,11Z,14Z,16E)-eicosapentaenoate + A + H2O

  Catalysed by SLC7A5, MOCOS, PTGS2extracellular space, cytosol

• (15R)-hydroxy-(5Z,8Z,11Z,13E,17Z)-eicosapentaenoateReach from here →
  1. transport of alanine and cysteine (cytosol to extracellular)
  2. Mo-molybdopterin + L-cysteine + AH2 = thio-Mo-molybdopterin + L-alanine + A + H2O
  3. (5Z,8Z,11Z,14Z,17Z)-eicosapentaenoate + AH2 + O2 = (15R)-hydroxy-(5Z,8Z,11Z,13E,17Z)-eicosapentaenoate + A + H2O

  Catalysed by SLC7A5, MOCOS, PTGS2extracellular space, cytosol

• (11R)-hydroxy-(5Z,8Z,12E,14Z,17Z)-eicosapentaenoateReach from here →
  1. transport of alanine and cysteine (cytosol to extracellular)
  2. Mo-molybdopterin + L-cysteine + AH2 = thio-Mo-molybdopterin + L-alanine + A + H2O
  3. (5Z,8Z,11Z,14Z,17Z)-eicosapentaenoate + AH2 + O2 = (11R)-hydroxy-(5Z,8Z,12E,14Z,17Z)-eicosapentaenoate + A + H2O

  Catalysed by SLC7A5, MOCOS, PTGS2extracellular space, cytosol

• 15-hydroperoxy-(5Z,8Z,11Z,13E)-eicosatetraenoateReach from here →
  1. cystine to cysteine conversion
  2. transport of arachidonate and GSH (cytosol to extracellular)
  3. (5Z,8Z,11Z,14Z)-eicosatetraenoate + O2 = 15-hydroperoxy-(5Z,8Z,11Z,13E)-eicosatetraenoate

  Catalysed by ALOX15Bcytosol, extracellular space

• 5-hydroperoxy-(6E,8Z,11Z,14Z)-eicosatetraenoateReach from here →
  1. cystine to cysteine conversion
  2. transport of arachidonate and GSH (cytosol to extracellular)
  3. (5Z,8Z,11Z,14Z)-eicosatetraenoate + O2 = 5-hydroperoxy-(6E,8Z,11Z,14Z)-eicosatetraenoate

  Catalysed by ALOX15Bcytosol, extracellular space

• 13R-hydroxy-(7Z,10Z,14E,16Z,19Z)-docosapentaenoateReach from here →
  1. transport of alanine and cysteine (cytosol to extracellular)
  2. Mo-molybdopterin + L-cysteine + AH2 = thio-Mo-molybdopterin + L-alanine + A + H2O
  3. (7Z,10Z,13Z,16Z,19Z)-docosapentaenoate + AH2 + O2 = 13R-hydroxy-(7Z,10Z,14E,16Z,19Z)-docosapentaenoate + A + H2O

  Catalysed by SLC7A5, MOCOS, PTGS2extracellular space, cytosol

• (13S)-hydroxy-(9Z,11E)-octadecadienoateReach from here →
  1. L-cysteine hydrogen-sulfide-lyase (deaminating
  2. thiosulfate + 2 glutathione = glutathione disulfide + hydrogen sulfide + sulfite + 2 H(+)
  3. (13S)-hydroperoxy-(9Z,11E)-octadecadienoate + 2 glutathione = (13S)-hydroxy-(9Z,11E)-octadecadienoate + glutathione disulfide + H2O

  Catalysed by CTH, TSTD1, GPX1, GSTA1 and 2 morecytosolOne of 2 routes

• thiamine(1+) diphosphateReach from here →
  1. L-cysteine hydrogen-sulfide-lyase (deaminating
  2. pyruvate:thiamin diphosphate acetaldehydetransferase (decarboxylating)
  3. 2-(alpha-hydroxyethyl)thiamine-diphosphate[m] + lipoamide[m] = S-acetyldihydrolipoamide[m] + thiamin-PP[m]

  Catalysed by CTH, PDHA1, PDHB, PDHA2 and 1 morecytosol, mitochondrial matrix