(R)-3-hydroxybutyric acid

Three steps

• (2S)-2-phospholactateReach from here →
  1. transport of (R)-3-hydroxybutanoate and pyruvate (cytosol to extracellular)
  2. (S)-lactate + NAD(+) = pyruvate + NADH + H(+)
  3. (2S)-2-phospholactate + H2O = (S)-lactate + phosphate

  Catalysed by SLC16A4, SLC16A5, SLC16A3, SLC16A7 and 8 moreextracellular space, cytosolOne of 2 routes

• L-prolineReach from here →
  1. transport of (R)-3-hydroxybutanoate and pyruvate (cytosol to extracellular)
  2. (R)-3-Amino-2-methylpropanoate:pyruvate aminotransferase
  3. L-proline(out) + L-alanine(in) + Na(+)(out) = L-proline(in) + L-alanine(out) + Na(+)(in)

  Catalysed by SLC16A4, SLC16A5, SLC16A3, SLC16A7 and 4 moreextracellular space, cytosol, mitochondrial matrix, inner side of the membrane, outer side of the membraneOne of 2 routes

• prostaglandin E2Reach from here →
  1. transport of (R)-3-hydroxybutanoate and pyruvate (cytosol to extracellular)
  2. (S)-lactate + NAD(+) = pyruvate + NADH + H(+)
  3. prostaglandin E2(out) + 2 (S)-lactate(in) = prostaglandin E2(in) + 2 (S)-lactate(out)

  Catalysed by SLC16A4, SLC16A5, SLC16A3, SLC16A7 and 8 moreextracellular space, cytosol, inner side of the membrane, outer side of the membraneOne of 4 routes

• L-cysteinylglycineReach from here →
  1. transport of (R)-3-hydroxybutanoate and pyruvate (cytosol to extracellular)
  2. (R)-3-Amino-2-methylpropanoate:pyruvate aminotransferase
  3. gamma-glutamyltransferase (alanine)

  Catalysed by SLC16A4, SLC16A5, SLC16A3, SLC16A7 and 9 moreextracellular space, cytosol, mitochondrial matrixOne of 2 routes

• dTMPReach from here →
  1. transport of (R)-3-hydroxybutanoate and pyruvate (cytosol to extracellular)
  2. pyruvate kinase (dTDP)
  3. DTDP Diphosphohydrolase

  Catalysed by SLC16A4, SLC16A5, SLC16A3, SLC16A7 and 7 moreextracellular space, cytosolOne of 5 routes

• a 1-acyl-sn-glycero-3-phospho-L-serineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. a 1,2-diacyl-sn-glycero-3-phospho-L-serine + N-(acetyl)-sphing-4-enine = 1-O-acyl-N-(acetyl)-sphing-4-enine + a 1-acyl-sn-glycero-3-phospho-L-serine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosol

• a 1-acyl-sn-glycero-3-phosphoethanolamineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. N-(acetyl)-sphing-4-enine + a 1,2-diacyl-sn-glycero-3-phosphoethanolamine = 1-O-acyl-N-(acetyl)-sphing-4-enine + a 1-acyl-sn-glycero-3-phosphoethanolamine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosol

• 1-acyl-sn-glycero-3-phospho-(1'-sn-glycerol)Reach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. a 1,2-diacyl-sn-glycero-3-phospho-(1'-sn-glycerol) + N-(acetyl)-sphing-4-enine = 1-O-acyl-N-(acetyl)-sphing-4-enine + 1-acyl-sn-glycero-3-phospho-(1'-sn-glycerol)

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosol

• a 2-acyl-sn-glycero-3-phosphoethanolamineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. N-(acetyl)-sphing-4-enine + a 1,2-diacyl-sn-glycero-3-phosphoethanolamine = 1-O-acyl-N-(acetyl)-sphing-4-enine + a 2-acyl-sn-glycero-3-phosphoethanolamine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosol

• a 2-acyl-sn-glycero-3-phospho-L-serineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. a 1,2-diacyl-sn-glycero-3-phospho-L-serine + N-(acetyl)-sphing-4-enine = a 2-acyl-sn-glycero-3-phospho-L-serine + 1-O-acyl-N-(acetyl)-sphing-4-enine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosol

• 2-acetamido-2-deoxy-D-glucopyranose 1-phosphateReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-acetyl-D-glucosamine 6-phosphate + H2O = D-glucosamine 6-phosphate + acetate
  3. phosphoglucomutase (N-acetylglucosamine-6-phosphate)

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosol

• Mo-molybdopterinReach from here →
  1. transport of (R)-3-hydroxybutanoate and pyruvate (cytosol to extracellular)
  2. (R)-3-Amino-2-methylpropanoate:pyruvate aminotransferase
  3. Mo-molybdopterin + L-cysteine + AH2 = thio-Mo-molybdopterin + L-alanine + A + H2O

  Catalysed by SLC16A4, SLC16A5, SLC16A3, SLC16A7 and 4 moreextracellular space, cytosol, mitochondrial matrix

• 1-octadecanoyl-sn-glycero-3-phospho-(1'-sn-glycerol)Reach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-octadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phospho-(1'-sn-glycerol) + N-(acetyl)-sphing-4-enine = 1-octadecanoyl-sn-glycero-3-phospho-(1'-sn-glycerol) + 1-(9Z-octadecenoyl)-N-(acetyl)-sphing-4-enine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosol

• 1-hexadecanoyl-sn-glycero-3-phosphocholineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + N-(acetyl)-sphing-4-enine = 1-(9Z-octadecenoyl)-N-(acetyl)-sphing-4-enine + 1-hexadecanoyl-sn-glycero-3-phosphocholine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosolOne of 4 routes

• 1-hexadecanoyl-sn-glycero-3-phosphoethanolamineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphoethanolamine + N-(acetyl)-sphing-4-enine = 1-(9Z-octadecenoyl)-N-(acetyl)-sphing-4-enine + 1-hexadecanoyl-sn-glycero-3-phosphoethanolamine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosolOne of 3 routes

• CHEBI:730073Reach from here →
  1. transport of (R)-3-hydroxybutanoate and L-lactate (cytosol to extracellular)
  2. transport of L-lactate and urate (cytosol to extracellular)
  3. Peroxidase

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A8 and 3 moreextracellular space, cytosol, nucleusOne of 3 routes

• 1-octadecanoyl-sn-glycero-3-phosphocholineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-octadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + N-(acetyl)-sphing-4-enine = 1-(9Z-octadecenoyl)-N-(acetyl)-sphing-4-enine + 1-octadecanoyl-sn-glycero-3-phosphocholine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosolOne of 3 routes

• 4-acetamidobutanalReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-acetylputrescine + H2O = putrescine + acetate
  3. N-Acetylputrescine:oxygen oxidoreductase(deaminating)(flavin-containing)

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 6 moreextracellular space, cytosolOne of 2 routes

• (2S)-2-aminobutanoateReach from here →
  1. transport of (R)-3-hydroxybutanoate and pyruvate (cytosol to extracellular)
  2. (R)-3-Amino-2-methylpropanoate:pyruvate aminotransferase
  3. 2-oxobutanoate + L-alanine = (2S)-2-aminobutanoate + pyruvate

  Catalysed by SLC16A4, SLC16A5, SLC16A3, SLC16A7 and 3 moreextracellular space, cytosol, mitochondrial matrixOne of 6 routes

• 1-(9Z-octadecenoyl)-N-(acetyl)-sphing-4-enineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1,2-di-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + N-(acetyl)-sphing-4-enine = 1-(9Z-octadecenoyl)-N-(acetyl)-sphing-4-enine + 1-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosolOne of 8 routes

• 2-(9Z-octadecenoyl)-sn-glycero-3-phosphocholineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + N-(acetyl)-sphing-4-enine = 1-hexadecanoyl-N-(acetyl)-sphing-4-enine + 2-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosolOne of 2 routes

• 1-octadecanoyl-N-(acetyl)-sphing-4-enineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-octadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + N-(acetyl)-sphing-4-enine = 1-octadecanoyl-N-(acetyl)-sphing-4-enine + 2-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosolOne of 5 routes

• 2-octadecanoyl-sn-glycero-3-phosphocholineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-(9Z)-octadecenoyl-2-octadecanoyl-sn-glycero-3-phosphocholine + N-(acetyl)-sphing-4-enine = 2-octadecanoyl-sn-glycero-3-phosphocholine + 1-(9Z-octadecenoyl)-N-(acetyl)-sphing-4-enine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosol

• 1-hexadecanoyl-N-(acetyl)-sphing-4-enineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + N-(acetyl)-sphing-4-enine = 1-hexadecanoyl-N-(acetyl)-sphing-4-enine + 2-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosolOne of 9 routes

• 2-hexadecanoyl-sn-glycero-3-phosphocholineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-(9Z-octadecenoyl)-2-hexadecanoyl-sn-glycero-3-phosphocholine + N-(acetyl)-sphing-4-enine = 1-(9Z-octadecenoyl)-N-(acetyl)-sphing-4-enine + 2-hexadecanoyl-sn-glycero-3-phosphocholine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosol

• 2-(5Z,8Z,11Z,14Z)-eicosatetraenoyl-sn-glycero-3-phosphocholineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-hexadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-phosphocholine + N-(acetyl)-sphing-4-enine = 1-hexadecanoyl-N-(acetyl)-sphing-4-enine + 2-(5Z,8Z,11Z,14Z)-eicosatetraenoyl-sn-glycero-3-phosphocholine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosolOne of 2 routes

• 1-(5Z,8Z,11Z,14Z)-eicosatetraenoyl-N-(acetyl)-sphing-4-enineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-hexadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-phosphocholine + N-(acetyl)-sphing-4-enine = 1-(5Z,8Z,11Z,14Z)-eicosatetraenoyl-N-(acetyl)-sphing-4-enine + 1-hexadecanoyl-sn-glycero-3-phosphocholine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosolOne of 3 routes

• 2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphocholineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphocholine + N-(acetyl)-sphing-4-enine = 2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphocholine + 1-hexadecanoyl-N-(acetyl)-sphing-4-enine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosol

• 2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphocholineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-hexadecanoyl-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphocholine + N-(acetyl)-sphing-4-enine = 2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphocholine + 1-hexadecanoyl-N-(acetyl)-sphing-4-enine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosol

• 1-(9Z,12Z-octadecadienoyl)-N-acetylsphing-4-enineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphocholine + N-(acetyl)-sphing-4-enine = 1-(9Z,12Z-octadecadienoyl)-N-acetylsphing-4-enine + 1-hexadecanoyl-sn-glycero-3-phosphocholine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosolOne of 3 routes

• 1-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-N-(acetyl)-sphing-4-enineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-hexadecanoyl-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphocholine + N-(acetyl)-sphing-4-enine = 1-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-N-(acetyl)-sphing-4-enine + 1-hexadecanoyl-sn-glycero-3-phosphocholine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosol

• 2-(9Z-octadecenoyl)-sn-glycero-3-phosphoethanolamineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphoethanolamine + N-(acetyl)-sphing-4-enine = 2-(9Z-octadecenoyl)-sn-glycero-3-phosphoethanolamine + 1-hexadecanoyl-N-(acetyl)-sphing-4-enine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosol

• 2-(9Z,12Z)-octadecadienoyl-sn-glycero-3-phosphoethanolamineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphoethanolamine + N-(acetyl)-sphing-4-enine = 2-(9Z,12Z)-octadecadienoyl-sn-glycero-3-phosphoethanolamine + 1-hexadecanoyl-N-(acetyl)-sphing-4-enine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosol

• 2-(5Z,8Z,11Z,14Z)-eicosatetraenoyl-sn-glycero-3-phosphoethanolamineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-hexadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-phosphoethanolamine + N-(acetyl)-sphing-4-enine = 2-(5Z,8Z,11Z,14Z)-eicosatetraenoyl-sn-glycero-3-phosphoethanolamine + 1-hexadecanoyl-N-(acetyl)-sphing-4-enine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosol

• 16alpha,17alpha-dihydroxyprogesteroneReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. cytochrome P450 (17alpha-hydroxyprogesterone)
  3. 17alpha-hydroxyprogesterone + reduced [NADPH--hemoprotein reductase] + O2 = 16alpha,17alpha-dihydroxyprogesterone + oxidized [NADPH--hemoprotein reductase] + H2O + H(+)

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 1 moreextracellular space, cytosol, endoplasmic reticulum

• 2-acyl-sn-glycero-3-phospho-(1'-sn-glycerol)Reach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. a 1,2-diacyl-sn-glycero-3-phospho-(1'-sn-glycerol) + N-(acetyl)-sphing-4-enine = 2-acyl-sn-glycero-3-phospho-(1'-sn-glycerol) + 1-O-acyl-N-(acetyl)-sphing-4-enine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosol

• 2-iminobutanoateReach from here →
  1. transport of (R)-3-hydroxybutanoate and pyruvate (cytosol to extracellular)
  2. 2-oxobutanoate + L-alanine = (2S)-2-aminobutanoate + pyruvate
  3. 2-iminobutanoate + H2O = 2-oxobutanoate + NH4(+)

  Catalysed by SLC16A4, SLC16A5, SLC16A3, SLC16A7 and 4 moreextracellular space, cytosol

• 2-aminoprop-2-enoateReach from here →
  1. transport of (R)-3-hydroxybutanoate and pyruvate (cytosol to extracellular)
  2. D-serine = pyruvate + NH4(+)
  3. D-serine = 2-aminoprop-2-enoate + H2O

  Catalysed by SLC16A4, SLC16A5, SLC16A3, SLC16A7 and 3 moreextracellular space, cytosol

• 2-(9Z-octadecenoyl)-sn-glycero-3-phospho-L-serineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-octadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phospho-L-serine + N-(acetyl)-sphing-4-enine = 1-octadecanoyl-N-(acetyl)-sphing-4-enine + 2-(9Z-octadecenoyl)-sn-glycero-3-phospho-L-serine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosol

• 9-cis-retinalReach from here →
  1. transport of (R)-3-hydroxybutanoate and retinoate (cytosol to extracellular)
  2. retinoate reduction
  3. retinol binding protein (retinal)

  Catalysed by SLC16A4, SLC16A5, SLC16A8, SLC16A1 and 2 moreextracellular space, cytosol, endoplasmic reticulumOne of 2 routes

• 1-octadecanoyl-sn-glycero-3-phosphoserineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. 1-octadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phospho-L-serine + N-(acetyl)-sphing-4-enine = 1-octadecanoyl-sn-glycero-3-phosphoserine + 1-(9Z-octadecenoyl)-N-(acetyl)-sphing-4-enine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosol

• 1-O-acyl-N-(acetyl)-sphing-4-enineReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. N-(acetyl)-sphing-4-enine + a 1,2-diacyl-sn-glycero-3-phosphocholine = 1-O-acyl-N-(acetyl)-sphing-4-enine + a 1-acyl-sn-glycero-3-phosphocholine

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosolOne of 8 routes

• O-3-oxobutanoyl-(R)-carnitineReach from here →
  1. (R)-3-Hydroxybutanoate:NAD+ oxidoreductase
  2. acetoacetate + ATP + CoA = acetoacetyl-CoA + AMP + diphosphate
  3. acetoacetyl-CoA + (R)-carnitine = O-3-oxobutanoyl-(R)-carnitine + CoA

  Catalysed by BDH1, BDH2, AACS, CRATmitochondrial matrix

• N-(acetyl)-sphing-4-enine-1-phosphateReach from here →
  1. transport of (R)-3-hydroxybutanoate and acetate (cytosol to extracellular)
  2. N-(acetyl)-sphing-4-enine + H2O = sphing-4-enine + acetate
  3. N-(acetyl)-sphing-4-enine + ATP = N-(acetyl)-sphing-4-enine-1-phosphate + ADP + H(+)

  Catalysed by SLC16A4, SLC16A5, SLC16A7, SLC16A1 and 2 moreextracellular space, cytosol

• thromboxane B2Reach from here →
  1. transport of (R)-3-hydroxybutanoate and pyruvate (cytosol to extracellular)
  2. (S)-lactate + NAD(+) = pyruvate + NADH + H(+)
  3. thromboxane B2(out) + 2 (S)-lactate(in) = thromboxane B2(in) + 2 (S)-lactate(out)

  Catalysed by SLC16A4, SLC16A5, SLC16A3, SLC16A7 and 8 moreextracellular space, cytosol, inner side of the membrane, outer side of the membraneOne of 2 routes

• thiamine(1+) diphosphateReach from here →
  1. transport of (R)-3-hydroxybutanoate and pyruvate (cytosol to extracellular)
  2. pyruvate:thiamin diphosphate acetaldehydetransferase (decarboxylating)
  3. 2-(alpha-hydroxyethyl)thiamine-diphosphate[m] + lipoamide[m] = S-acetyldihydrolipoamide[m] + thiamin-PP[m]

  Catalysed by SLC16A4, SLC16A5, SLC16A3, SLC16A7 and 6 moreextracellular space, cytosol, mitochondrial matrix