Enzymes
| UniProtKB help_outline | 6 proteins |
| Enzyme class help_outline |
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| GO Molecular Function help_outline |
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- Name help_outline (3S)-citramalyl-CoA Identifier CHEBI:58668 Charge -5 Formula C26H37N7O20P3S InChIKeyhelp_outline XYGOWHUIVNMEIA-XBVYHAPZSA-I SMILEShelp_outline CC(C)(COP([O-])(=O)OP([O-])(=O)OC[C@H]1O[C@H]([C@H](O)[C@@H]1OP([O-])([O-])=O)n1cnc2c(N)ncnc12)[C@@H](O)C(=O)NCCC(=O)NCCSC(=O)C[C@](C)(O)C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 5 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline acetyl-CoA Identifier CHEBI:57288 (Beilstein: 8468140) help_outline Charge -4 Formula C23H34N7O17P3S InChIKeyhelp_outline ZSLZBFCDCINBPY-ZSJPKINUSA-J SMILEShelp_outline CC(=O)SCCNC(=O)CCNC(=O)[C@H](O)C(C)(C)COP([O-])(=O)OP([O-])(=O)OC[C@H]1O[C@H]([C@H](O)[C@@H]1OP([O-])([O-])=O)n1cnc2c(N)ncnc12 2D coordinates Mol file for the small molecule Search links Involved in 321 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline pyruvate Identifier CHEBI:15361 (Beilstein: 3587721; CAS: 57-60-3) help_outline Charge -1 Formula C3H3O3 InChIKeyhelp_outline LCTONWCANYUPML-UHFFFAOYSA-M SMILEShelp_outline CC(=O)C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 213 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:22612 | RHEA:22613 | RHEA:22614 | RHEA:22615 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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The utilization of itaconate by Pseudomonas sp.
Cooper R.A., Kornberg H.L.
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The human knockout gene CLYBL connects itaconate to vitamin B12.
Shen H., Campanello G.C., Flicker D., Grabarek Z., Hu J., Luo C., Banerjee R., Mootha V.K.
CLYBL encodes a ubiquitously expressed mitochondrial enzyme, conserved across all vertebrates, whose cellular activity and pathway assignment are unknown. Its homozygous loss is tolerated in seemingly healthy individuals, with reduced circulating B<sub>12</sub> levels being the only and consistent ... >> More
CLYBL encodes a ubiquitously expressed mitochondrial enzyme, conserved across all vertebrates, whose cellular activity and pathway assignment are unknown. Its homozygous loss is tolerated in seemingly healthy individuals, with reduced circulating B<sub>12</sub> levels being the only and consistent phenotype reported to date. Here, by combining enzymology, structural biology, and activity-based metabolomics, we report that CLYBL operates as a citramalyl-CoA lyase in mammalian cells. Cells lacking CLYBL accumulate citramalyl-CoA, an intermediate in the C5-dicarboxylate metabolic pathway that includes itaconate, a recently identified human anti-microbial metabolite and immunomodulator. We report that CLYBL loss leads to a cell-autonomous defect in the mitochondrial B<sub>12</sub> metabolism and that itaconyl-CoA is a cofactor-inactivating, substrate-analog inhibitor of the mitochondrial B<sub>12</sub>-dependent methylmalonyl-CoA mutase (MUT). Our work de-orphans the function of human CLYBL and reveals that a consequence of exposure to the immunomodulatory metabolite itaconate is B<sub>12</sub> inactivation. << Less
Cell 171:771-782(2017) [PubMed] [EuropePMC]
This publication is cited by 2 other entries.
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Isolation and function of the subunits of citramalate lyase and formation of hybrids with the subunits of citrate lyase.
Dimroth P., Buckel W., Loyal R., Eggerer H.
Eur J Biochem 80:469-477(1977) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.
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Properties of R-citramalyl-coenzyme A lyase and its role in the autotrophic 3-hydroxypropionate cycle of Chloroflexus aurantiacus.
Friedmann S., Alber B.E., Fuchs G.
The autotrophic CO(2) fixation pathway (3-hydroxypropionate cycle) in Chloroflexus aurantiacus results in the fixation of two molecules of bicarbonate into one molecule of glyoxylate. Glyoxylate conversion to the CO(2) acceptor molecule acetyl-coenzyme A (CoA) requires condensation with propionyl- ... >> More
The autotrophic CO(2) fixation pathway (3-hydroxypropionate cycle) in Chloroflexus aurantiacus results in the fixation of two molecules of bicarbonate into one molecule of glyoxylate. Glyoxylate conversion to the CO(2) acceptor molecule acetyl-coenzyme A (CoA) requires condensation with propionyl-CoA (derived from one molecule of acetyl-CoA and one molecule of CO(2)) to beta-methylmalyl-CoA, which is converted to citramalyl-CoA. Extracts of autotrophically grown cells contained both S- and R-citramalyl-CoA lyase activities, which formed acetyl-CoA and pyruvate. Pyruvate is taken out of the cycle and used for cellular carbon biosynthesis. Both the S- and R-citramalyl-CoA lyases were up-regulated severalfold during autotrophic growth. S-Citramalyl-CoA lyase activity was found to be due to l-malyl-CoA lyase/beta-methylmalyl-CoA lyase. This promiscuous enzyme is involved in the CO(2) fixation pathway, forms acetyl-CoA and glyoxylate from l-malyl-CoA, and condenses glyoxylate with propionyl-CoA to beta-methylmalyl-CoA. R-Citramalyl-CoA lyase was further studied. Its putative gene was expressed and the recombinant protein was purified. This new enzyme belongs to the 3-hydroxy-3-methylglutaryl-CoA lyase family and is a homodimer with 34-kDa subunits that was 10-fold stimulated by adding Mg(2) or Mn(2+) ions and dithioerythritol. The up-regulation under autotrophic conditions suggests that the enzyme functions in the ultimate step of the acetyl-CoA regeneration route in C. aurantiacus. Genes similar to those involved in CO(2) fixation in C. aurantiacus, including an R-citramalyl-CoA lyase gene, were found in Roseiflexus sp., suggesting the operation of the 3-hydroxypropionate cycle in this bacterium. Incomplete sets of genes were found in aerobic phototrophic bacteria and in the gamma-proteobacterium Congregibacter litoralis. This may indicate that part of the reactions may be involved in a different metabolic process. << Less
J. Bacteriol. 189:2906-2914(2007) [PubMed] [EuropePMC]
This publication is cited by 3 other entries.