Citrate (pro-3S)-lyase
In enzymology, a citrate (pro-3S)-lyase (EC 4.1.3.6) is an enzyme that catalyzes the chemical reaction
- citrate acetate + oxaloacetate
| citrate (pro-3S)-lyase | |||||||||
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| Identifiers | |||||||||
| EC number | 4.1.3.6 | ||||||||
| CAS number | 9012-83-3 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
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Hence, this enzyme has one substrate, citrate, and two products, acetate and oxaloacetate.
This enzyme belongs to the family of lyases, specifically the oxo-acid-lyases, which cleave carbon-carbon bonds. The systematic name of this enzyme class is citrate oxaloacetate-lyase (forming acetate from the pro-S carboxymethyl group of citrate). Other names in common use include citrase, citratase, citritase, citridesmolase, citrate aldolase, citric aldolase, citrate lyase, citrate oxaloacetate-lyase, and citrate oxaloacetate-lyase [(pro-3S)-CH2COO-->acetate]. This enzyme participates in citrate cycle and two-component system - general.
Structural studies
As of late 2007, 4 structures have been solved for this class of enzymes, with PDB accession codes 1U5H, 1U5V, 1Z6K, and 2HJ0.
References
- DAGLEY S, DAWES EA (1955). "Citridesmolase: its properties and mode of action". Biochim. Biophys. Acta. 17 (2): 177–84. doi:10.1016/0006-3002(55)90348-6. PMID 13239657.
- Dimroth P, Loyal R, Eggerer H (1977). "Characterization of the isolated transferase subunit of citrate lyase as a CoA-Transferase. Evidence against a covalent enzyme-substrate intermediate". Eur. J. Biochem. 80 (2): 479–88. doi:10.1111/j.1432-1033.1977.tb11903.x. PMID 336371.