Biology:Beta-ketoacyl-acyl-carrier-protein synthase I
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| 3-oxoacyl-[acyl-carrier-protein] synthase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 2.3.1.41 | ||||||||
| CAS number | 9077-10-5 | ||||||||
| 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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In enzymology, a beta-ketoacyl-acyl-carrier-protein synthase I (EC 2.3.1.41) is an enzyme that catalyzes the chemical reaction
- an acyl-acyl-carrier-protein + malonyl-acyl-carrier-protein [math]\displaystyle{ \rightleftharpoons }[/math] a 3-oxoacyl-acyl-carrier-protein + CO2 + acyl-carrier-protein
Thus, the two substrates of this enzyme are acyl-acyl-carrier-protein and malonyl-acyl-carrier-protein, whereas its 3 products are 3-oxoacyl-acyl-carrier-protein, CO2, and acyl carrier protein. This enzyme participates in fatty acid biosynthesis. This enzyme belongs to the family of transferases, specifically those acyltransferases transferring groups other than aminoacyl groups.
Nomenclature
The systematic name of this enzyme class is acyl-[acyl-carrier-protein]:malonyl-[acyl-carrier-protein] C-acyltransferase (decarboxylating).
Other names in common use include:
- beta-ketoacyl-ACP synthase I,
- beta-ketoacyl synthetase,
- beta-ketoacyl-ACP synthetase,
- beta-ketoacyl-acyl carrier protein synthetase,
- beta-ketoacyl-[acyl carrier protein] synthase,
- beta-ketoacylsynthase,
- condensing enzyme (CE),
- 3-ketoacyl-acyl carrier protein synthase,
- fatty acid condensing enzyme,
- acyl-malonyl(acyl-carrier-protein)-condensing enzyme,
- acyl-malonyl acyl carrier protein-condensing enzyme,
- beta-ketoacyl acyl carrier protein synthase,
- 3-oxoacyl-[acyl-carrier-protein] synthase,
- 3-oxoacyl:ACP synthase I,
- KASI,
- KAS I,
- FabF1, and
- FabB.
References
- "Acetyl-CoA acyl carrier protein transacylase". Methods Enzymol.. Methods in Enzymology 14: 50–53. 1969. doi:10.1016/S0076-6879(69)14009-4. ISBN 978-0-12-181871-5. https://archive.org/details/lipids0014unse/page/50.
- "Acyl carrier protein". Advances in Enzymology and Related Areas of Molecular Biology 36: 269–311. 1972. doi:10.1002/9780470122815.ch8. PMID 4561013.
- "Studies on the mechanism of fatty acid synthesis. XVI. Preparation and general properties of acyl-malonyl acyl carrier protein-condensing enzyme from Escherichia coli". The Journal of Biological Chemistry 241 (5): 1159–65. Mar 1966. PMID 5327099.
- "Multiple forms of beta-ketoacyl-acyl carrier protein synthetase in Escherichia coli". The Journal of Biological Chemistry 250 (14): 5289–94. Jul 1975. PMID 237914.
- "Structural, enzymatic, and genetic studies of beta-ketoacyl-acyl carrier protein synthases I and II of Escherichia coli". The Journal of Biological Chemistry 255 (24): 11949–56. Dec 1980. PMID 7002930.
- "Functional replacement of the FabA and FabB proteins of Escherichia coli fatty acid synthesis by Enterococcus faecalis FabZ and FabF homologues". The Journal of Biological Chemistry 279 (33): 34489–95. Aug 2004. doi:10.1074/jbc.M403874200. PMID 15194690.
- Neidhardt, F.C. (Ed.), Escherichia coli and Salmonella: Cellular and Molecular Biology, 2nd ed., vol. 1, ASM Press, Washington, DC, 1996, p. 612-636.
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