Biology:Acyl-(acyl-carrier-protein)—UDP-N-acetylglucosamine O-acyltransferase
| acyl-[acyl-carrier-protein]-UDP-N-acetylglucosamine O-acyltransferase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 2.3.1.129 | ||||||||
| CAS number | 105843-69-4 | ||||||||
| 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, an acyl-[acyl-carrier-protein]-UDP-N-acetylglucosamine O-acyltransferase (EC 2.3.1.129) is an enzyme that catalyzes the chemical reaction
- (R)-3-hydroxytetradecanoyl-[acyl-carrier-protein] + UDP-N-acetylglucosamine [math]\displaystyle{ \rightleftharpoons }[/math] [acyl-carrier-protein] + UDP-3-O-(3-hydroxytetradecanoyl)-N-acetylglucosamine
Thus, the two substrates of this enzyme are (R)-3-hydroxytetradecanoyl-acyl-carrier-protein and UDP-N-acetylglucosamine, whereas its two products are acyl-carrier-protein and UDP-3-O-(3-hydroxytetradecanoyl)-N-acetylglucosamine.
This enzyme belongs to the family of transferases, specifically those acyltransferases transferring groups other than aminoacyl groups. The systematic name of this enzyme class is (R)-3-hydroxytetradecanoyl-[acyl-carrier-protein]:UDP-N-acetylglucosamine 3-O-(3-hydroxytetradecanoyl) transferase. Other names in common use include UDP-N-acetylglucosamine acyltransferase and uridine diphosphoacetylglucosamine acyltransferase. This enzyme participates in lipopolysaccharide biosynthesis.
Structural studies
As of late 2007, 7 structures have been solved for this class of enzymes, with PDB accession codes 1J2Z, 1LXA, 2AQ9, 2JF2, 2JF3, 2QIA, and 2QIV.
References
- "The biosynthesis of gram-negative endotoxin. Formation of lipid A precursors from UDP-GlcNAc in extracts of Escherichia coli". J. Biol. Chem. 260 (29): 15536–41. 1985. PMID 3905795.
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