The Enzyme Database

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Accepted name: [acyl-carrier-protein] phosphodiesterase
Reaction: holo-[acyl-carrier protein] + H2O = 4′-phosphopantetheine + apo-[acyl-carrier protein]
Other name(s): ACP hydrolyase; ACP phosphodiesterase; AcpH; [acyl-carrier-protein] 4′-pantetheine-phosphohydrolase; holo-[acyl-carrier-protein] 4′-pantetheine-phosphohydrolase
Systematic name: holo-[acyl-carrier protein] 4′-pantetheine-phosphohydrolase
Comments: The enzyme cleaves acyl-[acyl-carrier-protein] species with acyl chains of 6-16 carbon atoms although it appears to demonstrate a preference for the unacylated acyl-carrier protein (ACP) and short-chain ACPs over the medium- and long-chain species [3]. Deletion of the gene encoding this enzyme abolishes ACP cofactor turnover in vivo [3]. Activation of apo-ACP to form the holoenzyme is carried out by EC, holo-[acyl-carrier-protein] synthase.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 37288-21-4
1.  Sobhy, C. Regulation of fatty acid synthetase activity. The 4′-phosphopantetheine hydrolase of rat liver. J. Biol. Chem. 254 (1979) 8561–8566. [DOI] [PMID: 224058]
2.  Vagelos, P.R. and Larrabee, A.R. Acyl carrier protein. IX. Acyl carrier protein hydrolase. J. Biol. Chem. 242 (1967) 1776–1781. [DOI] [PMID: 4290442]
3.  Thomas, J. and Cronan, J.E. The enigmatic acyl carrier protein phosphodiesterase of Escherichia coli: genetic and enzymological characterization. J. Biol. Chem. 280 (2005) 34675–34683. [DOI] [PMID: 16107329]
[EC created 1972, modified 2006]

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