Hutson JL, Higgins JA. Reversible activation/inactivation of the deacylation/acylation cycle in rat liver microsomes.
Biosci Rep 1987;
7:73-80. [PMID:
3620603 DOI:
10.1007/bf01122730]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Rat liver microsomes incorporate [14C]palmitoyl CoA into membrane phospholipids via the deacylation/acylation cycle. This activity is reversibly inactivated/activated by treatment of the microsomes with ATP, MgCl2, and 105,000 g supernatant or with 105,000 g supernatant alone. These observations suggest that the acylation cycle is controlled by a mechanism involving phosphorylation/dephosphorylation. As the pool of lysolecithin in the membranes is not altered by conditions increasing incorporation of palmitoyl CoA into phospholipid, it is probable that the site of regulation of deacylation/acylation is at the acyltransferase rather than the phospholipase.
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