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Acidic phospholipids inhibit the phospholipase D activity of rat brain neuronal nuclei
J N Kanfer1, D G McCartney, I N Singh
1Department of Biochemistry and Molecular Biology, University of Manitoba, Winnipeg, Canada.
FEBS Letters
|March 25, 1996
Abstract:
An oleate dependent form of phospholipase D is present in rat brain neuronal nuclei and both the hydrolytic and transphosphatidylation activities measured. Several acidic phospholipids were found to inhibit this activity in a dose dependent manner. The IC50 values varied from 3.5 microM for PIP2 to 200 microM for phosphatidic acid. The hydrolysis of PIP2 by phospholipase C would be expected to result in the disinhibition of the oleate dependent phospholipase D activity.