Abstract:
:The intrinsic GTPase activity of cellular protein p21ras is strongly increased by cytosolic GTPase activating protein (GAP). The activity of this enzyme has been shown to be inhibited by arachidonic acid. We report here that this inhibition is antagonized by the presence of 1-stearoyl, 2-arachidonoyl glycerol. This effect is structure specific and dose dependent, being maximum at 200 micrograms/ml of diacylglycerol (DG). These results suggest that production of DG in response to hormones or growth factors stimulation could indirectly modulate the interaction between p21ras and GAP.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Homayoun P,Stacey DWdoi
10.1006/bbrc.1993.1982subject
Has Abstractpub_date
1993-08-16 00:00:00pages
1413-9issue
3eissn
0006-291Xissn
1090-2104pii
S0006-291X(83)71982-0journal_volume
194pub_type
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