Inhibitory effect of arachidonic acid on GTPase activating protein is antagonized by 1-stearoyl, 2-arachidonoyl glycerol.

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.

authors

Homayoun P,Stacey DW

doi

10.1006/bbrc.1993.1982

subject

Has Abstract

pub_date

1993-08-16 00:00:00

pages

1413-9

issue

3

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(83)71982-0

journal_volume

194

pub_type

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