Diacylglycerol causes major structural transitions in phospholipid bilayer membranes.

Abstract:

:We demonstrate for the first time that major structural changes are imposed on various phospholipid bilayers by diacylglycerol, a product of phosphatidylinositol metabolism. By 5 mole percent in phosphatidylethanolamine a lamellar to hexagonal transition starts that is complete at 10 mole percent. At 30 mole percent it causes the same transition in phosphatidylcholine and forms a cubic phase at 80 mole percent. Diacylglycerol disorders the phosphatidylserine lamellar phase. We view the formation of the non-lamellar phases as diagnostic of the destabilizations that diacylglycerol can cause in membranes. We suggest how DAG may act both in its specific activation of membrane enzymes and in inducing membrane fusion.

authors

Das S,Rand RP

doi

10.1016/0006-291x(84)91580-8

subject

Has Abstract

pub_date

1984-10-30 00:00:00

pages

491-6

issue

2

eissn

0006-291X

issn

1090-2104

pii

0006-291X(84)91580-8

journal_volume

124

pub_type

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