In vitro turnover of oleate and arachidonate in lipids of Discopyge tschudii electrocyte membranes

Hugo R. Arias, Francisco J. Barrantes

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

1. 1. The incorporation and distribution of two unsaturated fatty acids, [3H]arachidonate and [3H]oleate, into lipids of living electrocytes was studied in Discopyge tschudii (Torpedinidae) in vitro. 2. 2. Thirty and 40% of the label was found in phospholipids and neutral lipids respectively, triacylglycerols accumulating the greater part. In terms of lipid mass, polyphosphoinositides displayed the highest turnover of both fatty acids. In general, oleate turnover was faster than that of arachidonate. 3. 3. Fatty acid turnover appears to be an active process in the electrocyte, deacylation-reacylation processes dominating acyl group metabolism. Enzymes catalysing these reactions may play important functions in the control of physical properties in excitable membranes.

Original languageEnglish
Pages (from-to)623-627
Number of pages5
JournalComparative Biochemistry and Physiology -- Part B: Biochemistry and
Volume86
Issue number3
DOIs
StatePublished - 1 Jan 1987
Externally publishedYes

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Oleic Acid
Membranes
Lipids
Fatty Acids
Torpedo
Phosphatidylinositol Phosphates
Unsaturated Fatty Acids
Metabolism
Labels
Phospholipids
Triglycerides
Physical properties
Enzymes
In Vitro Techniques

Cite this

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abstract = "1. 1. The incorporation and distribution of two unsaturated fatty acids, [3H]arachidonate and [3H]oleate, into lipids of living electrocytes was studied in Discopyge tschudii (Torpedinidae) in vitro. 2. 2. Thirty and 40{\%} of the label was found in phospholipids and neutral lipids respectively, triacylglycerols accumulating the greater part. In terms of lipid mass, polyphosphoinositides displayed the highest turnover of both fatty acids. In general, oleate turnover was faster than that of arachidonate. 3. 3. Fatty acid turnover appears to be an active process in the electrocyte, deacylation-reacylation processes dominating acyl group metabolism. Enzymes catalysing these reactions may play important functions in the control of physical properties in excitable membranes.",
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In vitro turnover of oleate and arachidonate in lipids of Discopyge tschudii electrocyte membranes. / Arias, Hugo R.; Barrantes, Francisco J.

In: Comparative Biochemistry and Physiology -- Part B: Biochemistry and, Vol. 86, No. 3, 01.01.1987, p. 623-627.

Research output: Contribution to journalArticle

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