| Mitochondrial membrane composition of two Arctic marine bivalve mollusks, Serripes groenlandicus and Mya truncata. | |
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MedLine Citation:
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PMID: 10188597 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The phospholipid and fatty acid composition of gill mitochondria membranes from two Arctic marine bivalve mollusks, Mya truncata and Serripes groenlandicus, were examined. These animals were collected from the Arctic Ocean, where waters remain below 0 degrees C throughout the year. In both species, the primary membrane phospholipids were phosphatidylcholine, and phosphatidylethanolamine. Although a low ratio of bilayer-stabilizing phospholipids to bilayer-destabilizing phospholipids is frequently associated with cold acclimation in temperate species, this ratio is very different between the two species. The monounsaturated fatty acid 20:1 was abundant in the membranes of both Arctic species equaling 13.0% of the fatty acid composition in S. groenlandicus, and 17.7% in M. truncata. Polyunsaturated fatty acids were relatively low in the Arctic species, equaling 35.9% of total membrane fatty acids compared to that of temperate zone mollusks. It is suggested that monoenes are common in the tissues of Arctic species since they play a role in maintaining membrane function at subzero temperatures. |
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Authors:
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T E Gillis; J S Ballantyne |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Lipids Volume: 34 ISSN: 0024-4201 ISO Abbreviation: Lipids Publication Date: 1999 Jan |
Date Detail:
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Created Date: 1999-05-20 Completed Date: 1999-05-20 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 0060450 Medline TA: Lipids Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 53-7 Citation Subset: IM |
Affiliation:
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Cardiac Membrane Research Laboratory, School of Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adaptation, Physiological Animals Arctic Regions Bivalvia / physiology, ultrastructure Cold Temperature Fatty Acids / analysis Fatty Acids, Unsaturated / analysis, metabolism Gills / chemistry Intracellular Membranes / chemistry* Mitochondria / chemistry, ultrastructure* Mollusca / physiology, ultrastructure* Phospholipids / analysis, chemistry |
| Chemical | |
Reg. No./Substance:
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0/Fatty Acids; 0/Fatty Acids, Unsaturated; 0/Phospholipids |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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