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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
|
pubmed:dateCreated |
1997-6-30
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pubmed:abstractText |
The role of 24:5n-3 and 24:6n-3 as intermediate in the formation of 22:6n-3 in trout liver was examined. Microsomes prepared from trout liver converted [1-14C]-eicosapentaenoic acid (20:5n-3) to 24: 5n-3 and 24:6n-3 but not docosahexaenoic acid (22:6n-3). The radiolabeled 24:5n-3 and 24:6n-3 were isolated from the microsomal incubations by argentation chromatography and used as substrates in incubations with hepatocytes isolated from trout liver. Both 14C-labelled 24:6n-3 and 22:6n-3-were produced by hepatocytes incubated with radiolabelled 24:5n-3. When hepatocytes were incubated with radiolabelled 24:6n-3, the amount of radioactivity recovered in 22:6n-3 over 6 hr increased in direct relation to the decrease observed in the amount of radioactivity recovered in 24:6n-3. The results suggest that the formation of 22:6n-3 in trout liver does not involve delta 4 desaturation of 22:5n-3 but rather proceeds via the delta 6 desaturation of 24:5n-3 with the subsequent chain shortening of the 24:6n-3 produced.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Feb
|
pubmed:issn |
1096-4959
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pubmed:author | |
pubmed:issnType |
Print
|
pubmed:volume |
116
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pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
263-7
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:9159889-Animals,
pubmed-meshheading:9159889-Carbon Radioisotopes,
pubmed-meshheading:9159889-Docosahexaenoic Acids,
pubmed-meshheading:9159889-Eicosapentaenoic Acid,
pubmed-meshheading:9159889-Fatty Acids, Unsaturated,
pubmed-meshheading:9159889-Microsomes, Liver,
pubmed-meshheading:9159889-Molecular Structure,
pubmed-meshheading:9159889-Trout
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pubmed:year |
1997
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pubmed:articleTitle |
Biosynthesis of docosahexaenoic acid in trout hepatocytes proceeds via 24-carbon intermediates.
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pubmed:affiliation |
NERC Unit of Aquatic Biochemistry, Department of Molecular and Biological Sciences, University of Stirling, Scotland, U.K.
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pubmed:publicationType |
Journal Article,
In Vitro,
Research Support, Non-U.S. Gov't
|