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    Peroxisomal-microsomal communication in unsaturated fatty acid metabolism

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    Baykousheva_FEBS Lett_1995.PDF (323.7Kb)
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    Date
    1995
    Author
    Baykousheva, Svetla P.
    Luthria, Devanand L.
    Sprecher, Howard
    Citation
    Baykousheva, Svetla P, Luthria, Devanand L, and Sprecher, Howard.1995. Peroxisomal-microsomal communication in unsaturated fatty acid metabolism. FEBS Letters 367 (2):198-200.
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    Abstract
    The addition of 1-acyl-sn-glycero-3-phosphocholine (1-acyl-GPC) to peroxisomes decreased the production of acid-soluble radioactivity formed by β-oxidation of [1-14C]arachidonate due to substrate removal by esterification into the acceptor. This peroxisomal-associated acyl-CoA:1-acyl-GPC acyltransferase activity was due to microsomal contamination. The production of acid-soluble radioactivity from [1-14C]7,10,13,16–22:4, but not from [3-14C]7,10,13,16–22:4 was independent of 1-acyl-GPC, with and without microsomes. By comparing rates of peroxisomal β-oxidation with those for microsomal acylation, it was shown that the preferred metabolic fate of arachidonate, when added directly to incubations, or generated via β-oxidation, was esterification by microsomal 1-acyl-GPC acyltransferase, rather than continued peroxisomal β-oxidation.
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    http://hdl.handle.net/1903/11823
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