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Fatty acid transport by vectorial acylation in mammals: roles played by different isoforms of rat long-chain acyl-CoA synthetases.

Authors: Tong, F  Black, PN  Coleman, RA  DiRusso, CC 
Citation: Tong F, etal., Arch Biochem Biophys. 2006 Mar 1;447(1):46-52. Epub 2006 Jan 23.
Pubmed: (View Article at PubMed) PMID:16466685
DOI: Full-text: DOI:10.1016/

Mammals express multiple isoforms of acyl-CoA synthetase (ACSL1 and ACSL3-6) in various tissues. These enzymes are essential for fatty acid metabolism providing activated intermediates for complex lipid synthesis, protein modification, and beta-oxidation. Yeast in contrast express four major ACSLs, which have well-defined functions. Two, Faa1p and Faa4p, are specifically required for fatty acid transport by vectorial acylation. Four ACSLs from the rat were expressed in a yeast faa1delta faa4delta strain and their roles in fatty acid transport and trafficking characterized. All four restored ACS activity yet varied in substrate preference. ACSL1, 4, and 6 were able to rescue fatty acid transport activity and triglyceride synthesis. ACSL5, however, was unable to facilitate fatty acid transport despite conferring robust oleoyl-CoA synthetase activity. This is the first study evaluating the role of the mammalian ACSLs in fatty acid transport and supports a role for ACSL1, 4, and 6 in transport by vectorial acylation.


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RGD Object Information
RGD ID: 2312800
Created: 2009-09-03
Species: All species
Last Modified: 2009-09-03
Status: ACTIVE


RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.