کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1927569 | 1536530 | 2006 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Fatty acid transport by vectorial acylation in mammals: Roles played by different isoforms of rat long-chain acyl-CoA synthetases Fatty acid transport by vectorial acylation in mammals: Roles played by different isoforms of rat long-chain acyl-CoA synthetases](/preview/png/1927569.png)
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 β-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 faa1Δ faa4Δ 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.
Journal: Archives of Biochemistry and Biophysics - Volume 447, Issue 1, 1 March 2006, Pages 46–52