کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1997441 1065579 2009 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cdk1/Cdc28-Dependent Activation of the Major Triacylglycerol Lipase Tgl4 in Yeast Links Lipolysis to Cell-Cycle Progression
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Cdk1/Cdc28-Dependent Activation of the Major Triacylglycerol Lipase Tgl4 in Yeast Links Lipolysis to Cell-Cycle Progression
چکیده انگلیسی

SummaryTriacylglycerols (TGs) serve essential cellular functions as reservoirs for energy substrates (fatty acids) and membrane lipid precursors (diacylglycerols and fatty acids). Here we show that the major yeast TG lipase Tgl4, the functional ortholog of murine adipose TG lipase ATGL, is phosphorylated and activated by cyclin-dependent kinase 1 (Cdk1/Cdc28). Phospho-Tgl4-catalyzed lipolysis contributes to early bud formation in late G1 phase of the cell cycle. Conversely, lack of lipolysis delays bud formation and cell-cycle progression. In the absence of β-oxidation, lipolysis-derived metabolites are thus required to support cellular growth. TG homeostasis is the only metabolic process identified as yet that is directly regulated by Cdk1/Cdc28-dependent phosphorylation of key anabolic and catabolic enzymes, highlighting the importance of FA storage and mobilization during the cell cycle. Our data provide evidence for a direct link between cell-cycle-regulatory kinases and TG degradation and suggest a general mechanism for coordinating membrane synthesis with cell-cycle progression.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: - Volume 33, Issue 1, 16 January 2009, Pages 53–63
نویسندگان
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