کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2787613 | 1154331 | 2011 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Drosophila sbo regulates lifespan through its function in the synthesis of coenzyme Q in vivo
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شناسی تکاملی
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چکیده انگلیسی
CoQ is an essential electron carrier in the mitochondrial respiratory chain of both eukaryotes and prokaryotes. It consists of a benzoquinone head group and a hydrophobic polyisoprenoid tail. The genes (COQ1-9) involved in CoQ biosynthesis have been characterized in yeast. In this study, we generated and molecularly characterized a mutant allele of a novel Drosophila gene, sbo, which encodes a protein that is predicted to catalyze the prenylation of p-hydroxybenzoate with the isoprenoid chain during the process of CoQ synthesis. Expression of sbo in yeast rescues the lethality of âCOQ2 mutant cells, indicating that sbo is a functional homolog of COQ2. HPLC results show that the levels of CoQ9 and CoQ10 were significantly reduced in sbo heterozygous adult flies. Furthermore, the mean lifespans of males and females heterozygous for sbo are extended by 12.5% and 30.8%, respectively. Homozygous sbo animals exhibit reduced activities of the insulin/insulin-like growth factor signaling (IIS) pathway. Taken together, we conclude that sbo is an essential gene for Drosophila development, mutation of which leads to an extension of lifespan most likely by altering endogenous CoQ biosynthesis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Genetics and Genomics - Volume 38, Issue 6, 20 June 2011, Pages 225-234
Journal: Journal of Genetics and Genomics - Volume 38, Issue 6, 20 June 2011, Pages 225-234
نویسندگان
Jiyong Liu, Qinghua Wu, Dianlu He, Tengyu Ma, Li Du, Wen Dui, Xiaoyan Guo, Renjie Jiao,