An inventory of peroxisomal proteins and pathways in Drosophila melanogaster.

An inventory of peroxisomal proteins and pathways in Drosophila melanogaster.
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DOI:
10.1111/j.1600-0854.2012.01393.x
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发表时间:
2012-10
期刊:
Traffic (Copenhagen, Denmark)
影响因子:
--
通讯作者:
McNew JA
McNew JA
中科院分区:
其他
文献类型:
--
作者:
Faust JE;Verma A;Peng C;McNew JA

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过氧化物酶体是一种普遍存在的细胞器,具有多种重要的生物化学途径。过氧化物酶体功能障碍导致一系列人类疾病,称为过氧化物酶体生物发生障碍(PBD)。虽然关于过氧化物酶体生物发生的机制已经知道很多,但仍然不清楚过氧化物酶体功能障碍如何导致疾病状态。最近的几项研究表明,果蝇peroxin基因突变导致的表型与人类PBD相似,这表明果蝇可能是一个有用的系统来模拟PBD。我们已经分析了果蝇的蛋白质组,以确定蛋白质参与过氧化物酶体的生物发生和稳态,以及代谢酶的细胞器内的功能。这些预测的过氧化物酶体蛋白的亚细胞定位得到证实。类似于C。果蝇似乎仅利用过氧化物酶体靶向信号(PTS)1型系统用于基质蛋白输入。这项工作将进一步加深我们对果蝇过氧化物酶体的理解,并增加这一新兴模型系统的实用性。
Peroxisomes are ubiquitous organelles housing a variety of essential biochemical pathways. Peroxisome dysfunction causes a spectrum of human diseases known as peroxisome biogenesis disorders (PBD). While much is known regarding the mechanism of peroxisome biogenesis, it is still unclear how peroxisome dysfunction leads to the disease state. Several recent studies have shown that mutations in Drosophila peroxin genes cause phenotypes similar to those seen in humans with PBDs suggesting that Drosophila might be a useful system to model PBDs. We have analyzed the proteome of Drosophila to identify the proteins involved in peroxisomal biogenesis and homeostasis as well as metabolic enzymes that function within the organelle. The subcellular localization of five of these predicted peroxisomal proteins was confirmed. Similar to C. elegans, Drosophila appears to only utilize the peroxisome targeting signal (PTS) type 1 system for matrix protein import. This work will further our understanding of peroxisomes in Drosophila and add to the usefulness of this emerging model system.
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