The life of the peroxisome: from birth to death.

The life of the peroxisome: from birth to death.
复制标题

过氧化物酶体的生命:从出生到死亡。

DOI:
10.1016/j.pbi.2014.09.003
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发表时间:
2014
影响因子:
9.5
通讯作者:
Baker A
Baker A
中科院分区:
生物学2区
文献类型:
--
作者:
Baker A

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过氧化物酶体具有新的生物合成功能。植物病毒可能是研究过氧化物酶体从头生物合成的有用工具。过氧化物酶体蛋白可以在过氧化物酶体内降解或输出降解。过氧化物酶体可以通过自噬选择性降解。这些降解途径并行工作,调节过氧化物酶体的功能。过氧化物酶体是动态的、代谢可塑的细胞器。其功能的多样性影响植物发育和生存的许多方面。植物过氧化物酶体的新功能,如生物素,泛醌和叶绿醌的合成正在被发现,它们在产生活性氧(ROS)和活性氮(RNS)作为防御和发展的信号枢纽的作用越来越受到重视。了解过氧化物酶体的生物起源,其蛋白质补充的进口和周转机制,以及特定自噬过程对细胞器的大规模破坏,为植物调节过氧化物酶体功能以应对不断变化的需求提供了新的见解。
HighlightsNew biosynthetic functions for peroxisomes have been discovered.Plant viruses may be useful tools in studying de novo peroxisome biogenesis.Peroxisome proteins may be degraded within peroxisomes or exported for degradation.Peroxisomes can be selectively degraded by autophagy.These degradation pathways work in parallel to adjust peroxisome function.Peroxisomes are dynamic and metabolically plastic organelles. Their multiplicity of functions impacts on many aspects of plant development and survival. New functions for plant peroxisomes such as in the synthesis of biotin, ubiquinone and phylloquinone are being uncovered and their role in generating reactive oxygen species (ROS) and reactive nitrogen species (RNS) as signalling hubs in defence and development is becoming appreciated. Understanding of the biogenesis of peroxisomes, mechanisms of import and turnover of their protein complement, and the wholesale destruction of the organelle by specific autophagic processes is giving new insight into the ways that plants can adjust peroxisome function in response to changing needs.
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