The circadian clock of Neurospora crassa.

The circadian clock of Neurospora crassa.
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DOI:
10.1111/j.1574-6976.2011.00288.x
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发表时间:
2012-01
影响因子:
11.3
通讯作者:
Dunlap JC
Dunlap JC
中科院分区:
生物学1区
文献类型:
--
作者:
Baker CL;Loros JJ;Dunlap JC

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生物钟根据外部世界组织我们的内部生理机能,为生命提供预测的能力,从而更好地为环境的重大波动做好准备。除了古细菌外,昼夜节律系统在几乎所有主要的生命分支中都有广泛的代表,而在真核生物中,丝状真菌粗神经孢子菌作为揭示基本昼夜节律生理学和分子生物学的持久模式生物已经服务了近半个世纪。利用神经孢子菌的研究阐明了我们对生物钟的基本理解,即通过转录和转录后过程调节的嵌套的正反馈和负反馈循环。这些反馈回路集中在形成分子复合物的有限数量的蛋白质上,它们的调节为几乎所有的时钟特性提供了物理解释。本文将介绍昼夜节律的基本原理、模式丝状真菌粗神经孢子菌,并对生物钟的分子组成和调控进行综述。
Circadian clocks organize our inner physiology with respect to the external world providing life with the ability to anticipate and thereby better prepare for major fluctuations in its environment. Circadian systems are widely represented in nearly all major branches of life except archaebacteria, and within the eukaryotes the filamentous fungus Neurospora crassa has served for nearly half a century as a durable model organism for uncovering the basic circadian physiology and molecular biology. Studies using Neurospora have clarified our fundamental understanding of the clock as nested positive and negative feedback loops regulated through transcriptional and post-transcriptional processes. These feedback loops are centered on a limited number of proteins that form molecular complexes, and their regulation provides a physical explanation for nearly all clock properties. This review will introduce the basics of circadian rhythms, the model filamentous fungus Neurospora crassa, and provide an overview of the molecular components and regulation of the circadian clock.
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