Molecular traffic jams on DNA.

Molecular traffic jams on DNA.
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DOI:
10.1146/annurev-biophys-083012-130304
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发表时间:
2013
影响因子:
12.4
通讯作者:
Greene EC
Greene EC
中科院分区:
生物学1区
文献类型:
--
作者:
Finkelstein IJ;Greene EC

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DNA代谢的各个方面--包括转录、复制和修复--都涉及沿着基因组DNA移动的动力酶。这些过程都必须发生在被大量其他蛋白质占据的染色体上。然而,关于核酸马达蛋白如何沿着可能存在于生理环境中的拥挤的DNA底物沿着移动的知之甚少。本文综述了最近的进展,了解如何DNA结合马达蛋白响应的存在下,其他蛋白质,在于他们的路径。我们强调最近的单分子生物物理实验,旨在解决这个问题,重点放在分析单分子,合奏生化,并在体内的数据从机械的角度来看。
All aspects of DNA metabolism—including transcription, replication, and repair—involve motor enzymes that move along genomic DNA. These processes must all take place on chromosomes that are occupied by a large number of other proteins. However, very little is known regarding how nucleic acid motor proteins move along the crowded DNA substrates that are likely to exist in physiological settings. This review summarizes recent progress in understanding how DNA-binding motor proteins respond to the presence of other proteins that lie in their paths. We highlight recent single-molecule biophysical experiments aimed at addressing this question, with an emphasis placed on analyzing the single-molecule, ensemble biochemical, and in vivo data from a mechanistic perspective.
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