A structural framework for replication origin opening by AAA+ initiation factors.

A structural framework for replication origin opening by AAA+ initiation factors.
复制标题

DOI:
10.1016/j.sbi.2012.11.012
复制
发表时间:
2013-02
影响因子:
6.8
通讯作者:
Berger JM
Berger JM
中科院分区:
生物学2区
文献类型:
--
作者:
Duderstadt KE;Berger JM

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ATP依赖性起始因子帮助加工复制起点并协调复制体组装以控制DNA合成的开始。虽然起始蛋白的特定性质和调节机制在不同的生物体之间可能有很大的差异,但某些核苷酸结合元件和组装模式似乎不仅在细胞生命的三个领域(细菌,古细菌和真核生物)中保留,而且在某些类别的双链DNA病毒中也保留。复制起始蛋白质的结构研究,无论是作为高阶低聚物,并在复杂的同源DNA底物,揭示了如何进化相关的ATP酶折叠可以支持不同模式的大分子组装和功能。起始系统之间的比较研究反过来提供了线索,如何双链起源地区可能会在启动事件中融化。
ATP-dependent initiation factors help process replication origins and coordinate replisome assembly to control the onset of DNA synthesis. Although the specific properties and regulatory mechanisms of initiator proteins can vary greatly between different organisms, certain nucleotide-binding elements and assembly patterns appear preserved not only within the three domains of cellular life (bacteria, archaea, and eukaryotes), but also with certain classes of double-stranded DNA viruses. Structural studies of replication initiation proteins, both as higher-order oligomers and in complex with cognate DNA substrates, are revealing how an evolutionarily-related ATPase fold can support different modes of macromolecular assembly and function. Comparative studies between initiation systems in turn provide clues as to how duplex origin regions may be melted during initiation events.
通过细菌启动器拉伸的DNA促进了复制起源。
DOI: 10.1038/nature10455
发表时间: 2011-10-02
期刊: NATURE
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