From structure to mechanism-understanding initiation of DNA replication.

From structure to mechanism-understanding initiation of DNA replication.
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DOI:
10.1101/gad.298232.117
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发表时间:
2017-06-01
影响因子:
10.5
通讯作者:
Speck C
Speck C
中科院分区:
生物学1区
文献类型:
--
作者:
Riera A;Barbon M;Noguchi Y;Reuter LM;Schneider S;Speck C

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在这篇综述中,Riera等人回顾了最近的结构和生物化学见解,这些见解开始解释特定蛋白质如何识别DNA复制起点,加载DNA上的复制解旋酶,解开DNA,合成新的DNA链,并重新组装染色质。DNA复制导致细胞分裂前基因组加倍。这个过程需要将50个或更多的蛋白质因子组装成一个复制叉。在这里,我们回顾了最近的结构和生物化学的见解,开始解释特定的蛋白质如何识别DNA复制起点,加载DNA上的复制解旋酶,解开DNA,合成新的DNA链,并重新组装染色质。我们专注于微小染色体维持(MCM 2 -7)蛋白,它形成了真核生物复制叉的核心,因为这种复合物经历了主要的结构重排,以与DNA,调节其DNA解旋活性,并保持基因组稳定性。
In this Review, Riera et al. review recent structural and biochemical insights that start to explain how specific proteins recognize DNA replication origins, load the replicative helicase on DNA, unwind DNA, synthesize new DNA strands, and reassemble chromatin. DNA replication results in the doubling of the genome prior to cell division. This process requires the assembly of 50 or more protein factors into a replication fork. Here, we review recent structural and biochemical insights that start to explain how specific proteins recognize DNA replication origins, load the replicative helicase on DNA, unwind DNA, synthesize new DNA strands, and reassemble chromatin. We focus on the minichromosome maintenance (MCM2–7) proteins, which form the core of the eukaryotic replication fork, as this complex undergoes major structural rearrangements in order to engage with DNA, regulate its DNA-unwinding activity, and maintain genome stability.
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