Mcm10 and Cdc45 cooperate in origin activation in Saccharomyces cerevisiae.

Mcm10 and Cdc45 cooperate in origin activation in Saccharomyces cerevisiae.
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Mcm10 和 Cdc45 在酿酒酵母的起源激活中合作。

DOI:
10.1016/j.jmb.2004.04.066
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发表时间:
2004
影响因子:
5.6
通讯作者:
Tye,BikK
Tye,BikK
中科院分区:
生物学2区
文献类型:
--
作者:
Sawyer,SaraL;Cheng,IreneH;Chai,Weihang;Tye,BikK

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最近发现Mcm 10在真核生物DNA复制起始过程的多个步骤中起着至关重要的作用。在这里,我们已经研究了Mcm 10在组装起始因子在一个良好的特征酵母复制起点,ARS 1的作用。我们发现,前复制复合物(前RC)组件Cdc 6和Mcm 7与ARS 1在mcm 10 -1突变体,这表明建立前RC是不妥协的突变体。在mcm 10 -1突变体中,Cdc 45与ARS 1的关联减少,表明Mcm 10参与了将Cdc 45招募到前RC。我们发现,过度表达的Mcm 10 -1或Cdc 45抑制生长缺陷的mcm 10 -1,和Cdc 45和Mcm 10之间的物理相互作用被破坏的mcm 10 -1突变体。我们的研究结果表明,Mcm 10和Cdc 45蛋白之间的相互作用,促进招聘的Cdc 45到ARS 1的起源。
Mcm10 has recently been found to play a crucial role in multiple steps of the DNA replication initiation process in eukaryotes. Here, we have examined the role of Mcm10 in assembling initiation factors at a well-characterized yeast replication origin, ARS1. We find that the pre-replication complex (pre-RC) components Cdc6 and Mcm7 associate with ARS1 in the mcm10-1 mutant, suggesting that establishment of the pre-RC is not compromised in this mutant. Association of Cdc45 with ARS1 is reduced in the mcm10-1 mutant, suggesting that Mcm10 is involved in recruiting Cdc45 to the pre-RC. We find that overexpression of either Mcm10-1 or Cdc45 suppresses the growth defect of mcm10-1, and that a physical interaction between Cdc45 and Mcm10 is disrupted in the mcm10-1 mutant. Our results show that interaction between the Mcm10 and Cdc45 proteins facilitates the recruitment of Cdc45 onto the ARS1 origin.
河豚毒素可阻止金鱼眼优势柱的形成。
DOI: --
发表时间: 1982
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