The cell cycle regulator p27Kip1interacts with MCM7, a DNA replication licensing factor, to inhibit initiation of DNA replication
نویسندگان
چکیده
منابع مشابه
Regulation of MCM7 DNA Replication Licensing Activity
Miniature chromosome maintenance (MCM) proteins were initially identified from autonomously replicating sequence in Saccharomyces cerevisiae. Mutations of some of these proteins such as MCM7 or MCM3 in yeast result in loss of the large chunk of yeast chromosomes. MCM7 cDNA encodes a 543-amino acid protein and is ubiquitously expressed in all tissues. Initiation of DNA replication is a complex p...
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Loss or dysfunction of tumor suppressor retinoblastoma (RB) is a common feature in various tumors, and contributes to cancer cell stemness and drug resistance to cancer therapy. However, the strategy to suppress or eliminate Rb-deficient tumor cells remains unclear. In the present study, we accidentally found that reduction of DNA replication licensing factor MCM7 induced more apoptosis in RB-d...
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Xenopus egg extracts treated with the protein kinase inhibitor 6-dimethylaminopurine (6-DMAP) are unable to support the initiation of DNA replication. Nuclei assembled in 6-DMAP extracts behave as though they are in G2, and will not undergo another round of DNA replication until passage through mitosis. 6-DMAP extracts are functionally devoid of a replication factor that modifies chromatin in e...
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The replication of the genome of a eukaryotic cell is a tightly regulated process. Firstly, replication is coordinated with general macromolecular synthesis, so that the DNA-to-protein ratio is maintained within a relatively narrow range. This involves a mechanism that couples the initiation of DNA replication to the achievement of a critical cell size. Secondly, replication generates exactly t...
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The convergence point of growth regulatory pathways that control cell proliferation is the initiation of genome replication, the core of which is the assembly of pre-replicative complexes resulting in chromatin being "licensed" for DNA replication in the subsequent S phase. We have analysed regulation of the pre-replicative complex proteins ORC, Cdc6, and MCM in cycling and non-proliferating qu...
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ژورنال
عنوان ژورنال: FEBS Letters
سال: 2005
ISSN: 0014-5793
DOI: 10.1016/j.febslet.2005.10.028