Correlation Engine 2.0
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  • cdc2 protein (2)
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    The cyclin-dependent kinase 1 (Cdk1) drives cell division. To uncover additional functions of Cdk1, we generated knockin mice expressing an analog-sensitive version of Cdk1 in place of wild-type Cdk1. In our study, we focused on embryonic stem cells (ESCs), because this cell type displays particularly high Cdk1 activity. We found that in ESCs, a large fraction of Cdk1 substrates is localized on chromatin. Cdk1 phosphorylates many proteins involved in epigenetic regulation, including writers and erasers of all major histone marks. Consistent with these findings, inhibition of Cdk1 altered histone-modification status of ESCs. High levels of Cdk1 in ESCs phosphorylate and partially inactivate Dot1l, the H3K79 methyltransferase responsible for placing activating marks on gene bodies. Decrease of Cdk1 activity during ESC differentiation de-represses Dot1l, thereby allowing coordinated expression of differentiation genes. These analyses indicate that Cdk1 functions to maintain the epigenetic identity of ESCs. Copyright © 2020 Elsevier Inc. All rights reserved.


    Wojciech Michowski, Joel M Chick, Chen Chu, Aleksandra Kolodziejczyk, Yichen Wang, Jan M Suski, Brian Abraham, Lars Anders, Daniel Day, Lukas M Dunkl, Mitchell Li Cheong Man, Tian Zhang, Phatthamon Laphanuwat, Nickolas A Bacon, Lijun Liu, Anne Fassl, Samanta Sharma, Tobias Otto, Emanuelle Jecrois, Richard Han, Katharine E Sweeney, Samuele Marro, Marius Wernig, Yan Geng, Alan Moses, Cheng Li, Steven P Gygi, Richard A Young, Piotr Sicinski. Cdk1 Controls Global Epigenetic Landscape in Embryonic Stem Cells. Molecular cell. 2020 May 07;78(3):459-476.e13

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    PMID: 32240602

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