CRL4(VprBP) E3 ligase promotes monoubiquitylation and chromatin binding of TET dioxygenases.
CRL4(VprBP) E3 ligase promotes monoubiquitylation and chromatin binding of TET dioxygenases.
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DOI:
10.1016/j.molcel.2014.12.002
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发表时间:
2015-01-22
期刊:
影响因子:
16
通讯作者:
Xiong, Yue
中科院分区:
文献类型:
--
作者:
Nakagawa, Tadashi;Lv, Lei;Nakagawa, Makiko;Yu, Yanbao;Yu, Chao;D'Alessio, Ana C.;Nakayama, Keiko;Fan, Heng-Yu;Chen, Xian;Xiong, Yue
DNA methylation at the C-5 position of cytosine (5mC) regulates gene expression and plays pivotal roles in various biological processes. The TET dioxygenases iterative oxidation of 5mC, leading to eventual demethylation intermediate. Inactivation of TET enzymes causes multi-stage developmental defects, impaired cell reprogramming and hematopoietic malignancies. However, little is known about how TET activity is regulated. Here we show that all three TET proteins bind to VprBP and are monoubiquitylated by the VprBP-DDB1-CUL4-ROC1 E3 ubiquitin ligase (CRL4VprBP) on a highly conserved lysine residue. Deletion of VprBP in oocytes abrogated paternal DNA hydroxymethylation in zygotes. VprBP-mediated monoubiquitylation promotes TET binding to chromatin. Multiple recurrent TET2-inactivating mutations derived from leukemia target either the monoubiquitylation site (K1299) or residues essential for VprBP binding. Cumulatively, our data demonstrate that CRL4VprBP is a critical regulator of TET dioxygenases during development and in tumor suppression.
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Nakagawa T;Mondal K;Swanson PC
通讯作者:
Swanson PC
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通讯作者:
Xiong, Yue
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Xiong, Yue