Enhanced processivity of Dnmt1 by monoubiquitinated histone H3

Yuichi Mishima, Laura Brueckner, Saori Takahashi, Toru Kawakami, Junji Otani, Akira Shinohara, Kohei Takeshita, Ronald Garingalao Garvilles, Mikio Watanabe, Norio Sakai, Hideyuki Takeshima, Charlotte Nachtegael, Atsuya Nishiyama, Makoto Nakanishi, Kyohei Arita, Kinichi Nakashima, Hironobu Hojo, Isao Suetake

研究成果: Contribution to journalArticle査読

2 被引用数 (Scopus)

抄録

DNA methylation controls gene expression, and once established, DNA methylation patterns are faithfully copied during DNA replication by the maintenance DNA methyltransferase Dnmt1. In vivo, Dnmt1 interacts with Uhrf1, which recognizes hemimethylated CpGs. Recently, we reported that Uhrf1-catalyzed K18- and K23-ubiquitinated histone H3 binds to the N-terminal region (the replication focus targeting sequence, RFTS) of Dnmt1 to stimulate its methyltransferase activity. However, it is not yet fully understood how ubiquitinated histone H3 stimulates Dnmt1 activity. Here, we show that monoubiquitinated histone H3 stimulates Dnmt1 activity toward DNA with multiple hemimethylated CpGs but not toward DNA with only a single hemimethylated CpG, suggesting an influence of ubiquitination on the processivity of Dnmt1. The Dnmt1 activity stimulated by monoubiquitinated histone H3 was additively enhanced by the Uhrf1 SRA domain, which also binds to RFTS. Thus, Dnmt1 activity is regulated by catalysis (ubiquitination)-dependent and -independent functions of Uhrf1.

本文言語英語
ページ(範囲)22-32
ページ数11
ジャーナルGenes to Cells
25
1
DOI
出版ステータス出版済み - 1 1 2020
外部発表はい

All Science Journal Classification (ASJC) codes

  • Genetics
  • Cell Biology

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