Chromatin methylation activity of Dnmt3a and Dnmt3a/3L is guided by interaction of the ADD domain with the histone H3 tail

Yingying Zhang, Renata Jurkowska, Szabolcs Soeroes, Arumugam Rajavelu, Arunkumar Dhayalan, Ina Bock, Philipp Rathert, Ole Brandt, Richard Reinhardt, Wolfgang Fischle, Albert Jeltsch*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

229 Scopus citations

Abstract

Using peptide arrays and binding to native histone proteins, we show that the ADD domain of Dnmt3a specifically interacts with the H3 histone 1-19 tail. Binding is disrupted by di- and trimethylation of K4, phosphorylation of T3, S10 or T11 and acetylation of K4. We did not observe binding to the H4 1-19 tail. The ADD domain of Dnmt3b shows the same binding specificity, suggesting that the distinct bio- logical functions of both enzymes are not related to their ADD domains. To establish a functional role of the ADD domain binding to unmodified H3 tails, we analyzed the DNA methylation of in vitro reconstituted chromatin with Dnmt3a2, the Dnmt3a2/Dnmt3L complex, and the catalytic domain of Dnmt3a. All Dnmt3a complexes preferentially methylated linker DNA regions. Chromatin substrates with unmodified H3 tail or with H3K9me3 modification were methylated more efficiently by full-length Dnmt3a and full-length Dnmt3a/3L complexes than chromatin trimethylated at H3K4. In contrast, the catalytic domain of Dnmt3a was not affected by the H3K4me3 modification. These results demonstrate that the binding of the ADD domain to H3 tails unmethylated at K4 leads to the preferential methylation of DNA bound to chromatin with this modification state. Our in vitro results recapitulate DNA methylation patterns observed in genome-wide DNA methylation studies.

Original languageEnglish (US)
Article numbergkq147
Pages (from-to)4246-4253
Number of pages8
JournalNucleic acids research
Volume38
Issue number13
DOIs
StatePublished - Mar 11 2010

ASJC Scopus subject areas

  • Genetics

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