ATAC is a double histone acetyltransferase complex that stimulates nucleosome sliding

Tamaki Suganuma, José L. Gutiérrez, Bing Li, Laurence Florens, Selene K. Swanson, Michael P. Washburn, Susan M. Abmayr, Jerry L. Workman

Research output: Contribution to journalArticlepeer-review

139 Scopus citations


The Ada2a-containing (ATAC) complex is an essential Drosophila melanogaster histone acetyltransferase (HAT) complex that contains the transcriptional cofactors Gcn5 (KAT2), Ada3, Ada2a, Atac1 and Hcf. We have analyzed the complex by MudPIT (multidimensional protein identification technology) and found eight previously unidentified subunits. These include the WD40 repeat protein WDS, the PHD and HAT domain protein CG10414 (herein renamed Atac2/KAT14), the YEATS family member D12, the histone fold proteins CHRAC14 and NC2β, CG30390, CG32343 (Atac3) and CG10238. The presence of CG10414 (Atac2) suggests that it acts as a second acetyltransferase enzyme in ATAC in addition to Gcn5. Indeed, recombinant Atac2 displays HAT activity in vitro with a preference for acetylating histone H4, and mutation of Atac2 abrogated H4 lysine 16 acetylation in D. melanogaster embryos. Furthermore, although ATAC does not show nucleosome-remodeling activity itself, it stimulates nucleosome sliding by the ISWI, SWI-SNF and RSC complexes.

Original languageEnglish (US)
Pages (from-to)364-372
Number of pages9
JournalNature Structural and Molecular Biology
Issue number4
StatePublished - Apr 2008

ASJC Scopus subject areas

  • Structural Biology
  • Molecular Biology


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