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Regulation of muscle development by DPF3, a novel histone acetylation and methylation reader of the BAF chromatin remodeling complex

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Item Type:Article
Title:Regulation of muscle development by DPF3, a novel histone acetylation and methylation reader of the BAF chromatin remodeling complex
Creators Name:Lange, M. and Kaynak, B. and Foerster, U.B. and Toenjes, M. and Fischer, J.J. and Grimm, C. and Schlesinger, J. and Just, S. and Dunkel, I. and Krueger, T. and Mebus, S. and Lehrach, H. and Lurz, R. and Gobom, J. and Rottbauer, W. and Abdelilah-Seyfried, S. and Sperling, S.
Abstract:Chromatin remodeling and histone modifications facilitate access of transcription factors to DNA by promoting the unwinding and destabilization of histone–DNA interactions. We present DPF3, a new epigenetic key factor for heart and muscle development characterized by a double PHD finger. DPF3 is associated with the BAF chromatin remodeling complex and binds methylated and acetylated lysine residues of histone 3 and 4. Thus, DPF3 may represent the first plant homeodomains that bind acetylated lysines, a feature previously only shown for the bromodomain. During development Dpf3 is expressed in the heart and somites of mouse, chicken, and zebrafish. Morpholino knockdown of dpf3 in zebrafish leads to incomplete cardiac looping and severely reduced ventricular contractility, with disassembled muscular fibers caused by transcriptional deregulation of structural and regulatory proteins. Promoter analysis identified Dpf3 as a novel downstream target of Mef2a. Taken together, DPF3 adds a further layer of complexity to the BAF complex by representing a tissue-specific anchor between histone acetylations as well as methylations and chromatin remodeling. Furthermore, this shows that plant homeodomain proteins play a yet unexplored role in recruiting chromatin remodeling complexes to acetylated histones.
Keywords:Heart and Skeletal Muscle Development and Function, PHD Finger, BAF Chromatin Remodeling Complex, SMARCD3–BAF60, Acetylated and Methylated Histones, Mef2, Acetylation, Amino Acid Sequence, Chromatin Assembly and Disassembly, DNA-Binding Proteins, Genetic Epigenesis, Heart, Histones, Methylation, Molecular Sequence Data, Muscle Development, Myocardium, Transcription Factors, Animals, Chick Embryo, Mice, Zebrafish
Source:Genes & Development
ISSN:0890-9369
Publisher:Cold Spring Harbor Laboratory Press (U.S.A.)
Volume:22
Number:17
Page Range:2370-2384
Date:1 September 2008
Official Publication:https://doi.org/10.1101/gad.471408
PubMed:View item in PubMed

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