ANP32E is a histone chaperone that removes H2A.Z from chromatin

Arnaud Obri, Khalid Ouararhni, Christophe Papin, Marie-Laure Diebold, Kiran Padmanabhan, Martin Marek, Isabelle Stoll, Ludovic Roy, Patrick T. Reilly, Tak W. Mak, Stefan Dimitrov (), Christophe Romier () and Ali Hamiche ()
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Arnaud Obri: Institut de Génétique et Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg, CNRS, INSERM, 1 rue Laurent Fries, B.P. 10142, 67404 Illkirch Cedex, France
Khalid Ouararhni: Institut de Génétique et Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg, CNRS, INSERM, 1 rue Laurent Fries, B.P. 10142, 67404 Illkirch Cedex, France
Christophe Papin: Institut de Génétique et Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg, CNRS, INSERM, 1 rue Laurent Fries, B.P. 10142, 67404 Illkirch Cedex, France
Marie-Laure Diebold: Institut de Génétique et Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg, CNRS, INSERM, 1 rue Laurent Fries, B.P. 10142, 67404 Illkirch Cedex, France
Kiran Padmanabhan: Equipe labélisée Ligue contre le Cancer, INSERM/Université Joseph Fourier , Institut Albert Bonniot, U823, Site Santé-BP 170, 38042 Grenoble Cedex 9, France
Martin Marek: Institut de Génétique et Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg, CNRS, INSERM, 1 rue Laurent Fries, B.P. 10142, 67404 Illkirch Cedex, France
Isabelle Stoll: Institut de Génétique et Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg, CNRS, INSERM, 1 rue Laurent Fries, B.P. 10142, 67404 Illkirch Cedex, France
Ludovic Roy: Institut de Génétique et Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg, CNRS, INSERM, 1 rue Laurent Fries, B.P. 10142, 67404 Illkirch Cedex, France
Patrick T. Reilly: Laboratory of Inflammation Biology, National Cancer Centre
Tak W. Mak: Laboratory of Inflammation Biology, National Cancer Centre
Stefan Dimitrov: Equipe labélisée Ligue contre le Cancer, INSERM/Université Joseph Fourier , Institut Albert Bonniot, U823, Site Santé-BP 170, 38042 Grenoble Cedex 9, France
Christophe Romier: Institut de Génétique et Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg, CNRS, INSERM, 1 rue Laurent Fries, B.P. 10142, 67404 Illkirch Cedex, France
Ali Hamiche: Institut de Génétique et Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg, CNRS, INSERM, 1 rue Laurent Fries, B.P. 10142, 67404 Illkirch Cedex, France

Nature, 2014, vol. 505, issue 7485, 648-653

Abstract: Abstract H2A.Z is an essential histone variant implicated in the regulation of key nuclear events. However, the metazoan chaperones responsible for H2A.Z deposition and its removal from chromatin remain unknown. Here we report the identification and characterization of the human protein ANP32E as a specific H2A.Z chaperone. We show that ANP32E is a member of the presumed H2A.Z histone-exchange complex p400/TIP60. ANP32E interacts with a short region of the docking domain of H2A.Z through a new motif termed H2A.Z interacting domain (ZID). The 1.48 Å resolution crystal structure of the complex formed between the ANP32E-ZID and the H2A.Z/H2B dimer and biochemical data support an underlying molecular mechanism for H2A.Z/H2B eviction from the nucleosome and its stabilization by ANP32E through a specific extension of the H2A.Z carboxy-terminal α-helix. Finally, analysis of H2A.Z localization in ANP32E−/− cells by chromatin immunoprecipitation followed by sequencing shows genome-wide enrichment, redistribution and accumulation of H2A.Z at specific chromatin control regions, in particular at enhancers and insulators.

Date: 2014
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DOI: 10.1038/nature12922

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