A Barcode Screen for Epigenetic Regulators Reveals a Role for the NuB4/HAT-B Histone Acetyltransferase Complex in Histone Turnover | Zendy

Kitty F. Verzijlbergen | Zendy; Tibor van Welsem | Zendy; Daoud Sie | Zendy; Tineke L. Lenstra | Zendy; Daniel J. Turner | Zendy; Frank C. P. Holstege | Zendy; Ron Kerkhoven | Zendy; Fred van Leeuwen | Zendy

Open Access

A Barcode Screen for Epigenetic Regulators Reveals a Role for the NuB4/HAT-B Histone Acetyltransferase Complex in Histone Turnover

Author(s) -

Kitty F. Verzijlbergen,

Tibor van Welsem,

Daoud Sie,

Tineke L. Lenstra,

Daniel J. Turner,

Frank C. P. Holstege,

Ron Kerkhoven,

Fred van Leeuwen

Publication year - 2011

Publication title -

plos genetics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.587

H-Index - 233

eISSN - 1553-7404

pISSN - 1553-7390

DOI - 10.1371/journal.pgen.1002284

Subject(s) - biology , histone code , histone methyltransferase , histone h2a , histone acetyltransferase , histone , epigenomics , chromatin , chromatin remodeling , genetics , chromatin immunoprecipitation , histone h1 , epigenetics , histone methylation , histone acetyltransferases , microbiology and biotechnology , nucleosome , gene expression , gene , dna methylation , promoter

Dynamic modification of histone proteins plays a key role in regulating gene expression. However, histones themselves can also be dynamic, which potentially affects the stability of histone modifications. To determine the molecular mechanisms of histone turnover, we developed a parallel screening method for epigenetic regulators by analyzing chromatin states on DNA barcodes. Histone turnover was quantified by employing a genetic pulse-chase technique called RITE, which was combined with chromatin immunoprecipitation and high-throughput sequencing. In this screen, the NuB4/HAT-B complex, containing the conserved type B histone acetyltransferase Hat1, was found to promote histone turnover. Unexpectedly, the three members of this complex could be functionally separated from each other as well as from the known interacting factor and histone chaperone Asf1. Thus, systematic and direct interrogation of chromatin structure on DNA barcodes can lead to the discovery of genes and pathways involved in chromatin modification and dynamics.

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