TY - JOUR A1 - Hu, Gangqing A1 - Schones, Dustin E. A1 - Cui, Kairong A1 - Ybarra, River A1 - Northrup, Daniel A1 - Tang, Qingsong A1 - Gattinoni, Luca A1 - Restifo, Nicholas P. A1 - Huang, Suming A1 - Zhao, Keji T1 - Regulation of nucleosome landscape and transcription factor targeting at tissue-specific enhancers by BRG1 Y1 - 2011/10/01 JF - Genome Research JO - Genome Research SP - 1650 EP - 1658 DO - 10.1101/gr.121145.111 VL - 21 IS - 10 UR - http://genome.cshlp.org/content/21/10/1650.abstract N2 - Enhancers of transcription activate transcription via binding of sequence-specific transcription factors to their target sites in chromatin. In this report, we identify GATA1-bound distal sites genome-wide and find a global reorganization of the nucleosomes at these potential enhancers during differentiation of hematopoietic stem cells (HSCs) to erythrocytes. We show that the catalytic subunit BRG1 of BAF complexes localizes to these distal sites during differentiation and generates a longer nucleosome linker region surrounding the GATA1 sites by shifting the flanking nucleosomes away. Intriguingly, we find that the nucleosome shifting specifically facilitates binding of TAL1 but not GATA1 and is linked to subsequent transcriptional regulation of target genes. ER -