3MWY

Crystal structure of the chromodomain-ATPase portion of the yeast Chd1 chromatin remodeler

3MWY の概要

• エントリーDOI: 10.2210/pdb3mwy/pdb
• 関連するPDBエントリー: 1Z3I 1Z63 2B2W 2DB3 2H1E 3DMQ
• 分子名称: Chromo domain-containing protein 1, PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER (2 entities in total)
• 機能のキーワード: swi2/snf2 atpase, double chromodomains, hydrolase
• 由来する生物種: Saccharomyces cerevisiae (brewer's yeast,lager beer yeast,yeast)
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 92966.50

構造登録者

Hauk, G.,Bowman, G.D. (登録日: 2010-05-06, 公開日: 2010-09-29, 最終更新日: 2023-09-06)

主引用文献

Hauk, G.,McKnight, J.N.,Nodelman, I.M.,Bowman, G.D.
The chromodomains of the Chd1 chromatin remodeler regulate DNA access to the ATPase motor.
Mol.Cell, 39:711-723, 2010

PubMed Abstract: Chromatin remodelers are ATP-driven machines that assemble, slide, and remove nucleosomes from DNA, but how the ATPase motors of remodelers are regulated is poorly understood. Here we show that the double chromodomain unit of the Chd1 remodeler blocks DNA binding and activation of the ATPase motor in the absence of nucleosome substrates. The Chd1 crystal structure reveals that an acidic helix joining the chromodomains can pack against a DNA-binding surface of the ATPase motor. Disruption of the chromodomain-ATPase interface prevents discrimination between nucleosomes and naked DNA and reduces the reliance on the histone H4 tail for nucleosome sliding. We propose that the chromodomains allow Chd1 to distinguish between nucleosomes and naked DNA by physically gating access to the ATPase motor, and we hypothesize that related ATPase motors may employ a similar strategy to discriminate among DNA-containing substrates.

PubMed: 20832723
DOI: 10.1016/j.molcel.2010.08.012

実験手法

X-RAY DIFFRACTION (3.7 Å)