+検索条件
-Structure paper
| タイトル | A competitive regulatory mechanism of the Chd1 remodeler is integral to distorting nucleosomal DNA. |
|---|---|
| ジャーナル・号・ページ | Nat Struct Mol Biol, Vol. 32, Issue 8, Page 1445-1455, Year 2025 |
| 掲載日 | 2025年5月28日 |
著者 | Ilana M Nodelman / Heather J Folkwein / Wesley S Glime / Jean-Paul Armache / Gregory D Bowman / ![]() |
| PubMed 要旨 | The Chd1 chromatin remodeler repositions nucleosomes into evenly spaced arrays, a characteristic of most eukaryotic genes. Here we show that the yeast Chd1 remodeler requires two activating segments ...The Chd1 chromatin remodeler repositions nucleosomes into evenly spaced arrays, a characteristic of most eukaryotic genes. Here we show that the yeast Chd1 remodeler requires two activating segments to distort nucleosomal DNA into an A-form-like conformation, a critical first step in nucleosome sliding. As shown by cryo-electron microscopy, these two activating segments together pack against the ATPase motor, where they are poised to stabilize the central ATPase cleft. These activating elements contact the ATPase at locations that are incompatible with binding of NegC, an autoinhibitory segment located between the two activators. NegC inhibits sliding by antagonizing the activators through steric competition and constraining activator placement, giving rise to directional nucleosome sliding. Given that activator reinforcement of the ATPase cleft is needed for DNA distortion, this first step in remodeling appears to provide a natural checkpoint for regulation of chromatin remodeler activity. |
リンク | Nat Struct Mol Biol / PubMed:40437259 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 2.37 - 2.9 Å |
| 構造データ | ![]() EMDB-49060: 2.37 A S.cerevisiae Chd1[L886G/L889G/L891G]-nucleosome reconstructruction. Combined 1:1 and 2:1 complexes EMDB-49061, PDB-9n6h: EMDB-49062, PDB-9n6i: EMDB-49063, PDB-9n6k: ![]() EMDB-49064: 2.90 A S.cerevisiae Chd1[L886G/L889G/L891G]-nucleosome 2:1 complex with C-terminal activator helix around residue 945 |
| 由来 |
|
キーワード | DNA BINDING PROTEIN/DNA / chromatin / CHD1 / remodeler / ATP-dependent chromatin remodeler / DNA BINDING PROTEIN / DNA BINDING PROTEIN-DNA complex |
ムービー
コントローラー
構造ビューア
万見文献について



著者
リンク








キーワード