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-Structure paper
| タイトル | Structural insights into chromatin remodeling by ISWI during active ATP hydrolysis. |
|---|---|
| ジャーナル・号・ページ | Science, Vol. 388, Issue 6751, Page eadu5654, Year 2025 |
| 掲載日 | 2025年6月5日 |
著者 | Youyang Sia / Han Pan / Kangjing Chen / Zhucheng Chen / ![]() |
| PubMed 要旨 | Chromatin remodelers utilize the energy of adenosine triphosphate (ATP) hydrolysis to slide nucleosomes, regulating chromatin structure and gene activity in cells. In this work, we report structures ...Chromatin remodelers utilize the energy of adenosine triphosphate (ATP) hydrolysis to slide nucleosomes, regulating chromatin structure and gene activity in cells. In this work, we report structures of imitation switch (ISWI) bound to the nucleosome during active ATP hydrolysis and remodeling, revealing conformational transitions of the remodeling motor across the adenosine triphosphatase (ATPase) cycle. The DNA strands were distorted accordingly, showing one full base-pair bulge and a loss of histone contact at the site of motor binding in the adenosine diphosphate* (ADP*) and apo* (unbound) states. We also identified several important elements for regulation of the remodeling activity. Notably, an enzyme conformation exiting the remodeling cycle reveals a linker DNA-sensing brake mechanism. Together, our findings elucidate a multistate model of ISWI action, providing a comprehensive mechanism of DNA translocation and regulation underpinning chromatin remodeling. |
リンク | Science / PubMed:40179160 |
| 手法 | EM (単粒子) |
| 解像度 | 2.3 - 3.3 Å |
| 構造データ | EMDB-61624, PDB-9jnp: EMDB-61626, PDB-9jnt: EMDB-61627, PDB-9jnu: EMDB-61628, PDB-9jnv: EMDB-61629, PDB-9jnw: EMDB-61630, PDB-9jnx: EMDB-61632, PDB-9jnz: EMDB-61641, PDB-9jo2: EMDB-61644, PDB-9jo5: ![]() EMDB-61647: structure of nucleosome in ATP state ![]() EMDB-61649: structure of nucleosome in ADP state ![]() EMDB-61650: structure of nucleosome in ADP* state ![]() EMDB-61651: Structure of nucleosome in ADP-S state ![]() EMDB-61652: structure of nucleosome in ADP+ state ![]() EMDB-61653: structure of nucleosome in ADP*+ state ![]() EMDB-61654: structure of nucleosome in Apo state ![]() EMDB-61655: structure of nucleosome in Apo* state ![]() EMDB-61657: structure of isw1-motor in ATP state ![]() EMDB-61658: structure of isw1-motor in ADP state ![]() EMDB-61660: Structure of isw1-motor in ADP-S state ![]() EMDB-61661: structure of isw1-motor in ADP* state ![]() EMDB-61662: structure of isw1-motor in ADP+ state ![]() EMDB-61663: structure of isw1-motor in ADP*+ state ![]() EMDB-61665: strcuture of isw1-motor in Apo state ![]() EMDB-61667: structure of isw1-motor in Apo* state ![]() EMDB-61669: Structure of isw1-motor in ADP-B state ![]() EMDB-61671: Structure of isw1-lobe2 in ADP-B state ![]() EMDB-61672: Structure of nucleosome in ADP-B state EMDB-63123, PDB-9liu: EMDB-63131, PDB-9lj2: ![]() EMDB-63134: Structure motor1 of isw1-nucleosome double-bound complex in ATP-ATP state ![]() EMDB-63135: Structure of motor2 of isw1-nucleosome double-bound complex in ATP-ATP state ![]() EMDB-63136: Structure of nucleosome of isw1-nucleosome double-bound complex in ATP-ATP state ![]() EMDB-63138: Structure of motor1 of isw1-nucleosome double-bound complex in ADP-ADP+ state ![]() EMDB-63139: Structure of motor2 of isw1-nucleosome double-bound complex in ADP-ADP+ state ![]() EMDB-63143: Structure of nucleosome of isw1-nucleosome double-bound complex in ADP-ADP+ state |
| 化合物 | ![]() ChemComp-ATP: ![]() ChemComp-MG: ![]() ChemComp-ADP: ![]() ChemComp-CL: |
| 由来 |
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キーワード | DNA BINDING PROTEIN/DNA / Chromatin Remodeler / Nucleosome / DNA BINDING PROTEIN-DNA complex / DNA BINDING PROTEIN |
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