Publikation:

Molecular basis of global promoter sensing and nucleosome capture by the SWR1 chromatin remodeler

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Datum

2024

Autor:innen

Louder, Robert K.
Park, Giho
Ye, Ziyang
Cha, Justin S.
Gardner, Anne M.
Lei, Qin
Ranjan, Anand
Wu, Carl
et al.

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oops

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Deutsche Forschungsgemeinschaft (DFG): 496470458

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Open Access-Veröffentlichung
Open Access Green
Core Facility der Universität Konstanz

Gesperrt bis

30. November 2025

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Published

Erschienen in

Cell. Elsevier. 2024, 187(24), S. 6849-6864. ISSN 0092-8674. eISSN 1097-4172. Verfügbar unter: doi: 10.1016/j.cell.2024.09.007

Zusammenfassung

The SWR1 chromatin remodeling complex is recruited to +1 nucleosomes downstream of transcription start sites of eukaryotic promoters, where it exchanges histone H2A for the specialized variant H2A.Z. Here, we use cryoelectron microscopy (cryo-EM) to resolve the structural basis of the SWR1 interaction with free DNA, revealing a distinct open conformation of the Swr1 ATPase that enables sliding from accessible DNA to nucleosomes. A complete structural model of the SWR1-nucleosome complex illustrates critical roles for Swc2 and Swc3 subunits in oriented nucleosome engagement by SWR1. Moreover, an extended DNA-binding α helix within the Swc3 subunit enables sensing of nucleosome linker length and is essential for SWR1-promoter-specific recruitment and activity. The previously unresolved N-SWR1 subcomplex forms a flexible extended structure, enabling multivalent recognition of acetylated histone tails by reader domains to further direct SWR1 toward the +1 nucleosome. Altogether, our findings provide a generalizable mechanism for promoter-specific targeting of chromatin and transcription complexes.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
570 Biowissenschaften, Biologie

Schlagwörter

SWR1, chromatin remodeler, DNA sliding, H2A.Z, histone exchange, histone acetylation, histone reader, promoter, +1 nucleosome, cryo-EM

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ISO 690LOUDER, Robert K., Giho PARK, Ziyang YE, Justin S. CHA, Anne M. GARDNER, Qin LEI, Anand RANJAN, Eva HÖLLMÜLLER, Florian STENGEL, Carl WU, 2024. Molecular basis of global promoter sensing and nucleosome capture by the SWR1 chromatin remodeler. In: Cell. Elsevier. 2024, 187(24), S. 6849-6864. ISSN 0092-8674. eISSN 1097-4172. Verfügbar unter: doi: 10.1016/j.cell.2024.09.007
BibTex
@article{Louder2024-11Molec-71100,
  year={2024},
  doi={10.1016/j.cell.2024.09.007},
  title={Molecular basis of global promoter sensing and nucleosome capture by the SWR1 chromatin remodeler},
  number={24},
  volume={187},
  issn={0092-8674},
  journal={Cell},
  pages={6849--6864},
  author={Louder, Robert K. and Park, Giho and Ye, Ziyang and Cha, Justin S. and Gardner, Anne M. and Lei, Qin and Ranjan, Anand and Höllmüller, Eva and Stengel, Florian and Wu, Carl}
}
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