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Structure paper

TitleStructure and dynamics of the yeast SWR1-nucleosome complex.
Journal, issue, pagesScience, Vol. 362, Issue 6411, Year 2018
Publish dateOct 12, 2018
AuthorsOliver Willhoft / Mohamed Ghoneim / Chia-Liang Lin / Eugene Y D Chua / Martin Wilkinson / Yuriy Chaban / Rafael Ayala / Elizabeth A McCormack / Lorraine Ocloo / David S Rueda / Dale B Wigley /
PubMed AbstractThe yeast SWR1 complex exchanges histone H2A in nucleosomes with Htz1 (H2A.Z in humans). The cryo-electron microscopy structure of the SWR1 complex bound to a nucleosome at 3.6-angstrom resolution ...The yeast SWR1 complex exchanges histone H2A in nucleosomes with Htz1 (H2A.Z in humans). The cryo-electron microscopy structure of the SWR1 complex bound to a nucleosome at 3.6-angstrom resolution reveals details of the intricate interactions between components of the SWR1 complex and its nucleosome substrate. Interactions between the Swr1 motor domains and the DNA wrap at superhelical location 2 distort the DNA, causing a bulge with concomitant translocation of the DNA by one base pair, coupled to conformational changes of the histone core. Furthermore, partial unwrapping of the DNA from the histone core takes place upon binding of nucleosomes to SWR1 complex. The unwrapping, as monitored by single-molecule data, is stabilized and has its dynamics altered by adenosine triphosphate binding but does not require hydrolysis.
External linksScience / PubMed:30309918
MethodsEM (single particle)
Resolution3.6 Å
Structure data

4395

6gej

EMDB-4395, PDB-6gej:
Chromatin remodeller-nucleosome complex at 3.6 A resolution.
Method: EM (single particle) / Resolution: 3.6 Å

4396

6gen

EMDB-4396, PDB-6gen:
Chromatin remodeller-nucleosome complex at 4.5 A resolution.
Method: EM (single particle) / Resolution: 3.6 Å

Chemicals

ChemComp-ADP:
ADENOSINE-5'-DIPHOSPHATE / ADP, energy-carrying molecule*YM / Adenosine diphosphate

ChemComp-BEF:
BERYLLIUM TRIFLUORIDE ION

ChemComp-MG:
Unknown entry

ChemComp-ZN:
Unknown entry

Source
  • saccharomyces cerevisiae (strain atcc 204508 / s288c) (yeast)
  • synthetic construct (others)
KeywordsNUCLEAR PROTEIN / Chromatin / Remodeller / ATPase / Histone

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