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TitleFunctional characterization and architecture of recombinant yeast SWR1 histone exchange complex.
Journal, issue, pagesNucleic Acids Res, Vol. 45, Issue 12, Page 7249-7260, Year 2017
Publish dateJul 7, 2017
AuthorsChia-Liang Lin / Yuriy Chaban / David M Rees / Elizabeth A McCormack / Lorraine Ocloo / Dale B Wigley /
PubMed AbstractWe have prepared recombinant fourteen subunit yeast SWR1 complex from insect cells using a modified MultiBac system. The 1.07 MDa recombinant protein complex has histone-exchange activity. Full ...We have prepared recombinant fourteen subunit yeast SWR1 complex from insect cells using a modified MultiBac system. The 1.07 MDa recombinant protein complex has histone-exchange activity. Full exchange activity is realized with a single SWR1 complex bound to a nucleosome. We also prepared mutant complexes that lack a variety of subunits or combinations of subunits and these start to reveal roles for some of these subunits as well as indicating interactions between them in the full complex. Complexes containing a series of N-terminally and C-terminally truncated Swr1 subunits reveal further details about interactions between subunits as well as their binding sites on the Swr1 subunit. Finally, we present electron microscopy studies revealing the dynamic nature of the complex and a 21 Å resolution reconstruction of the intact complex provides details not apparent in previously reported structures, including a large central cavity of sufficient size to accommodate a nucleosome.
External linksNucleic Acids Res / PubMed:28499038 / PubMed Central
MethodsEM (single particle)
Resolution21.0 Å
Structure data

EMDB-3607:
SWR1 chromatin remodelling complex
Method: EM (single particle) / Resolution: 21.0 Å

Source
  • Saccharomyces cerevisiae (brewer's yeast)

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