Journal: Science / Year: 2019 Title: Structure of the RSC complex bound to the nucleosome. Authors: Youpi Ye / Hao Wu / Kangjing Chen / Cedric R Clapier / Naveen Verma / Wenhao Zhang / Haiteng Deng / Bradley R Cairns / Ning Gao / Zhucheng Chen / Abstract: The RSC complex remodels chromatin structure and regulates gene transcription. We used cryo-electron microscopy to determine the structure of yeast RSC bound to the nucleosome. RSC is delineated into ...The RSC complex remodels chromatin structure and regulates gene transcription. We used cryo-electron microscopy to determine the structure of yeast RSC bound to the nucleosome. RSC is delineated into the adenosine triphosphatase motor, the actin-related protein module, and the substrate recruitment module (SRM). RSC binds the nucleosome mainly through the motor, with the auxiliary subunit Sfh1 engaging the H2A-H2B acidic patch to enable nucleosome ejection. SRM is organized into three substrate-binding lobes poised to bind their respective nucleosomal epitopes. The relative orientations of the SRM and the motor on the nucleosome explain the directionality of DNA translocation and promoter nucleosome repositioning by RSC. Our findings shed light on RSC assembly and functionality, and they provide a framework to understand the mammalian homologs BAF/PBAF and the Sfh1 ortholog INI1/BAF47, which are frequently mutated in cancers.
Name: Histone H3.2 / Number of Copies: 2 / Recombinant expression: No
Mass
Theoretical: 15.421101 kDa
Source
Species: Xenopus laevis (African clawed frog)
Source (engineered)
Expression System: Escherichia coli (E. coli)
+
Component #3: protein, Histone H4
Protein
Name: Histone H4 / Number of Copies: 2 / Recombinant expression: No
Mass
Theoretical: 11.394426 kDa
Source
Species: Xenopus laevis (African clawed frog)
Source (engineered)
Expression System: Escherichia coli (E. coli)
+
Component #4: protein, Histone H2A
Protein
Name: Histone H2A / Number of Copies: 2 / Recombinant expression: No
Mass
Theoretical: 14.109436 kDa
Source
Species: Xenopus laevis (African clawed frog)
Source (engineered)
Expression System: Escherichia coli (E. coli)
+
Component #5: nucleic-acid, DNA 167
nucleic acid
Name: DNA 167 / Class: DNA / Structure: OTHER / Synthetic: No Sequence: (DG)(DA)(DT)(DG)(DA)(DG)(DA)(DA)(DT)(DC) (DC)(DC)(DG)(DG)(DT)(DG)(DC)(DC)(DG)(DA) (DG)(DG)(DC)(DC)(DG)(DC)(DT)(DC)(DA)(DA) (DT)(DT)(DG)(DG)(DT)(DC)(DG)(DT)(DA)(DG) (DA)(DC)(DA)(DG)(DC)(DT) ...Sequence:
Name: DNA 167 / Class: DNA / Structure: OTHER / Synthetic: No Sequence: (DC)(DT)(DA)(DG)(DT)(DA)(DC)(DT)(DT)(DC) (DT)(DC)(DG)(DA)(DC)(DA)(DA)(DG)(DC)(DT) (DT)(DC)(DA)(DG)(DG)(DA)(DT)(DG)(DT)(DA) (DT)(DA)(DT)(DA)(DT)(DC)(DT)(DG)(DA)(DC) (DA)(DC)(DG)(DT)(DG)(DC) ...Sequence:
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