5Z3L

Structure of Snf2-nucleosome complex in apo state


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.31 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report



Literature

Mechanism of DNA translocation underlying chromatin remodelling by Snf2.

Li, M.Xia, X.Tian, Y.Jia, Q.Liu, X.Lu, Y.Li, M.Li, X.Chen, Z.

(2019) Nature 567: 409-413

  • DOI: 10.1038/s41586-019-1029-2
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Chromatin remodellers include diverse enzymes with distinct biological functions, but nucleosome-sliding activity appears to be a common theme 1,2 . Among the remodelling enzymes, Snf2 serves as the prototype to study the action of this pr ...

    Chromatin remodellers include diverse enzymes with distinct biological functions, but nucleosome-sliding activity appears to be a common theme 1,2 . Among the remodelling enzymes, Snf2 serves as the prototype to study the action of this protein family. Snf2 and related enzymes share two conserved RecA-like lobes 3 , which by themselves are able to couple ATP hydrolysis to chromatin remodelling. The mechanism by which these enzymes couple ATP hydrolysis to translocate the nucleosome along the DNA remains unclear 2,4-8 . Here we report the structures of Saccharomyces cerevisiae Snf2 bound to the nucleosome in the presence of ADP and ADP-BeF x . Snf2 in the ADP-bound state adopts an open conformation similar to that in the apo state, and induces a one-base-pair DNA bulge at superhelix location 2 (SHL2), with the tracking strand showing greater distortion than the guide strand. The DNA distortion propagates to the proximal end, leading to staggered translocation of the two strands. The binding of ADP-BeF x triggers a closed conformation of the enzyme, resetting the nucleosome to a relaxed state. Snf2 shows altered interactions with the DNA in different nucleotide states, providing the structural basis for DNA translocation. Together, our findings suggest a fundamental mechanism for the DNA translocation that underlies chromatin remodelling.


    Organizational Affiliation

    Beijing Advanced Innovation Center for Structural Biology, Beijing, China. zhucheng_chen@tsinghua.edu.cn.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Histone H3.2A, E135Xenopus laevisMutation(s): 0 
Find proteins for P84233 (Xenopus laevis)
Explore P84233 
Go to UniProtKB:  P84233
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Histone H4B, F102Xenopus laevisMutation(s): 0 
Find proteins for P62799 (Xenopus laevis)
Explore P62799 
Go to UniProtKB:  P62799
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Histone H2AC, G129Xenopus laevisMutation(s): 0 
Gene Names: hist1h2ajLOC494591
Find proteins for P06897 (Xenopus laevis)
Explore P06897 
Go to UniProtKB:  P06897
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Histone H2B 1.1D, H122Xenopus laevisMutation(s): 0 
Find proteins for P02281 (Xenopus laevis)
Explore P02281 
Go to UniProtKB:  P02281
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
Transcription regulatory protein SNF2O735Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: SNF2GAM1RIC1SWI2TYE3YOR290C
EC: 3.6.4
Find proteins for P22082 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P22082 
Go to UniProtKB:  P22082
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar nucleic acids by: Sequence  |  Structure

Entity ID: 5
MoleculeChainsLengthOrganism
DNA (167-MER)I167synthetic construct

Find similar nucleic acids by: Sequence  |  Structure

Entity ID: 6
MoleculeChainsLengthOrganism
DNA (167-MER)J167synthetic construct
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.31 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Key Research and Development ProgramChina2017YFA0102900

Revision History 

  • Version 1.0: 2019-04-03
    Type: Initial release