6YVV

Condensin complex from S.cerevisiae ATP-free apo bridged state


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Cryo-EM structures of holo condensin reveal a subunit flip-flop mechanism.

Lee, B.G.Merkel, F.Allegretti, M.Hassler, M.Cawood, C.Lecomte, L.O'Reilly, F.J.Sinn, L.R.Gutierrez-Escribano, P.Kschonsak, M.Bravo, S.Nakane, T.Rappsilber, J.Aragon, L.Beck, M.Lowe, J.Haering, C.H.

(2020) Nat Struct Mol Biol 27: 743-751

  • DOI: 10.1038/s41594-020-0457-x
  • Primary Citation of Related Structures:  
    6YVD, 6YVV, 6YVU

  • PubMed Abstract: 
  • Complexes containing a pair of structural maintenance of chromosomes (SMC) family proteins are fundamental for the three-dimensional (3D) organization of genomes in all domains of life. The eukaryotic SMC complexes cohesin and condensin are thought to fold interphase and mitotic chromosomes, respectively, into large loop domains, although the underlying molecular mechanisms have remained unknown ...

    Complexes containing a pair of structural maintenance of chromosomes (SMC) family proteins are fundamental for the three-dimensional (3D) organization of genomes in all domains of life. The eukaryotic SMC complexes cohesin and condensin are thought to fold interphase and mitotic chromosomes, respectively, into large loop domains, although the underlying molecular mechanisms have remained unknown. We used cryo-EM to investigate the nucleotide-driven reaction cycle of condensin from the budding yeast Saccharomyces cerevisiae. Our structures of the five-subunit condensin holo complex at different functional stages suggest that ATP binding induces the transition of the SMC coiled coils from a folded-rod conformation into a more open architecture. ATP binding simultaneously triggers the exchange of the two HEAT-repeat subunits bound to the SMC ATPase head domains. We propose that these steps result in the interconversion of DNA-binding sites in the catalytic core of condensin, forming the basis of the DNA translocation and loop-extrusion activities.


    Organizational Affiliation

    Biocenter, Julius-Maximilians-Universität Würzburg, Würzburg, Germany. christian.haering@uni-wuerzburg.de.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Structural maintenance of chromosomes protein 2,Structural maintenance of chromosomes protein 2 A1178Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: SMC2YFR031C
Find proteins for P38989 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Go to UniProtKB:  P38989
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Structural maintenance of chromosomes protein 4 B1418Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: SMC4YLR086WL9449.5
Find proteins for Q12267 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Go to UniProtKB:  Q12267
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Condensin complex subunit 2,Brn1 C773Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: BRN1YBL097WYBL0830
Find proteins for P38170 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Go to UniProtKB:  P38170
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Condensin complex subunit 1,Ycs4 D1185Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: YCS4LOC7YLR272CL8479.14
Find proteins for Q06156 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q06156 
Go to UniProtKB:  Q06156
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Medical Research Council (MRC, United Kingdom)United KingdomU105184326
Wellcome TrustUnited Kingdom202754/Z/16/Z
Medical Research Council (MRC, United Kingdom)United KingdomMC-A652-5PY00

Revision History  (Full details and data files)

  • Version 1.0: 2020-07-15
    Type: Initial release
  • Version 1.1: 2020-07-22
    Changes: Database references
  • Version 1.2: 2020-08-19
    Changes: Database references