7QEN

S.c. Condensin core in DNA- and ATP-bound state


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.46 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

A hold-and-feed mechanism drives directional DNA loop extrusion by condensin.

Shaltiel, I.A.Datta, S.Lecomte, L.Hassler, M.Kschonsak, M.Bravo, S.Stober, C.Ormanns, J.Eustermann, S.Haering, C.H.

(2022) Science 376: 1087-1094

  • DOI: 10.1126/science.abm4012
  • Primary Citation of Related Structures:  
    7QEN, 7QFW

  • PubMed Abstract: 
  • Structural maintenance of chromosomes (SMC) protein complexes structure genomes by extruding DNA loops, but the molecular mechanism that underlies their activity has remained unknown. We show that the active condensin complex entraps the bases of a DNA loop transiently in two separate chambers ...

    Structural maintenance of chromosomes (SMC) protein complexes structure genomes by extruding DNA loops, but the molecular mechanism that underlies their activity has remained unknown. We show that the active condensin complex entraps the bases of a DNA loop transiently in two separate chambers. Single-molecule imaging and cryo-electron microscopy suggest a putative power-stroke movement at the first chamber that feeds DNA into the SMC-kleisin ring upon adenosine triphosphate binding, whereas the second chamber holds on upstream of the same DNA double helix. Unlocking the strict separation of "motor" and "anchor" chambers turns condensin from a one-sided into a bidirectional DNA loop extruder. We conclude that the orientation of two topologically bound DNA segments during the SMC reaction cycle determines the directionality of DNA loop extrusion.


    Organizational Affiliation

    Structural and Computational Biology Unit, EMBL, 69117 Heidelberg, Germany.



Macromolecules

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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Structural maintenance of chromosomes protein 4C [auth B]1,478Saccharomyces cerevisiae CEN.PK113-7DSaccharomyces cerevisiaeMutation(s): 1 
Gene Names: SMC4YLR086WL9449.5
UniProt
Find proteins for Q12267 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Go to UniProtKB:  Q12267
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UniProt GroupQ12267
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Structural maintenance of chromosomes protein 2D [auth A]1,170Saccharomyces cerevisiaeMutation(s): 1 
Gene Names: SMC2YFR031C
UniProt
Find proteins for P38989 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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UniProt GroupP38989
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Condensin complex subunit 2E [auth C]811Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: BRN1YBL097WYBL0830
UniProt
Find proteins for P38170 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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UniProt GroupP38170
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Condensin complex subunit 1F [auth D]1,176Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: YCS4LOC7YLR272CL8479.14
UniProt
Find proteins for Q06156 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Go to UniProtKB:  Q06156
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UniProt GroupQ06156
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Entity ID: 1
MoleculeChainsLengthOrganismImage
DNA (35-MER)A [auth F]50synthetic construct
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Entity ID: 2
MoleculeChainsLengthOrganismImage
DNA (35-MER)B [auth G]50synthetic construct
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP (Subject of Investigation/LOI)
Query on ATP

Download Ideal Coordinates CCD File 
G [auth B],
I [auth A]
ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N
 Ligand Interaction
MG (Subject of Investigation/LOI)
Query on MG

Download Ideal Coordinates CCD File 
H [auth B],
J [auth A]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.46 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European Research Council (ERC)European Union681365

Revision History  (Full details and data files)

  • Version 1.0: 2022-06-15
    Type: Initial release