4UX3

cohesin Smc3-HD:Scc1-N complex from yeast


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.329 
  • R-Value Work: 0.274 
  • R-Value Observed: 0.277 

wwPDB Validation 3D Report Full Report



Literature

Closing the Cohesin Ring: Structure and Function of its Smc3-Kleisin Interface.

Gligoris, T.G.Scheinost, J.C.Burmann, F.Petela, N.Chan, K.Uluocak, P.Beckouet, F.Gruber, S.Nasmyth, K.Lowe, J.

(2014) Science 346: 963

  • DOI: 10.1126/science.1256917
  • Primary Citation of Related Structures:  
    4UX3

  • PubMed Abstract: 
  • Through their association with a kleisin subunit (Scc1), cohesin's Smc1 and Smc3 subunits are thought to form tripartite rings that mediate sister chromatid cohesion. Unlike the structure of Smc1/Smc3 and Smc1/Scc1 interfaces, that of Smc3/Scc1 is no ...

    Through their association with a kleisin subunit (Scc1), cohesin's Smc1 and Smc3 subunits are thought to form tripartite rings that mediate sister chromatid cohesion. Unlike the structure of Smc1/Smc3 and Smc1/Scc1 interfaces, that of Smc3/Scc1 is not known. Disconnection of this interface is thought to release cohesin from chromosomes in a process regulated by acetylation. We show here that the N-terminal domain of yeast Scc1 contains two α helices, forming a four-helix bundle with the coiled coil emerging from Smc3's adenosine triphosphatase head. Mutations affecting this interaction compromise cohesin's association with chromosomes. The interface is far from Smc3 residues, whose acetylation prevents cohesin's dissociation from chromosomes. Cohesin complexes holding chromatids together in vivo do indeed have the configuration of hetero-trimeric rings, and sister DNAs are entrapped within these.


    Organizational Affiliation

    MRC Laboratory of Molecular Biology, Cambridge, CB2 0QH, UK. kim.nasmyth@bioch.ox.ac.uk jyl@mrc-lmb.cam.ac.uk.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
STRUCTURAL MAINTENANCE OF CHROMOSOMES PROTEIN 3A543Saccharomyces cerevisiaeMutation(s): 0 
Find proteins for P47037 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P47037 
Go to UniProtKB:  P47037
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
MITOTIC CHROMOSOME DETERMINANT-RELATED PROTEINB121Saccharomyces cerevisiaeMutation(s): 0 
Find proteins for Q12158 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q12158 
Go to UniProtKB:  Q12158
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AGS
Query on AGS

Download CCD File 
A
PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
C10 H16 N5 O12 P3 S
NLTUCYMLOPLUHL-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.329 
  • R-Value Work: 0.274 
  • R-Value Observed: 0.277 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 73.151α = 90
b = 94.801β = 90
c = 284.768γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-12-03
    Type: Initial release