1W1W

Sc Smc1hd:Scc1-C complex, ATPgS

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.242 

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This is version 1.2 of the entry. See complete history. 


Literature

Structure and stability of cohesin's Smc1-kleisin interaction.

Haering, C.H., Schoffnegger, D., Nishino, T., Helmhart, W., Nasmyth, K., Lowe, J.

(2004) Mol Cell 15: 951-964

  • DOI: 10.1016/j.molcel.2004.08.030
  • Primary Citation of Related Structures:  
    1W1W

  • PubMed Abstract: 

    • A multisubunit complex called cohesin forms a huge ring structure that mediates sister chromatid cohesion, possibly by entrapping sister DNAs following replication. Cohesin's kleisin subunit Scc1 completes the ring, connecting the ABC-like ATPase heads of a V-shaped Smc1/3 heterodimer ...

    A multisubunit complex called cohesin forms a huge ring structure that mediates sister chromatid cohesion, possibly by entrapping sister DNAs following replication. Cohesin's kleisin subunit Scc1 completes the ring, connecting the ABC-like ATPase heads of a V-shaped Smc1/3 heterodimer. Proteolytic cleavage of Scc1 by separase triggers sister chromatid disjunction, presumably by breaking the Scc1 bridge. One half of the SMC-kleisin bridge is revealed here by a crystal structure of Smc1's ATPase complexed with Scc1's C-terminal domain. The latter forms a winged helix that binds a pair of beta strands in Smc1's ATPase head. Mutation of conserved residues within the contact interface destroys Scc1's interaction with Smc1/3 heterodimers and eliminates cohesin function. Interaction of Scc1's N terminus with Smc3 depends on prior C terminus connection with Smc1. There is little or no turnover of Smc1-Scc1 interactions within cohesin complexes in vivo because expression of noncleavable Scc1 after DNA replication does not hinder anaphase.

    Organizational Affiliation: 

    Research Institute of Molecular Pathology (IMP), Dr. Bohr-Gasse 7, A-1030 Vienna, Austria.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
STRUCTURAL MAINTENANCE OF CHROMOSOME 1A, B, C, D430Saccharomyces cerevisiaeMutation(s): 0 
UniProt
Find proteins for P32908 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Go to UniProtKB:  P32908
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UniProt GroupP32908
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
SISTER CHROMATID COHESION PROTEIN 1E, F, G, H121Saccharomyces cerevisiaeMutation(s): 0 
UniProt
Find proteins for Q12158 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q12158 
Go to UniProtKB:  Q12158
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ12158
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.242 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 138.465α = 90
b = 138.465β = 90
c = 284.074γ = 90
Software Package:
Software NamePurpose
CNSrefinement
MOSFLMdata reduction
SCALAdata scaling
SOLVEphasing

Structure Validation

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Ligand Structure Quality Assessment 


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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-09-30
    Type: Initial release
  • Version 1.1: 2013-02-06
    Changes: Atomic model, Derived calculations, Non-polymer description, Refinement description, Version format compliance
  • Version 1.2: 2018-10-10
    Changes: Data collection, Database references, Source and taxonomy, Structure summary