7ZJS

Structural basis of centromeric cohesion protection by SGO1

  • Classification: CELL CYCLE
  • Organism(s): Homo sapiens
  • Expression System: Escherichia coli
  • Mutation(s): No 

  • Deposited: 2022-04-11 Released: 2023-04-26 
  • Deposition Author(s): Patel, A., Panne, D.
  • Funding Organization(s): Wellcome Trust, Medical Research Council (MRC, United Kingdom)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.24 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.269 
  • R-Value Observed: 0.270 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural basis of centromeric cohesion protection.

Garcia-Nieto, A.Patel, A.Li, Y.Oldenkamp, R.Feletto, L.Graham, J.J.Willems, L.Muir, K.W.Panne, D.Rowland, B.D.

(2023) Nat Struct Mol Biol 30: 853-859

  • DOI: https://doi.org/10.1038/s41594-023-00968-y
  • Primary Citation of Related Structures:  
    7ZJS

  • PubMed Abstract: 

    In the early stages of mitosis, cohesin is released from chromosome arms but not from centromeres. The protection of centromeric cohesin by SGO1 maintains the sister chromatid cohesion that resists the pulling forces of microtubules until all chromosomes are attached in a bipolar manner to the mitotic spindle. Here we present the X-ray crystal structure of a segment of human SGO1 bound to a conserved surface of the cohesin complex. SGO1 binds to a composite interface formed by the SA2 and SCC1 RAD21 subunits of cohesin. SGO1 shares this binding interface with CTCF, indicating that these distinct chromosomal regulators control cohesin through a universal principle. This interaction is essential for the localization of SGO1 to centromeres and protects centromeric cohesin against WAPL-mediated cohesin release. SGO1-cohesin binding is maintained until the formation of microtubule-kinetochore attachments and is required for faithful chromosome segregation and the maintenance of a stable karyotype.


  • Organizational Affiliation

    Division of Cell Biology, The Netherlands Cancer Institute, Amsterdam, the Netherlands.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cohesin subunit SA-2
A, C
1,231Homo sapiensMutation(s): 0 
Gene Names: STAG2SA2
UniProt & NIH Common Fund Data Resources
Find proteins for Q8N3U4 (Homo sapiens)
Explore Q8N3U4 
Go to UniProtKB:  Q8N3U4
PHAROS:  Q8N3U4
GTEx:  ENSG00000101972 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8N3U4
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Double-strand-break repair protein rad21 homolog
B, D
631Homo sapiensMutation(s): 0 
Gene Names: RAD21HR21KIAA0078NXP1SCC1
UniProt & NIH Common Fund Data Resources
Find proteins for O60216 (Homo sapiens)
Explore O60216 
Go to UniProtKB:  O60216
PHAROS:  O60216
GTEx:  ENSG00000164754 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO60216
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Shugoshin 1
E, F
11Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q5FBB7 (Homo sapiens)
Explore Q5FBB7 
Go to UniProtKB:  Q5FBB7
PHAROS:  Q5FBB7
GTEx:  ENSG00000129810 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5FBB7
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.24 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.269 
  • R-Value Observed: 0.270 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 78.808α = 90
b = 181.098β = 94.254
c = 111.374γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Wellcome TrustUnited Kingdom219534/Z/19/Z
Medical Research Council (MRC, United Kingdom)United KingdomMR/W001667/1

Revision History  (Full details and data files)

  • Version 1.0: 2023-04-26
    Type: Initial release
  • Version 1.1: 2023-05-03
    Changes: Database references
  • Version 1.2: 2023-06-28
    Changes: Database references
  • Version 1.3: 2024-02-07
    Changes: Data collection, Refinement description