5K6S

The structure of the PP2A B56 subunit BubR1 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.79 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.201 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Expanding the PP2A Interactome by Defining a B56-Specific SLiM.

Wang, X.Bajaj, R.Bollen, M.Peti, W.Page, R.

(2016) Structure 24: 2174-2181

  • DOI: https://doi.org/10.1016/j.str.2016.09.010
  • Primary Citation of Related Structures:  
    5K6S, 5SW9, 5SWF

  • PubMed Abstract: 

    Specific interactions between proteins govern essential physiological processes including signaling. Many enzymes, especially the family of serine/threonine phosphatases (PSPs: PP1, PP2A, and PP2B/calcineurin/CN), recruit substrates and regulatory proteins by binding short linear motifs (SLiMs), short sequences found within intrinsically disordered regions that mediate specific protein-protein interactions. While tremendous progress had been made in identifying where and how SLiMs bind PSPs, especially PP1 and CN, essentially nothing is known about how SLiMs bind PP2A, a validated cancer drug target. Here we describe three structures of a PP2A-SLiM interaction (B56:pS-RepoMan, B56:pS-BubR1, and B56:pSpS-BubR1), show that this PP2A-specific SLiM is defined as LSPIxE, and then use these data to discover scores of likely PP2A regulators and substrates. Together, these data provide a powerful approach not only for dissecting PP2A interaction networks in cells but also for targeting PP2A diseases, such as cancer.


  • Organizational Affiliation

    Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, Providence, RI 02912, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit gamma isoform355Homo sapiensMutation(s): 0 
Gene Names: PPP2R5CKIAA0044
UniProt & NIH Common Fund Data Resources
Find proteins for Q13362 (Homo sapiens)
Explore Q13362 
Go to UniProtKB:  Q13362
PHAROS:  Q13362
GTEx:  ENSG00000078304 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ13362
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
BubR119Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for O60566 (Homo sapiens)
Explore O60566 
Go to UniProtKB:  O60566
PHAROS:  O60566
GTEx:  ENSG00000156970 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO60566
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
SEP
Query on SEP
B
L-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.79 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.201 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.231α = 90
b = 107.811β = 90
c = 117.998γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata scaling
PHASERphasing
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)United States1R01NS091336
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01GM098482

Revision History  (Full details and data files)

  • Version 1.0: 2016-12-07
    Type: Initial release
  • Version 1.1: 2017-01-04
    Changes: Database references
  • Version 1.2: 2017-09-06
    Changes: Author supporting evidence
  • Version 1.3: 2019-12-18
    Changes: Author supporting evidence
  • Version 1.4: 2023-09-27
    Changes: Data collection, Database references, Refinement description