5SW9

The structure of the PP2A B56 subunit RepoMan complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.846 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.2 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: 10.1016/j.str.2016.09.010
  • Primary Citation of Related Structures:  

  • 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 pr ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit gamma isoform
A
355Homo sapiensMutation(s): 0 
Gene Names: PPP2R5C (KIAA0044)
Find proteins for Q13362 (Homo sapiens)
Go to Gene View: PPP2R5C
Go to UniProtKB:  Q13362
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
RepoMan
B
21Homo sapiensMutation(s): 0 
Gene Names: CDCA2
Find proteins for Q69YH5 (Homo sapiens)
Go to Gene View: CDCA2
Go to UniProtKB:  Q69YH5
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
B
L-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.846 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.198 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 53.598α = 90.00
b = 108.959β = 90.00
c = 120.065γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Neurological Disorders and StrokeUnited States1R01NS091336
National Institutes of Health/National Institute of General Medical SciencesUnited StatesR01GM098482

Revision History 

  • Version 1.0: 2016-11-30
    Type: Initial release
  • Version 1.1: 2017-01-04
    Type: Database references
  • Version 1.2: 2017-09-13
    Type: Author supporting evidence