6OYL

The structure of the PP2A B56 subunit KIF4A complex

  • Classification: HYDROLASE
  • Organism(s): Homo sapiens
  • Expression System: Escherichia coli
  • Mutation(s): Yes 

  • Deposited: 2019-05-14 Released: 2020-03-25 
  • Deposition Author(s): Wang, X., Page, R., Peti, W.
  • Funding Organization(s): National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS), National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.15 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.216 

Starting Model: experimental
View more details

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A dynamic charge-charge interaction modulates PP2A:B56 substrate recruitment.

Wang, X.Garvanska, D.H.Nasa, I.Ueki, Y.Zhang, G.Kettenbach, A.N.Peti, W.Nilsson, J.Page, R.

(2020) Elife 9

  • DOI: https://doi.org/10.7554/eLife.55966
  • Primary Citation of Related Structures:  
    6OYL, 6VRO

  • PubMed Abstract: 

    The recruitment of substrates by the ser/thr protein phosphatase 2A (PP2A) is poorly understood, limiting our understanding of PP2A-regulated signaling. Recently, the first PP2A:B56 consensus binding motif, LxxIxE, was identified. However, most validated LxxIxE motifs bind PP2A:B56 with micromolar affinities, suggesting that additional motifs exist to enhance PP2A:B56 binding. Here, we report the requirement of a positively charged motif in a subset of PP2A:B56 interactors, including KIF4A, to facilitate B56 binding via dynamic, electrostatic interactions. Using molecular and cellular experiments, we show that a conserved, negatively charged groove on B56 mediates dynamic binding. We also discovered that this positively charged motif, in addition to facilitating KIF4A dephosphorylation, is essential for condensin I binding, a function distinct and exclusive from PP2A-B56 binding. Together, these results reveal how dynamic, charge-charge interactions fine-tune the interactions mediated by specific motifs, providing a new framework for understanding how PP2A regulation drives cellular signaling.


  • Organizational Affiliation

    Department of Chemistry and Biochemistry, University of Arizona, Tucson, United States.


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
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Chromosome-associated kinesin KIF4A44Homo sapiensMutation(s): 4 
Gene Names: KIF4AKIF4
UniProt & NIH Common Fund Data Resources
Find proteins for O95239 (Homo sapiens)
Explore O95239 
Go to UniProtKB:  O95239
PHAROS:  O95239
GTEx:  ENSG00000090889 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO95239
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.15 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.216 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.29α = 90
b = 108.037β = 90
c = 117.808γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

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 StatesR01NS091336
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01GM098482

Revision History  (Full details and data files)

  • Version 1.0: 2020-03-25
    Type: Initial release
  • Version 1.1: 2020-04-01
    Changes: Database references
  • Version 1.2: 2023-10-11
    Changes: Data collection, Database references, Refinement description