2JAK

Human PP2A regulatory subunit B56g


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.216 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The Structure of the Pp2A Regulatory Subunit B56 Gamma: The Remaining Piece of the Pp2A Jigsaw Puzzle.

Magnusdottir, A.Stenmark, P.Flodin, S.Nyman, T.Kotenyova, T.Graslund, S.Ogg, D.Nordlund, P.

(2009) Proteins 74: 212

  • DOI: 10.1002/prot.22150
  • Primary Citation of Related Structures:  
    2JAK

  • PubMed Abstract: 
  • The PP2A serine/threonine phosphatase regulates a plethora of cellular processes. In the cell the predominant form of the enzyme is a heterotrimer, formed by a core dimer composed of a catalytic and a scaffolding subunit, which assemble together with one of a range of different regulatory B subunits ...

    The PP2A serine/threonine phosphatase regulates a plethora of cellular processes. In the cell the predominant form of the enzyme is a heterotrimer, formed by a core dimer composed of a catalytic and a scaffolding subunit, which assemble together with one of a range of different regulatory B subunits. Here, we present the first structure of a free non-complexed B subunit, B56 gamma. Comparison with the recent structures of a heterotrimeric complex and the core dimer reveals several significant conformational changes in the interface region between the B56 gamma and the core dimer. These allow for an assembly scheme of the PP2A holoenzyme to be put forth where B56 gamma first complexes with the scaffolding subunit and subsequently binds to the catalytic subunit and this induces the formation of a binding site for the invariant C-terminus of the catalytic subunit that locks in the complex as a last step of assembly.


    Organizational Affiliation

    Department of Biochemistry and Biophysics, Stockholm University, 10691 Stockholm, Sweden.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SERINE/THREONINE-PROTEIN PHOSPHATASE 2A 56 KDA REGULATORY SUBUNIT GAMMA ISOFORMA392Homo sapiensMutation(s): 0 
Gene Names: PPP2R5CKIAA0044
Find proteins for Q13362 (Homo sapiens)
Explore Q13362 
Go to UniProtKB:  Q13362
NIH Common Fund Data Resources
PHAROS:  Q13362
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.216 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 105.8α = 90
b = 105.8β = 90
c = 82.1γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
SOLVE/RESOLVEphasing

Structure Validation

View Full Validation Report



Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2006-12-04
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance