2JAK

Human PP2A regulatory subunit B56g


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.214 

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

  • 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 ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SERINE/THREONINE-PROTEIN PHOSPHATASE 2A 56 KDA REGULATORY SUBUNIT GAMMA ISOFORM
A
392Homo sapiensMutation(s): 0 
Gene Names: PPP2R5C (KIAA0044)
Find proteins for Q13362 (Homo sapiens)
Go to Gene View: PPP2R5C
Go to UniProtKB:  Q13362
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.214 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 105.800α = 90.00
b = 105.800β = 90.00
c = 82.100γ = 120.00
Software Package:
Software NamePurpose
SOLVE/RESOLVEphasing
REFMACrefinement
XSCALEdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

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