1RJF

Structure of PPM1, a leucine carboxy methyltransferase involved in the regulation of protein phosphatase 2A activity


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.186 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of protein phosphatase methyltransferase 1 (PPM1), a leucine carboxyl methyltransferase involved in the regulation of protein phosphatase 2A activity

Leulliot, N.Quevillon-Cheruel, S.Sorel, I.de La Sierra-Gallay, I.L.Collinet, B.Graille, M.Blondeau, K.Bettache, N.Poupon, A.Janin, J.van Tilbeurgh, H.

(2004) J Biol Chem 279: 8351-8358

  • DOI: 10.1074/jbc.M311484200
  • Primary Citation of Related Structures:  
    1RJG, 1RJF, 1RJE, 1RJD

  • PubMed Abstract: 
  • The important role of the serine/threonine protein phosphatase 2A (PP2A) in various cellular processes requires a precise and dynamic regulation of PP2A activity, localization, and substrate specificity. The regulation of the function of PP2A involves the reversible methylation of the COOH group of the C-terminal leucine of the catalytic subunit, which, in turn, controls the enzyme's heteromultimeric composition and confers different protein recognition and substrate specificity ...

    The important role of the serine/threonine protein phosphatase 2A (PP2A) in various cellular processes requires a precise and dynamic regulation of PP2A activity, localization, and substrate specificity. The regulation of the function of PP2A involves the reversible methylation of the COOH group of the C-terminal leucine of the catalytic subunit, which, in turn, controls the enzyme's heteromultimeric composition and confers different protein recognition and substrate specificity. We have determined the structure of PPM1, the yeast methyltransferase responsible for methylation of PP2A. The structure of PPM1 reveals a common S-adenosyl-l-methionine-dependent methyltransferase fold, with several insertions conferring the specific function and substrate recognition. The complexes with the S-adenosyl-l-methionine methyl donor and the S-adenosyl-l-homocysteine product and inhibitor unambiguously revealed the co-substrate binding site and provided a convincing hypothesis for the PP2A C-terminal peptide binding site. The structure of PPM1 in a second crystal form provides clues to the dynamic nature of the PPM1/PP2A interaction.


    Organizational Affiliation

    Institut de Biochimie et de Biophysique Moléculaire et Cellulaire (CNRS-UMR 8619), Université Paris-Sud, Bât. 430, 91405 Orsay, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
carboxy methyl transferase for protein phosphatase 2A catalytic subunitA, B, C334Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: PPM1
EC: 2.1.1 (PDB Primary Data), 2.1.1.233 (UniProt)
UniProt
Find proteins for Q04081 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q04081 
Go to UniProtKB:  Q04081
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.186 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 112.395α = 90
b = 112.395β = 90
c = 162.848γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
CCP4data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-12-02
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance