1T3K

NMR structure of a CDC25-like dual-specificity tyrosine phosphatase of Arabidopsis thaliana


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A small CDC25 dual-specificity tyrosine-phosphatase isoform in Arabidopsis thaliana.

Landrieu, I.Da Costa, M.De Veylder, L.Dewitte, F.Vandepoele, K.Hassan, S.Wieruszeski, J.M.Faure, J.D.Van Montagu, M.Inze, D.Lippens, G.

(2004) Proc.Natl.Acad.Sci.Usa 101: 13380-13385

  • DOI: 10.1073/pnas.0405248101

  • PubMed Abstract: 
  • The dual-specificity CDC25 phosphatases are critical positive regulators of cyclin-dependent kinases (CDKs). Even though an antagonistic Arabidopsis thaliana WEE1 kinase has been cloned and tyrosine phosphorylation of its CDKs has been demonstrated, ...

    The dual-specificity CDC25 phosphatases are critical positive regulators of cyclin-dependent kinases (CDKs). Even though an antagonistic Arabidopsis thaliana WEE1 kinase has been cloned and tyrosine phosphorylation of its CDKs has been demonstrated, no valid candidate for a CDC25 protein has been reported in higher plants. We identify a CDC25-related protein (Arath;CDC25) of A. thaliana, constituted by a sole catalytic domain. The protein has a tyrosine-phosphatase activity and stimulates the kinase activity of Arabidopsis CDKs. Its tertiary structure was obtained by NMR spectroscopy and confirms that Arath;CDC25 belongs structurally to the classical CDC25 superfamily with a central five-stranded beta-sheet surrounded by helices. A particular feature of the protein, however, is the presence of an additional zinc-binding loop in the C-terminal part. NMR mapping studies revealed the interaction with phosphorylated peptidic models derived from the conserved CDK loop containing the phosphothreonine-14 and phosphotyrosine-15. We conclude that despite sequence divergence, Arath;CDC25 is structurally and functionally an isoform of the CDC25 superfamily, which is conserved in yeast and in plants, including Arabidopsis and rice.


    Organizational Affiliation

    Unité Mixte de Recherche 8525 Centre National de la Recherche Scientifique-Lille2, Institut de Biologie de Lille/Pasteur Institute of Lille, 59019 Lille Cedex, France. isabelle.landrieu@ibl.fr




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Dual-specificity tyrosine phosphatase
A
152Arabidopsis thalianaGene Names: CDC25 (ACR2, STR5)
EC: 1.20.4.-, 3.1.3.48
Find proteins for Q8GY31 (Arabidopsis thaliana)
Go to UniProtKB:  Q8GY31
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations 
  • Olderado: 1T3K Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-09-07
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance