1C25

HUMAN CDC25A CATALYTIC DOMAIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.296 
  • R-Value Work: 0.227 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of the catalytic domain of the human cell cycle control phosphatase, Cdc25A.

Fauman, E.B.Cogswell, J.P.Lovejoy, B.Rocque, W.J.Holmes, W.Montana, V.G.Piwnica-Worms, H.Rink, M.J.Saper, M.A.

(1998) Cell 93: 617-625


  • PubMed Abstract: 
  • Cdc25 phosphatases activate the cell division kinases throughout the cell cycle. The 2.3 A structure of the human Cdc25A catalytic domain reveals a small alpha/beta domain with a fold unlike previously described phosphatase structures but identical t ...

    Cdc25 phosphatases activate the cell division kinases throughout the cell cycle. The 2.3 A structure of the human Cdc25A catalytic domain reveals a small alpha/beta domain with a fold unlike previously described phosphatase structures but identical to rhodanese, a sulfur-transfer protein. Only the active-site loop, containing the Cys-(X)5-Arg motif, shows similarity to the tyrosine phosphatases. In some crystals, the catalytic Cys-430 forms a disulfide bond with the invariant Cys-384, suggesting that Cdc25 may be self-inhibited during oxidative stress. Asp-383, previously proposed to be the general acid, instead serves a structural role, forming a conserved buried salt-bridge. We propose that Glu-431 may act as a general acid. Structure-based alignments suggest that the noncatalytic domain of the MAP kinase phosphatases will share this topology, as will ACR2, a eukaryotic arsenical resistance protein.


    Organizational Affiliation

    Department of Biological Chemistry, The University of Michigan, Ann Arbor 48109-1055, USA. fauman@umich.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CDC25A
A
161Homo sapiensGene Names: CDC25A
EC: 3.1.3.48
Find proteins for P30304 (Homo sapiens)
Go to Gene View: CDC25A
Go to UniProtKB:  P30304
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.296 
  • R-Value Work: 0.227 
  • Space Group: P 41
Unit Cell:
Length (Å)Angle (°)
a = 43.507α = 90.00
b = 43.507β = 90.00
c = 117.096γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
X-PLORphasing
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-08-19
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance