1FQ1

CRYSTAL STRUCTURE OF KINASE ASSOCIATED PHOSPHATASE (KAP) IN COMPLEX WITH PHOSPHO-CDK2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.313 
  • R-Value Work: 0.235 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Phosphoprotein-protein interactions revealed by the crystal structure of kinase-associated phosphatase in complex with phosphoCDK2.

Song, H.Hanlon, N.Brown, N.R.Noble, M.E.Johnson, L.N.Barford, D.

(2001) Mol.Cell 7: 615-626

  • Primary Citation of Related Structures:  1FPZ

  • PubMed Abstract: 
  • The CDK-interacting protein phosphatase KAP dephosphorylates phosphoThr-160 (pThr-160) of the CDK2 activation segment, the site of regulatory phosphorylation that is essential for kinase activity. Here we describe the crystal structure of KAP in asso ...

    The CDK-interacting protein phosphatase KAP dephosphorylates phosphoThr-160 (pThr-160) of the CDK2 activation segment, the site of regulatory phosphorylation that is essential for kinase activity. Here we describe the crystal structure of KAP in association with pThr-160-CDK2, representing an example of a protein phosphatase in complex with its intact protein substrate. The major protein interface between the two molecules is formed by the C-terminal lobe of CDK2 and the C-terminal helix of KAP, regions remote from the kinase-activation segment and the KAP catalytic site. The kinase-activation segment interacts with the catalytic site of KAP almost entirely via the phosphate group of pThr-160. This interaction requires that the activation segment is unfolded and drawn away from the kinase molecule, inducing a conformation of CDK2 similar to the activated state observed in the CDK2/cyclin A complex.


    Related Citations: 
    • Cdi1, a human G1 and S phase protein phosphatase that associates with Cdk2
      Gyruris, J.,Golemis, E.,Chertkov, H.,Brent, R.
      (1993) Cell 75: 791
    • Dephosphorylation of Cdk2 Thr160 by the cyclin dependent kinase-interacting phosphatase KAP in the absence of cyclin
      Poon, R.Y.C.,Hunter, T.
      (1995) Science 270: 90
    • The p21Cdk-interacting protein Cip1 is a potent inhibitor of G1 cyclin-dependent kinases
      Harper, J.W.,Adami, G.R.,Wei, N.,Keyomarsi, K.,Elledge, S.J.
      (1993) Cell 75: 805


    Organizational Affiliation

    Department of Biochemistry, University of Oxford, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CYCLIN-DEPENDENT KINASE INHIBITOR 3
A
212Homo sapiensGene Names: CDKN3 (CDI1, CIP2, KAP)
EC: 3.1.3.48, 3.1.3.16
Find proteins for Q16667 (Homo sapiens)
Go to Gene View: CDKN3
Go to UniProtKB:  Q16667
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
CELL DIVISION PROTEIN KINASE 2
B
298Homo sapiensGene Names: CDK2 (CDKN2)
EC: 2.7.11.22
Find proteins for P24941 (Homo sapiens)
Go to Gene View: CDK2
Go to UniProtKB:  P24941
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP

Download SDF File 
Download CCD File 
B
ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TPO
Query on TPO
B
L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.313 
  • R-Value Work: 0.235 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 134.450α = 90.00
b = 134.450β = 90.00
c = 65.800γ = 120.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
AMoREphasing
CCP4data scaling
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-05-09
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance