1FQ1

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.313 
  • R-Value Work: 0.235 

wwPDB Validation 3D Report Full Report


This is version 1.3 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

  • DOI: 10.1016/s1097-2765(01)00208-8
  • Primary Citation of Related Structures:  
    1FQ1, 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: 
    • 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
    • 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
    • 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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CYCLIN-DEPENDENT KINASE INHIBITOR 3A212Homo sapiensMutation(s): 1 
Gene Names: CDKN3CDI1CIP2KAP
EC: 3.1.3.48 (PDB Primary Data), 3.1.3.16 (UniProt)
Find proteins for Q16667 (Homo sapiens)
Explore Q16667 
Go to UniProtKB:  Q16667
NIH Common Fund Data Resources
PHAROS  Q16667
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
CELL DIVISION PROTEIN KINASE 2B298Homo sapiensMutation(s): 0 
Gene Names: CDK2CDKN2
EC: 2.7.11.22
Find proteins for P24941 (Homo sapiens)
Explore P24941 
Go to UniProtKB:  P24941
NIH Common Fund Data Resources
PHAROS  P24941
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP

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

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.313 
  • R-Value Work: 0.235 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 134.45α = 90
b = 134.45β = 90
c = 65.8γ = 120
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement
MOSFLMdata reduction
CCP4data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-05-09
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-03-14
    Changes: Database references