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 

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This is version 1.4 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: https://doi.org/10.1016/s1097-2765(01)00208-8
  • Primary Citation of Related Structures:  
    1FPZ, 1FQ1

  • 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 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.


  • Organizational Affiliation

    Department of Biochemistry, University of Oxford, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CYCLIN-DEPENDENT KINASE INHIBITOR 3212Homo sapiensMutation(s): 1 
EC: 3.1.3.48 (PDB Primary Data), 3.1.3.16 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q16667 (Homo sapiens)
Explore Q16667 
Go to UniProtKB:  Q16667
PHAROS:  Q16667
GTEx:  ENSG00000100526 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ16667
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
CELL DIVISION PROTEIN KINASE 2298Homo sapiensMutation(s): 0 
EC: 2.7.11.22
UniProt & NIH Common Fund Data Resources
Find proteins for P24941 (Homo sapiens)
Explore P24941 
Go to UniProtKB:  P24941
PHAROS:  P24941
GTEx:  ENSG00000123374 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP24941
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
TPO
Query on TPO
B
L-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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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • 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
  • Version 1.4: 2024-11-20
    Changes: Data collection, Database references, Derived calculations, Structure summary