2CJM

Mechanism of CDK inhibition by active site phosphorylation: CDK2 Y15p T160p in complex with cyclin A structure


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.201 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

How Tyrosine 15 Phosphorylation Inhibits the Activity of Cyclin-Dependent Kinase 2-Cyclin A.

Welburn, J.P.I.Tucker, J.Johnson, T.Lindert, L.Morgan, M.Willis, A.Noble, M.E.M.Endicott, J.A.

(2007) J.Biol.Chem. 282: 3173

  • DOI: 10.1074/jbc.M609151200

  • PubMed Abstract: 
  • Inhibition of cyclin-dependent kinase 1 (CDK1) activity by Tyr-15 phosphorylation directly regulates entry into mitosis and is an important element in the control of the unperturbed cell cycle. Active site phosphorylation of other members of the CDK ...

    Inhibition of cyclin-dependent kinase 1 (CDK1) activity by Tyr-15 phosphorylation directly regulates entry into mitosis and is an important element in the control of the unperturbed cell cycle. Active site phosphorylation of other members of the CDK family that regulate cell cycle progression instates checkpoints that are fundamental to eukaryotic cell cycle regulation. Kinetic and crystallographic analyses of CDK2-cyclin A complexes reveal that this inhibitory mechanism operates through steric blockade of peptide substrate binding and through the creation of an environment that favors a non-productive conformation of the terminal group of ATP. By contrast, tyrosine phosphorylation of CDK2 alters neither its Km for ATP nor its significant intrinsic ATPase activity. Tyr-15-phosphorylated CDK2 retains trace protein phosphorylation activity that should be considered in quantitative and qualitative cell cycle models.


    Organizational Affiliation

    AstraZeneca Pharmaceuticals, Alderley Park, Macclesfield, Cheshire SK10 4TF, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CELL DIVISION PROTEIN KINASE 2
A, C
298Homo sapiensMutation(s): 0 
Gene Names: CDK2 (CDKN2)
EC: 2.7.11.22
Find proteins for P24941 (Homo sapiens)
Go to Gene View: CDK2
Go to UniProtKB:  P24941
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
CYCLIN A2
B, D
258Homo sapiensMutation(s): 0 
Gene Names: CCNA2 (CCN1, CCNA)
Find proteins for P20248 (Homo sapiens)
Go to Gene View: CCNA2
Go to UniProtKB:  P20248
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP

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

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
PTR
Query on PTR
A, C
L-PEPTIDE LINKINGC9 H12 N O6 PTYR
TPO
Query on TPO
A, C
L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.201 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 73.801α = 90.00
b = 133.202β = 90.00
c = 147.585γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALAdata scaling
MOLREPphasing
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-04-24
    Type: Initial release
  • Version 1.1: 2013-07-10
    Type: Atomic model, Database references, Derived calculations, Non-polymer description, Other, Source and taxonomy, Structure summary, Version format compliance