1XJD

Crystal Structure of PKC-theta complexed with Staurosporine at 2A resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.201 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Catalytic domain crystal structure of protein kinase C-theta (PKCtheta)

Xu, Z.B.Chaudhary, D.Olland, S.Wolfrom, S.Czerwinski, R.Malakian, K.Lin, L.Stahl, M.L.Joseph-McCarthy, D.Benander, C.Fitz, L.Greco, R.Somers, W.S.Mosyak, L.

(2004) J.Biol.Chem. 279: 50401-50409

  • DOI: 10.1074/jbc.M409216200

  • PubMed Abstract: 
  • A member of the novel protein kinase C (PKC) subfamily, PKC, is an essential component of the T cell synapse and is required for optimal T cell activation and interleukin-2 production. Selective involvement of PKC in TCR signaling makes this enzyme a ...

    A member of the novel protein kinase C (PKC) subfamily, PKC, is an essential component of the T cell synapse and is required for optimal T cell activation and interleukin-2 production. Selective involvement of PKC in TCR signaling makes this enzyme an attractive therapeutic target in T cell-mediated disease processes. In this report we describe the crystal structure of the catalytic domain of PKC at 2.0-A resolution. Human recombinant PKC kinase domain was expressed in bacteria as catalytically active phosphorylated enzyme and co-crystallized with its subnanomolar, ATP site inhibitor staurosporine. The structure follows the classic bilobal kinase fold and shows the enzyme in its active conformation and phosphorylated state. Inhibitory interactions between conserved features of staurosporine and the ATP-binding cleft are accompanied by closing of the glycine-rich loop, which also maintains an inhibitory arrangement by blocking the phosphate recognition subsite. The two major phosphorylation sites, Thr-538 in the activation loop and Ser-695 in the hydrophobic motif, are both occupied in the structure, playing key roles in stabilizing active conformation of the enzyme and indicative of PKC autocatalytic phosphorylation and activation during bacterial expression. The PKC-staurosporine complex represents the first kinase domain crystal structure of any PKC isotypes to be determined and as such should provide valuable insight into PKC specificity and into rational drug design strategies for PKC selective leads.


    Organizational Affiliation

    Department of Chemical and Screening Sciences, Inflammation Department, Wyeth Research, Cambridge, Massachusetts 02140, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Protein kinase C, theta type
A
345Homo sapiensMutation(s): 0 
Gene Names: PRKCQ (PRKCT)
EC: 2.7.11.13
Find proteins for Q04759 (Homo sapiens)
Go to Gene View: PRKCQ
Go to UniProtKB:  Q04759
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
STU
Query on STU

Download SDF File 
Download CCD File 
A
STAUROSPORINE
C28 H26 N4 O3
HKSZLNNOFSGOKW-FYTWVXJKSA-N
 Ligand Interaction
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
A
L-PEPTIDE LINKINGC3 H8 N O6 PSER
TPO
Query on TPO
A
L-PEPTIDE LINKINGC4 H10 N O6 PTHR
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
STUKi: 0.33 nM BINDINGMOAD
STOKi: 0.33 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.201 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 139.566α = 90.00
b = 42.400β = 116.24
c = 67.678γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNSrefinement
HKL-2000data reduction
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2004-09-23 
  • Released Date: 2004-10-19 
  • Deposition Author(s): Xu, Z.B.

Revision History 

  • Version 1.0: 2004-10-19
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance