4DC2

Structure of PKC in Complex with a Substrate Peptide from Par-3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.172 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Substrate recognition mechanism of atypical protein kinase Cs revealed by the structure of PKC iota in complex with a substrate peptide from Par-3

Wang, C.Shang, Y.Yu, J.Zhang, M.

(2012) Structure 20: 791-801

  • DOI: 10.1016/j.str.2012.02.022

  • PubMed Abstract: 
  • Protein kinase C (PKC) play critical roles in many cellular functions including differentiation, proliferation, growth, and survival. However, the molecular bases governing PKC's substrate recognitions remain poorly understood. Here we determined the ...

    Protein kinase C (PKC) play critical roles in many cellular functions including differentiation, proliferation, growth, and survival. However, the molecular bases governing PKC's substrate recognitions remain poorly understood. Here we determined the structure of PKCι in complex with a peptide from Par-3 at 2.4 Å. PKCι in the complex adopts catalytically competent, closed conformation without phosphorylation of Thr402 in the activation loop. The Par-3 peptide binds to an elongated groove formed by the N- and C-lobes of the kinase domain. The PKCι/Par-3 complex structure, together with extensive biochemical studies, reveals a set of substrate recognition sites common to all PKC isozymes as well as a hydrophobic pocket unique to aPKC. A consensus aPKC's substrate recognition sequence pattern can be readily identified based on the complex structure. Finally, we demonstrate that the pseudosubstrate sequence of PKCι resembles its substrate sequence, directly binds to and inhibits the activity of the kinase.


    Organizational Affiliation

    Division of Life Science, State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Protein kinase C iota type
A
396Mus musculusMutation(s): 0 
Gene Names: Prkci (Pkcl)
EC: 2.7.11.13
Find proteins for Q62074 (Mus musculus)
Go to UniProtKB:  Q62074
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Partitioning defective 3 homolog
Z
28Rattus norvegicusMutation(s): 0 
Gene Names: Pard3 (Par3)
Find proteins for Q9Z340 (Rattus norvegicus)
Go to UniProtKB:  Q9Z340
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADE
Query on ADE

Download SDF File 
Download CCD File 
A
ADENINE
C5 H5 N5
GFFGJBXGBJISGV-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TPO
Query on TPO
A
L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.172 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 101.456α = 90.00
b = 54.900β = 115.18
c = 82.489γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
PHENIXrefinement
HKL-2000data collection
PHASESphasing
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-07-11
    Type: Initial release