Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 49.04 kDa 
• Atom Count: 2748 
• Modelled Residue Count: 345 
• Deposited Residue Count: 424 
• Unique protein chains: 2

4DC2

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

• PDB DOI: 10.2210/pdb4DC2/pdb

• Classification: TRANSFERASE/TRANSFERASE SUBSTRATE
• Organism(s): Mus musculus, Rattus norvegicus
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2012-01-17 Released: 2012-07-11 
• Deposition Author(s): Shang, Y., Wang, C., Yu, J., Zhang, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Free: 0.241 
• R-Value Work: 0.172 
• R-Value Observed: 0.176 

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

• PubMed: 22579248 
• DOI: 10.1016/j.str.2012.02.022
• Primary Citation of Related Structures:  
  4DC2


• 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 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.

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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

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Protein kinase C iota type	A	396	Mus musculus	Mutation(s): 0  Gene Names: Pkcl, Prkci EC: 2.7.11.13
UniProt
Find proteins for Q62074 (Mus musculus) Explore Q62074  Go to UniProtKB:  Q62074

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Partitioning defective 3 homolog	B [auth Z]	28	Rattus norvegicus	Mutation(s): 0  Gene Names: Pard3, Par3
UniProt
Find proteins for Q9Z340 (Rattus norvegicus) Explore Q9Z340  Go to UniProtKB:  Q9Z340

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ADE	C [auth A]	ADENINE C5 H5 N5 GFFGJBXGBJISGV-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
TPO	A	L-PEPTIDE LINKING	C4 H10 N O6 P		THR

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Free: 0.241 
• R-Value Work: 0.172 
• R-Value Observed: 0.176 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 101.456	α = 90
b = 54.9	β = 115.18
c = 82.489	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
PHASES	phasing
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2012-01-17 
• Released Date: 2012-07-11 
Deposition Author(s): Shang, Y., Wang, C., Yu, J., Zhang, M.

Revision History  

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