2OJX

Molecular and structural basis of polo-like kinase 1 substrate recognition: Implications in centrosomal localization


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.230 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Molecular and structural basis of polo-like kinase 1 substrate recognition: Implications in centrosomal localization.

Garcia-Alvarez, B.de Carcer, G.Ibanez, S.Bragado-Nilsson, E.Montoya, G.

(2007) Proc.Natl.Acad.Sci.Usa 104: 3107-3112

  • DOI: 10.1073/pnas.0609131104
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Polo-like kinase (Plk1) is crucial for cell cycle progression through mitosis. Here we present the molecular and structural mechanisms that regulate the substrate recognition of Plk1 and influence its centrosomal localization and activity. Our work s ...

    Polo-like kinase (Plk1) is crucial for cell cycle progression through mitosis. Here we present the molecular and structural mechanisms that regulate the substrate recognition of Plk1 and influence its centrosomal localization and activity. Our work shows that Plk1 localization is controlled not only by the polo box domain (PBD); remarkably, the kinase domain is also involved in Plk1 targeting mechanism to the centrosome. The crystal structures of the PBD in complex with Cdc25C and Cdc25C-P target peptides reveal that Trp-414 is fundamental in their recognition regardless of its phosphorylation status. Binding measurements demonstrate that W414F mutation abolishes molecular recognition and diminishes centrosomal localization. Therefore, Plk1 centrosomal localization is not controlled by His-538 and Lys-540, the residues involved in phosphorylated target binding. The different conformations of the loop, which connects the polo boxes in the apo and the PBD-Cdc25C and PBD-Cdc25C-P complex structures, together with changes in the proline adjacent to the phosphothreonine in the target peptide, suggest a regulatory mechanism to detect binding of unphosphorylated or phosphorylated target substrates. Altogether, these data propose a model for the interaction between Plk1 and Cdc25C.


    Organizational Affiliation

    Structural Biology and Biocomputing Programme, Macromolecular Crystallography Group, Molecular Oncology Programme, Cell Division and Cancer Group, Spanish National Cancer Center (CNIO), 28029 Madrid, Spain.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein kinase PLK1
A
239Homo sapiensMutation(s): 0 
Gene Names: PLK1 (PLK)
EC: 2.7.11.21
Find proteins for P53350 (Homo sapiens)
Go to Gene View: PLK1
Go to UniProtKB:  P53350
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Synthetic peptide
E
9Homo sapiensMutation(s): 0 
Gene Names: CDC25C
EC: 3.1.3.48
Find proteins for P30307 (Homo sapiens)
Go to Gene View: CDC25C
Go to UniProtKB:  P30307
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.230 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 40.186α = 90.00
b = 49.178β = 109.48
c = 56.234γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
CCP4data scaling
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-02-13
    Type: Initial release
  • Version 1.1: 2007-10-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance