4YYP

Crystal structure of human PLK4-PB3 in complex with STIL-CC


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.217 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

STIL binding to Polo-box 3 of PLK4 regulates centriole duplication.

Arquint, C.Gabryjonczyk, A.M.Imseng, S.Bohm, R.Sauer, E.Hiller, S.Nigg, E.A.Maier, T.

(2015) Elife 4: --

  • DOI: 10.7554/eLife.07888
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Polo-like kinases (PLK) are eukaryotic regulators of cell cycle progression, mitosis and cytokinesis; PLK4 is a master regulator of centriole duplication. Here, we demonstrate that the SCL/TAL1 interrupting locus (STIL) protein interacts via its coil ...

    Polo-like kinases (PLK) are eukaryotic regulators of cell cycle progression, mitosis and cytokinesis; PLK4 is a master regulator of centriole duplication. Here, we demonstrate that the SCL/TAL1 interrupting locus (STIL) protein interacts via its coiled-coil region (STIL-CC) with PLK4 in vivo. STIL-CC is the first identified interaction partner of Polo-box 3 (PB3) of PLK4 and also uses a secondary interaction site in the PLK4 L1 region. Structure determination of free PLK4-PB3 and its STIL-CC complex via NMR and crystallography reveals a novel mode of Polo-box-peptide interaction mimicking coiled-coil formation. In vivo analysis of structure-guided STIL mutants reveals distinct binding modes to PLK4-PB3 and L1, as well as interplay of STIL oligomerization with PLK4 binding. We suggest that the STIL-CC/PLK4 interaction mediates PLK4 activation as well as stabilization of centriolar PLK4 and plays a key role in centriole duplication.


    Organizational Affiliation

    Biozentrum, University of Basel, Basel, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein kinase PLK4
A
87Homo sapiensMutation(s): 0 
Gene Names: PLK4 (SAK, STK18)
EC: 2.7.11.21
Find proteins for O00444 (Homo sapiens)
Go to Gene View: PLK4
Go to UniProtKB:  O00444
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
SCL-interrupting locus protein
B
32Homo sapiensMutation(s): 0 
Gene Names: STIL (SIL)
Find proteins for Q15468 (Homo sapiens)
Go to Gene View: STIL
Go to UniProtKB:  Q15468
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.217 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 86.570α = 90.00
b = 136.330β = 90.00
c = 33.440γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
BUSTERrefinement
XDSdata reduction
Cootmodel building
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-07-29
    Type: Initial release