6GY2

Crystal structure of human Plk1-PBD in complex with WSSSLATPPTLSSpTVLI phosphopeptide from BRCA2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.11 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.189 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Proper chromosome alignment depends on BRCA2 phosphorylation by PLK1.

Ehlen, A.Martin, C.Miron, S.Julien, M.Theillet, F.X.Ropars, V.Sessa, G.Beaurepere, R.Boucherit, V.Duchambon, P.El Marjou, A.Zinn-Justin, S.Carreira, A.

(2020) Nat Commun 11: 1819-1819

  • DOI: 10.1038/s41467-020-15689-9
  • Primary Citation of Related Structures:  
    6GY2

  • PubMed Abstract: 
  • The BRCA2 tumor suppressor protein is involved in the maintenance of genome integrity through its role in homologous recombination. In mitosis, BRCA2 is phosphorylated by Polo-like kinase 1 (PLK1). Here we describe how this phosphorylation contribute ...

    The BRCA2 tumor suppressor protein is involved in the maintenance of genome integrity through its role in homologous recombination. In mitosis, BRCA2 is phosphorylated by Polo-like kinase 1 (PLK1). Here we describe how this phosphorylation contributes to the control of mitosis. We identify a conserved phosphorylation site at T207 of BRCA2 that constitutes a bona fide docking site for PLK1 and is phosphorylated in mitotic cells. We show that BRCA2 bound to PLK1 forms a complex with the phosphatase PP2A and phosphorylated-BUBR1. Reducing BRCA2 binding to PLK1, as observed in BRCA2 breast cancer variants S206C and T207A, alters the tetrameric complex resulting in unstable kinetochore-microtubule interactions, misaligned chromosomes, faulty chromosome segregation and aneuploidy. We thus reveal a role of BRCA2 in the alignment of chromosomes, distinct from its DNA repair function, with important consequences on chromosome stability. These findings may explain in part the aneuploidy observed in BRCA2-mutated tumors.


    Organizational Affiliation

    Paris Sud University, Paris-Saclay University CNRS, UMR3348, F-91405, Orsay, France. aura.carreira@curie.fr.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Serine/threonine-protein kinase PLK1AB245Homo sapiensMutation(s): 0 
Gene Names: PLK1PLK
EC: 2.7.11.21
Find proteins for P53350 (Homo sapiens)
Explore P53350 
Go to UniProtKB:  P53350
NIH Common Fund Data Resources
PHAROS  P53350
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Phosphopeptide of BRCA2CD17Homo sapiensMutation(s): 0 
Gene Names: BRCA2FACDFANCD1
Find proteins for P51587 (Homo sapiens)
Explore P51587 
Go to UniProtKB:  P51587
NIH Common Fund Data Resources
PHAROS  P51587
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TPO
Query on TPO
C,DL-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.11 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.189 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50α = 80.79
b = 56.04β = 79.23
c = 61.03γ = 65.05
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction
XSCALEdata scaling
PDB_EXTRACTdata extraction
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Cancer InstituteFranceINCa-DGOS_8706

Revision History 

  • Version 1.0: 2019-07-10
    Type: Initial release
  • Version 1.1: 2020-04-22
    Changes: Database references