8S31 | pdb_00008s31

Crystal structure of human PLK1 Polo-Box Domain in complex with Mis18BP1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.13 Å
  • R-Value Free: 
    0.224 (Depositor), 0.220 (DCC) 
  • R-Value Work: 
    0.195 (Depositor), 0.190 (DCC) 
  • R-Value Observed: 
    0.197 (Depositor) 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

PLK1-mediated phosphorylation cascade activates Mis18 complex to ensure centromere inheritance.

Parashara, P.Medina-Pritchard, B.Abad, M.A.Sotelo-Parrilla, P.Thamkachy, R.Grundei, D.Zou, J.Spanos, C.Kumar, C.N.Basquin, C.Das, V.Yan, Z.Al-Murtadha, A.A.Kelly, D.A.McHugh, T.Imhof, A.Rappsilber, J.Jeyaprakash, A.A.

(2024) Science 385: 1098-1104

  • DOI: https://doi.org/10.1126/science.ado8270
  • Primary Citation of Related Structures:  
    8S30, 8S31

  • PubMed Abstract: 

    Accurate chromosome segregation requires the attachment of microtubules to centromeres, epigenetically defined by the enrichment of CENP-A nucleosomes. During DNA replication, CENP-A nucleosomes undergo dilution. To preserve centromere identity, correct amounts of CENP-A must be restored in a cell cycle-controlled manner orchestrated by the Mis18 complex (Mis18α-Mis18β-Mis18BP1). We demonstrate here that PLK1 interacts with the Mis18 complex by recognizing self-primed phosphorylations of Mis18α (Ser 54 ) and Mis18BP1 (Thr 78 and Ser 93 ) through its Polo-box domain. Disrupting these phosphorylations perturbed both centromere recruitment of the CENP-A chaperone HJURP and new CENP-A loading. Biochemical and functional analyses showed that phosphorylation of Mis18α and PLK1 binding were required to activate Mis18α-Mis18β and promote Mis18 complex-HJURP interaction. Thus, our study reveals key molecular events underpinning the licensing role of PLK1 in ensuring accurate centromere inheritance.


  • Organizational Affiliation
    • Wellcome Centre for Cell Biology, University of Edinburgh, Edinburgh EH9 3BF, UK.

Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Serine/threonine-protein kinase PLK1
A, B
242Homo sapiensMutation(s): 0 
Gene Names: PLK1PLK
EC: 2.7.11.21
UniProt & NIH Common Fund Data Resources
Find proteins for P53350 (Homo sapiens)
Explore P53350 
Go to UniProtKB:  P53350
PHAROS:  P53350
GTEx:  ENSG00000166851 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP53350
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Mis18-binding protein 1
C, D
11Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q6P0N0 (Homo sapiens)
Explore Q6P0N0 
Go to UniProtKB:  Q6P0N0
PHAROS:  Q6P0N0
GTEx:  ENSG00000129534 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6P0N0
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
TPO
Query on TPO
C, D
L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.13 Å
  • R-Value Free:  0.224 (Depositor), 0.220 (DCC) 
  • R-Value Work:  0.195 (Depositor), 0.190 (DCC) 
  • R-Value Observed: 0.197 (Depositor) 
Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 67.147α = 90
b = 67.147β = 90
c = 254.536γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
xia2data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Medical Research Council (MRC, United Kingdom)United KingdomMR/X001245/1

Revision History  (Full details and data files)

  • Version 1.0: 2024-08-21
    Type: Initial release
  • Version 1.1: 2024-09-18
    Changes: Database references
  • Version 1.2: 2024-11-20
    Changes: Structure summary