Crystal structure of polo-like kinase(PLK1)PBD in complex with phospho peptide

Experimental Data Snapshot

  • Resolution: 1.69 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.203 

wwPDB Validation   3D Report Full Report

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The condensin component NCAPG2 regulates microtubule-kinetochore attachment through recruitment of Polo-like kinase 1 to kinetochores.

Kim, J.H.Shim, J.Ji, M.J.Jung, Y.Bong, S.M.Jang, Y.J.Yoon, E.K.Lee, S.J.Kim, K.G.Kim, Y.H.Lee, C.Lee, B.I.Kim, K.T.

(2014) Nat Commun 5: 4588-4588

  • DOI: https://doi.org/10.1038/ncomms5588
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The early event of microtubule-kinetochore attachment is a critical stage for precise chromosome segregation. Here we report that NCAPG2, which is a component of the condensin II complex, mediates chromosome segregation through microtubule-kinetochore attachment by recruiting PLK1 to prometaphase kinetochores. NCAPG2 colocalizes with PLK1 at prometaphase kinetochores and directly interacts with the polo-box domain (PBD) of PLK1 via its highly conserved C-terminal region. In both humans and Caenorhabditis elegans, when NCAPG2 is depleted, the attachment of the spindle to the kinetochore is loosened and misoriented. This is caused by the disruption of PLK1 localization to the kinetochore and by the decreased phosphorylation of its kinetochore substrate, BubR1. In addition, the crystal structure of the PBD of PLK1, in complex with the C-terminal region of NCAPG2, (1007)VLS-pT-L(1011), exhibits structural conservation of PBD-phosphopeptides, suggesting that the regulation of NCAPG2 function is phosphorylation-dependent. These findings suggest that NCAPG2 plays an important role in regulating proper chromosome segregation through a functional interaction with PLK1 during mitosis.

  • Organizational Affiliation

    1] Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea [2].

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Serine/threonine-protein kinase PLK1222Homo sapiensMutation(s): 0 
Gene Names: PLK1PLK
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
  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
phospho peptide VAL-LEU-SER-TPO-LEU-NH26Homo sapiensMutation(s): 0 
Sequence Annotations
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
Query on TPO
Experimental Data & Validation

Experimental Data

  • Resolution: 1.69 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.203 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 35.649α = 90
b = 51.858β = 100.69
c = 57.654γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-08-13
    Type: Initial release
  • Version 1.1: 2014-11-26
    Changes: Other
  • Version 1.2: 2019-12-18
    Changes: Advisory, Database references, Derived calculations