Structure of MKLP2 coiled coil

Experimental Data Snapshot

  • Resolution: 1.43 Å
  • R-Value Free: 0.320 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.224 

wwPDB Validation   3D Report Full Report

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Molecular basis of MKLP2-dependent Aurora B transport from chromatin to the anaphase central spindle.

Serena, M.Bastos, R.N.Elliott, P.R.Barr, F.A.

(2020) J Cell Biol 219

  • DOI: https://doi.org/10.1083/jcb.201910059
  • Primary Citation of Related Structures:  
    6YIE, 6YIF, 6YIH, 6YIP

  • PubMed Abstract: 

    The Aurora B chromosomal passenger complex (CPC) is a conserved regulator of mitosis. Its functions require localization first to the chromosome arms and then centromeres in mitosis and subsequently the central spindle in anaphase. Here, we analyze the requirements for core CPC subunits, survivin and INCENP, and the mitotic kinesin-like protein 2 (MKLP2) in targeting to these distinct localizations. Centromere recruitment of the CPC requires interaction of survivin with histone H3 phosphorylated at threonine 3, and we provide a complete structure of this assembly. Furthermore, we show that the INCENP RRKKRR-motif is required for both centromeric localization of the CPC in metaphase and MKLP2-dependent transport in anaphase. MKLP2 and DNA bind competitively to this motif, and INCENP T59 phosphorylation acts as a switch preventing MKLP2 binding in metaphase. In anaphase, CPC binding promotes the microtubule-dependent ATPase activity of MKLP2. These results explain how centromere targeting of the CPC in mitosis is coupled to its movement to the central spindle in anaphase.

  • Organizational Affiliation

    Department of Biochemistry, University of Oxford, Oxford, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Kinesin-like protein KIF20A
A, B
75Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for O95235 (Homo sapiens)
Explore O95235 
Go to UniProtKB:  O95235
PHAROS:  O95235
GTEx:  ENSG00000112984 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO95235
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on IPA

Download Ideal Coordinates CCD File 
C3 H8 O
Experimental Data & Validation

Experimental Data

  • Resolution: 1.43 Å
  • R-Value Free: 0.320 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.224 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 30.24α = 90
b = 32.925β = 90
c = 159.735γ = 90
Software Package:
Software NamePurpose
autoPROCdata processing
autoPROCdata scaling

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Cancer Research UKUnited KingdomC20079/A15940

Revision History  (Full details and data files)

  • Version 1.0: 2020-05-13
    Type: Initial release
  • Version 1.1: 2024-01-24
    Changes: Data collection, Database references, Refinement description