5ND7

Microtubule-bound MKLP2 motor domain in the presence of AMPPNP


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.9 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

The divergent mitotic kinesin MKLP2 exhibits atypical structure and mechanochemistry.

Atherton, J.Yu, I.M.Cook, A.Muretta, J.M.Joseph, A.Major, J.Sourigues, Y.Clause, J.Topf, M.Rosenfeld, S.S.Houdusse, A.Moores, C.A.

(2017) Elife 6: --

  • DOI: 10.7554/eLife.27793
  • Primary Citation of Related Structures:  5ND2, 5ND3, 5ND4

  • PubMed Abstract: 
  • MKLP2, a kinesin-6, has critical roles during the metaphase-anaphase transition and cytokinesis. Its motor domain contains conserved nucleotide binding motifs, but is divergent in sequence (~35% identity) and size (~40% larger) compared to other kine ...

    MKLP2, a kinesin-6, has critical roles during the metaphase-anaphase transition and cytokinesis. Its motor domain contains conserved nucleotide binding motifs, but is divergent in sequence (~35% identity) and size (~40% larger) compared to other kinesins. Using cryo-electron microscopy and biophysical assays, we have undertaken a mechanochemical dissection of the microtubule-bound MKLP2 motor domain during its ATPase cycle, and show that many facets of its mechanism are distinct from other kinesins. While the MKLP2 neck-linker is directed towards the microtubule plus-end in an ATP-like state, it does not fully dock along the motor domain. Furthermore, the footprint of the MKLP2 motor domain on the MT surface is altered compared to motile kinesins, and enhanced by kinesin-6-specific sequences. The conformation of the highly extended loop6 insertion characteristic of kinesin-6s is nucleotide-independent and does not contact the MT surface. Our results emphasize the role of family-specific insertions in modulating kinesin motor function.


    Organizational Affiliation

    Institute of Structural and Molecular Biology, Birkbeck College, London, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Kinesin-like protein KIF20A
C
501Mus musculusGene Names: Kif20a (Rab6kifl)
Find proteins for P97329 (Mus musculus)
Go to UniProtKB:  P97329
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Tubulin alpha chain
A
451Bos taurusN/A
Find proteins for P81947 (Bos taurus)
Go to UniProtKB:  P81947
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Tubulin beta-2B chain
B
445Bos taurusGene Names: TUBB2B
Find proteins for Q6B856 (Bos taurus)
Go to Gene View: TUBB2B
Go to UniProtKB:  Q6B856
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GDP
Query on GDP

Download SDF File 
Download CCD File 
B
GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N
 Ligand Interaction
GTP
Query on GTP

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Download CCD File 
A
GUANOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O14 P3
XKMLYUALXHKNFT-UUOKFMHZSA-N
 Ligand Interaction
ANP
Query on ANP

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Download CCD File 
C
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
C10 H17 N6 O12 P3
PVKSNHVPLWYQGJ-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

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Download CCD File 
A, C
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
TA1
Query on TA1

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Download CCD File 
B
TAXOL
C47 H51 N O14
RCINICONZNJXQF-MZXODVADSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.9 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationCountryGrant Number
Medical Research Council (United Kingdom)United KingdomMR/J000973/1
Medical Research Council (United Kingdom)United KingdomMR/J003867/1
Medical Research Council (United Kingdom)United KingdomMR/M019292/1
American Heart AssociationUnited StatesSDG20480032
National Institutes of HealthUnited StatesGM102875
National Institutes of HealthUnited StatesNS073610
CNRSANR-15-CE13-0017-01
Instruct-pilote, Ligue Contre le CancerRS14/75-28
ARCPJA 20151203285
INCa2016-1-PL BIO-10-ICR-1
Marie Curie FellowshipFP7-PEOPLE-2012-IIF
Labex CelTisPhyBio11-LBX-0038
PSL Research UniversityANR-10-IDEX-0001-02 PSL

Revision History 

  • Version 1.0: 2017-10-04
    Type: Initial release