4UBF

HsMCAK motor domain complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 
    0.286 (Depositor), 0.290 (DCC) 
  • R-Value Work: 
    0.264 (Depositor), 0.270 (DCC) 
  • R-Value Observed: 
    0.265 (Depositor) 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted ADPClick on this verticalbar to view details

This is version 1.3 of the entry. See complete history


Literature

The C-terminal region of the motor protein MCAK controls its structure and activity through a conformational switch.

Talapatra, S.K.Harker, B.Welburn, J.P.

(2015) Elife 4

  • DOI: https://doi.org/10.7554/eLife.06421
  • Primary Citation of Related Structures:  
    4UBF

  • PubMed Abstract: 

    The precise regulation of microtubule dynamics is essential during cell division. The kinesin-13 motor protein MCAK is a potent microtubule depolymerase. The divergent non-motor regions flanking the ATPase domain are critical in regulating its targeting and activity. However, the molecular basis for the function of the non-motor regions within the context of full-length MCAK is unknown. Here, we determine the structure of MCAK motor domain bound to its regulatory C-terminus. Our analysis reveals that the MCAK C-terminus binds to two motor domains in solution and is displaced allosterically upon microtubule binding, which allows its robust accumulation at microtubule ends. These results demonstrate that MCAK undergoes long-range conformational changes involving its C-terminus during the soluble to microtubule-bound transition and that the C-terminus-motor interaction represents a structural intermediate in the MCAK catalytic cycle. Together, our work reveals intrinsic molecular mechanisms underlying the regulation of kinesin-13 activity.


  • Organizational Affiliation

    Wellcome Trust Centre for Cell Biology, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Kinesin-like protein KIF2C
A, B, C, D
387Homo sapiensMutation(s): 0 
Gene Names: KIF2CKNSL6
UniProt & NIH Common Fund Data Resources
Find proteins for Q99661 (Homo sapiens)
Explore Q99661 
Go to UniProtKB:  Q99661
PHAROS:  Q99661
GTEx:  ENSG00000142945 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ99661
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Kinesin-like protein KIF2CE [auth P]12Homo sapiensMutation(s): 0 
Gene Names: KIF2CKNSL6
UniProt & NIH Common Fund Data Resources
Find proteins for Q99661 (Homo sapiens)
Explore Q99661 
Go to UniProtKB:  Q99661
PHAROS:  Q99661
GTEx:  ENSG00000142945 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ99661
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download Ideal Coordinates CCD File 
G [auth A],
I [auth B],
M [auth C],
P [auth D]
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
MG
Query on MG

Download Ideal Coordinates CCD File 
F [auth A]
H [auth A]
J [auth B]
K [auth B]
L [auth C]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free:  0.286 (Depositor), 0.290 (DCC) 
  • R-Value Work:  0.264 (Depositor), 0.270 (DCC) 
  • R-Value Observed: 0.265 (Depositor) 
Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 46.306α = 90
b = 245.644β = 95.84
c = 79.399γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted ADPClick on this verticalbar to view details

Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Cancer Research UKUnited Kingdom543WJW_R42094

Revision History  (Full details and data files)

  • Version 1.0: 2015-05-06
    Type: Initial release
  • Version 1.1: 2017-08-30
    Changes: Author supporting evidence
  • Version 1.2: 2018-06-06
    Changes: Data collection, Database references
  • Version 1.3: 2023-12-20
    Changes: Data collection, Database references, Derived calculations, Refinement description