4UXP

Conserved mechanisms of microtubule-stimulated ADP release, ATP binding, and force generation in transport kinesins


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.3 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Conserved Mechanisms of Microtubule-Stimulated Adp Release, ATP Binding, and Force Generation in Transport Kinesins.

Atherton, J.Farabella, I.Yu, I.Rosenfeld, S.S.Houdusse, A.Topf, M.Moores, C.A.

(2014) Elife 3: 3680

  • DOI: 10.7554/eLife.03680
  • Primary Citation of Related Structures:  4UXO, 4UXR, 4UXS, 4UXT, 4UXY, 4UY0

  • PubMed Abstract: 
  • Kinesins are a superfamily of microtubule-based ATP-powered motors, important for multiple, essential cellular functions. How microtubule binding stimulates their ATPase and controls force generation is not understood. To address this fundamental que ...

    Kinesins are a superfamily of microtubule-based ATP-powered motors, important for multiple, essential cellular functions. How microtubule binding stimulates their ATPase and controls force generation is not understood. To address this fundamental question, we visualized microtubule-bound kinesin-1 and kinesin-3 motor domains at multiple steps in their ATPase cycles--including their nucleotide-free states--at ∼ 7 Å resolution using cryo-electron microscopy. In both motors, microtubule binding promotes ordered conformations of conserved loops that stimulate ADP release, enhance microtubule affinity and prime the catalytic site for ATP binding. ATP binding causes only small shifts of these nucleotide-coordinating loops but induces large conformational changes elsewhere that allow force generation and neck linker docking towards the microtubule plus end. Family-specific differences across the kinesin-microtubule interface account for the distinctive properties of each motor. Our data thus provide evidence for a conserved ATP-driven mechanism for kinesins and reveal the critical mechanistic contribution of the microtubule interface.


    Organizational Affiliation

    Institute of Structural and Molecular Biology, Department of Biological Sciences, Birkbeck College, University of London, London, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TUBULIN ALPHA-1B CHAIN
A
451Bos taurusN/A
Find proteins for P81947 (Bos taurus)
Go to UniProtKB:  P81947
Entity ID: 2
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
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
KINESIN-3 MOTOR DOMAIN
C
375Homo sapiensGene Names: KIF1A (ATSV, C2orf20)
Find proteins for Q12756 (Homo sapiens)
Go to Gene View: KIF1A
Go to UniProtKB:  Q12756
Small Molecules
Ligands 6 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GDP
Query on GDP

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

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A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-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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A, C
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
TA1
Query on TA1

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

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.3 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-09-24
    Type: Initial release
  • Version 1.1: 2014-10-22
    Type: Database references
  • Version 1.2: 2017-08-23
    Type: Data collection, Refinement description