5HNX

Structural basis of backwards motion in kinesin-14: minus-end directed nKn664 in the nucleotide-free state

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.60 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

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This is version 1.3 of the entry. See complete history. 


Literature

Structural Basis of Backwards Motion in Kinesin-1-Kinesin-14 Chimera: Implication for Kinesin-14 Motility

Yamagishi, M., Shigematsu, H., Yokoyama, T., Kikkawa, M., Sugawa, M., Aoki, M., Shirouzu, M., Yajima, J., Nitta, R.

(2016) Structure 24: 1322-1334

  • DOI: 10.1016/j.str.2016.05.021
  • Primary Citation of Related Structures:  
    5HNX, 5HNW, 5HNZ, 5HNY

  • PubMed Abstract: 

    • Kinesin-14 is a unique minus-end-directed microtubule-based motor. A swinging motion of a class-specific N-terminal neck helix has been proposed to produce minus-end directionality. However, it is unclear how swinging of the neck helix is driven by ATP h ...

    Kinesin-14 is a unique minus-end-directed microtubule-based motor. A swinging motion of a class-specific N-terminal neck helix has been proposed to produce minus-end directionality. However, it is unclear how swinging of the neck helix is driven by ATP hydrolysis utilizing the highly conserved catalytic core among all kinesins. Here, using a motility assay, we show that in addition to the neck helix, the conserved five residues at the C-terminal region in kinesin-14, namely the neck mimic, are necessary to give kinesin-1 an ability to reverse its directionality toward the minus end of microtubules. Our structural analyses further demonstrate that the C-terminal neck mimic, in cooperation with conformational changes in the catalytic core during ATP binding, forms a kinesin-14 bundle with the N-terminal neck helix to swing toward the minus end of microtubules. Thus, the neck mimic plays a crucial role in coupling the chemical ATPase reaction with the mechanical cycle to produce the minus-end-directed motility of kinesin-14.

    Organizational Affiliation: 

    RIKEN Center for Life Science Technologies, Tsurumi-ku, Yokohama 230-0045, Japan. Electronic address: ryo.nitta@riken.jp.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tubulin alpha-1B chain A451Bos taurusMutation(s): 0 
Find proteins for P81947 (Bos taurus)
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Tubulin beta-2B chain B445Bos taurusMutation(s): 0 
Gene Names: TUBB2B
Find proteins for Q6B856 (Bos taurus)
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Go to UniProtKB:  Q6B856
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Protein claret segregational,kinesin-1/kinesin-14,Protein claret segregational K371Drosophila melanogaster, Rattus norvegicusMutation(s): 0 
Gene Names: ncd, Kif5c
Find proteins for P20480 (Drosophila melanogaster)
Explore P20480 
Go to UniProtKB:  P20480
Find proteins for G3V6L4 (Rattus norvegicus)
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Go to UniProtKB:  G3V6L4
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
TA1
Query on TA1
Download Ideal Coordinates CCD File 
B
TAXOL
C47 H51 N O14
RCINICONZNJXQF-MZXODVADSA-N		 Ligand Interaction
GTP
Query on GTP
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A
GUANOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O14 P3
XKMLYUALXHKNFT-UUOKFMHZSA-N		 Ligand Interaction
GDP
Query on GDP
Download Ideal Coordinates CCD File 
B
GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N		 Ligand Interaction
MG
Query on MG
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A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.60 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-08-10
    Type: Initial release
  • Version 1.1: 2016-08-17
    Changes: Database references
  • Version 1.2: 2016-09-07
    Changes: Other
  • Version 1.3: 2016-11-02
    Changes: Other