5JVR

The neck-linker of Mus musculus KIF3A fused to the alpha 7 helix of Drosophila melanogaster Kinesin-1 fused to EB1

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 

wwPDB Validation   3D Report Full Report


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


Literature

Family-specific Kinesin Structures Reveal Neck-linker Length Based on Initiation of the Coiled-coil.

Phillips, R.K., Peter, L.G., Gilbert, S.P., Rayment, I.

(2016) J Biol Chem 291: 20372-20386

  • DOI: 10.1074/jbc.M116.737577
  • Primary Citation of Related Structures:  
    5JV3, 5JVR, 5JVS, 5JVU, 5JVM, 5JVP, 5JX1

  • PubMed Abstract: 

    • Kinesin-1, -2, -5, and -7 generate processive hand-over-hand 8-nm steps to transport intracellular cargoes toward the microtubule plus end. This processive motility requires gating mechanisms to coordinate the mechanochemical cycles of the two motor heads to sustain the processive run ...

    Kinesin-1, -2, -5, and -7 generate processive hand-over-hand 8-nm steps to transport intracellular cargoes toward the microtubule plus end. This processive motility requires gating mechanisms to coordinate the mechanochemical cycles of the two motor heads to sustain the processive run. A key structural element believed to regulate the degree of processivity is the neck-linker, a short peptide of 12-18 residues, which connects the motor domain to its coiled-coil stalk. Although a shorter neck-linker has been correlated with longer run lengths, the structural data to support this hypothesis have been lacking. To test this hypothesis, seven kinesin structures were determined by x-ray crystallography. Each included the neck-linker motif, followed by helix α7 that constitutes the start of the coiled-coil stalk. In the majority of the structures, the neck-linker length differed from predictions because helix α7, which initiates the coiled-coil, started earlier in the sequence than predicted. A further examination of structures in the Protein Data Bank reveals that there is a great disparity between the predicted and observed starting residues. This suggests that an accurate prediction of the start of a coiled-coil is currently difficult to achieve. These results are significant because they now exclude simple comparisons between members of the kinesin superfamily and add a further layer of complexity when interpreting the results of mutagenesis or protein fusion. They also re-emphasize the need to consider factors beyond the kinesin neck-linker motif when attempting to understand how inter-head communication is tuned to achieve the degree of processivity required for cellular function.

    Organizational Affiliation: 

    From the Department of Biochemistry, University of Wisconsin, Madison, Wisconsin 53706 and ivan_rayment@biochem.wisc.edu.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Chimera protein of mouse KIF3A,fruit fly Kinesin-1 and human EB1 A, B, C, D, E, F, G, H75Mus musculus, Drosophila melanogaster, Homo sapiens
This entity is chimeric		Mutation(s): 0 
Gene Names: Kif3a, Kif3, Khc, kin, CG7765, MAPRE1
Find proteins for P28741 (Mus musculus)
Explore P28741 
Go to UniProtKB:  P28741
Find proteins for P17210 (Drosophila melanogaster)
Explore P17210 
Go to UniProtKB:  P17210
Find proteins for Q15691 (Homo sapiens)
Explore Q15691 
Go to UniProtKB:  Q15691
NIH Common Fund Data Resources
PHAROS:  Q15691
GTEx:  ENSG00000101367
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.172α = 90
b = 80.189β = 90
c = 155.375γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-3000data reduction
HKL-3000data scaling
PHASERphasing

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-08-03
    Type: Initial release
  • Version 1.1: 2016-08-10
    Changes: Database references
  • Version 1.2: 2016-10-05
    Changes: Database references
  • Version 1.3: 2017-09-27
    Changes: Author supporting evidence, Database references, Derived calculations